Tag: 100-200

Recognition of fake paintings of the 20th-century Russian avant-garde using the physicochemical analysis of zinc white was written by Sirro, Sergey;Ershova, Ksenia;Kochemirovsky, Vladimir;Fiks, Julia;Kondrakhina, Polina;Ermakov, Sergey;Mokhorov, Dmitriy;Kochemirovskaia, Svetlana. And the article was included in Forensic Chemistry in 2021.Safety of Octyl acetate The following contents are mentioned in the article:

The paper describes the results of using Raman spectroscopy to study the canvases of Russian avant-garde artists. The study aimed to identify stable signs of paints for the recognition of counterfeits. The subject of the research was zinc white as a component of paints used by the 20th-century Russian avant-garde. Temporal changes occurring with them are due to chem. reactions of organic paint components with whites and with each other. The study shows that Raman spectroscopy is the most sensitive method for detecting ZnO time markers. Its results are compared with the results of pyrolysis-gas chromatog., mass spectrometry, and X-ray anal. of paints from paintings from the Russian avant-garde of the early, middle, and late twentieth century. The study results demonstrate that the paint compositions of the early and late 20th Century have significant similarities. The result of their aging is the appearance of products of thermal desorption and pyrolysis in the form of a homologous series of alcs. and aromatic hydrocarbons formed during the destruction and oxidation of oleic, linoleic, linolenic, palmitic, stearic acids, and/or azelaic acid. These acids are found in flaxseed oil. Zinc white of the early 20th century contains significant additions of gypsum. The composition of the components of mid-century paints is much less diverse. Genuine paintings contain homologous series of fatty acids sorbed on zinc oxide. The paper analyzes historical reasons for this phenomenon. The research shows that one of the stable signs of falsification is the use of titanium white and organic catalysis products based on them. The results of gas chromatog. and mass spectrometry and Raman spectroscopy are supplemented by X-ray phase and X-ray fluorescence anal. The paper provides detailed reference data on the spectra of Raman light scattering, thermal desorption, and pyrolysis of paints of the studied canvases and shows the differences in the mass spectra of genuine paintings and falsifications. This study involved multiple reactions and reactants, such as Octyl acetate (cas: 112-14-1Safety of Octyl acetate).

Octyl acetate (cas: 112-14-1) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Safety of Octyl acetate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Characterization and comparison of UK, Irish, and French cold pressed rapeseed oils with refined rapeseed oils and extra virgin olive oils was written by McDowell, Daniel;Elliott, Christopher T.;Koidis, Anastasios. And the article was included in European Journal of Lipid Science and Technology in 2017.Computed Properties of C4H7NS The following contents are mentioned in the article:

Various chem. parameters were used to characterize a wide range of cold pressed rapeseed oils and to contrast the findings with refined rapeseed and extra virgin olive oil. There were significant differences between cold pressed rapeseed oils regarding almost all measured parameters. Volatile composition anal. showed that hexanal, 3-Me pentane and 1-butene, 4-isothiocyanato were the most abundant compounds There was no correlation between volatile compounds and geog. region of cold pressed rapeseed oils. French cold pressed rapeseed oils were found in exhibit significantly higher antioxidant activity levels than cold pressed rapeseed oils from other regions. Refined rapeseed oil was found to have a higher antioxidant activity but have significantly lower levels of phenolic acids (0.008 mg/kg oil) than cold pressed rapeseed oil (0.46 mg/kg oil). These phenolic acids appear to be important for oxidative stability as cold pressed rapeseed oil was more stable under heat stress than refined rapeseed oil. Olive oil was the most stable under heat stress, largely due to its comparatively high saturated fat content. Antioxidant potential, phenolic acids and peroxide values were found to be the main factors differentiating cold pressed rapeseed oil from refined rapeseed oil. Practical applications: Cold pressed rapeseed oil is a relatively new oil to the market and this study is the first to examine oils available to the British, Irish and French consumers. It shows the compositional variation of oils on the market by analyzing many parameters important for oil quality and consumer palatability. Antioxidant behavior and phenolic acid identification indicate potential health benefiting properties. This research also compares cold pressed rapeseed oils with market competitors which allows for clear comparison of these widely used edible oils. Cold pressed rapeseed oil is made by mech. crushing rapeseeds at a low temperature, followed by filtering and bottling the oil. This work investigates the chem. composition of cold pressed rapeseed oil, along with its antioxidant capacity and stability under heat stress. Cold pressed rapeseed oil is also compared to market competitors; refined rapeseed oil and extra virgin olive oil. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Computed Properties of C4H7NS).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Computed Properties of C4H7NS

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

In vitro anti-cancerous activity of 2-tridecanone extracted from Ruta chalepensis was written by Sathish, Vellaian;Kowsalya, Shanmugam;Umavathi, Subramaniam. And the article was included in Research Journal of Biotechnology in 2022.Recommanded Product: Octyl acetate The following contents are mentioned in the article:

Plants are rich source of therapeutic compounds that have tremendous applications in pharmaceutical industry. In recent years, cancer is a serious concern and large number of patients die due to cancer illnesses in spite of several interventions available. Development of effective and side effects lacking anticancer therapy is the trending research direction in healthcare pharmacy. The current investigation was carried out to confirm the outcomes of the methanolic extract of Ruta chalepensis leaves (Rutaceae) which inhibit the breast carcinoma cancer cell lines. R. chalepensis extract was carried out for the anti-cancerous activity for MCF-7 cells after treatment with various concentrations (0.1-1 mg/mL) of R. chalepensis extract for 48 h. The IC50 value of R. chalepensis extract on MCF-7 cells was determined by MTT assay as 493 卤 15.2 and 696.6 卤 11.5渭g/mL, resp. The morphol. changes that occurred in apoptotic cell were also perceived through Acridine Orange/ Ethidium Bromide (AO/EB) staining and this helped in deducing that the cell death observed was not due to necrosis, but due to apoptosis. The methanolic extract of R. chalepensis and 2-Tridecanone used at concentration of 0.5 mg/mL decreased the percentage of viable cells in MCF-7 cells; the percentage of apoptotic cells has increased to 42.46 and 46.68% for MCF -7 cells resp. compared to untreated cells. However, treatment of R. chalepensis and 2-Tridecanone significantly increased apoptosis as compared with control cells. The thin layer chromatog. (TLC) anal. used different concentrations of methanol and chloroform in 1:4 rations. Using the Rf formula, the present investigation on R. chalepensis was carried out and different compounds were identified such as alkaloids, flavonoids, ketones, sterols, phenols, amino acid and tannin among ketones. The FT-IR anal. obtained with the reference chart revealed the presence of ketones to identify the functional groups. In this investigation, isolation of 2-Tridecanone from R. chalepensis extracts was analyzed for GCMS anal. MS anal. revealed the presence of 2-Tridecanone compound The HPLC analyses to purified classes of increasing polarity. This study involved multiple reactions and reactants, such as Octyl acetate (cas: 112-14-1Recommanded Product: Octyl acetate).

Octyl acetate (cas: 112-14-1) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Esters contain a carbonyl center, which gives rise to 120掳 C鈥揅鈥揙 and O鈥揅鈥揙 angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C鈥揙鈥揅 bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Recommanded Product: Octyl acetate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Evaluation of inhalation TTC values with the database RepDose was written by Escher, S. E.;Tluczkiewicz, I.;Batke, M.;Bitsch, A.;Melber, C.;Kroese, E. D.;Buist, H. E.;Mangelsdorf, I.. And the article was included in Regulatory Toxicology and Pharmacology in 2010.Application In Synthesis of Ethyl 3-ethoxypropanoate The following contents are mentioned in the article:

The thresholds of toxicol. concern (TTCs) define limit values for substances of unknown toxicity below which dietary intake is considered to be of no concern to human health. The TTC concept has already been used for risk assessment of e.g. food contaminants or flavoring substances and is in discussion to be applied to other classes of compounds such as cosmetic ingredients, household products, non-relevant metabolites in drinking water, and impurities in pharmaceuticals. The present publication aimed to evaluate whether the current TTC concept can also be applied to define limit values for inhalation exposure, using a data set of 203 industrial chems. from the database RepDose. It has been shown, that the NOEC values in classes 1, 2, and 3 are distributed over six orders of magnitude resulting in a considerable overlap between the distribution curves for the three classes. Inhalation thresholds for Cramer classes 1 (compounds likely to be of low-toxicity), 2 (compounds likely to be of moderate toxicity), and 3 (compounds suspect for high toxicity) were analyzed close to the approach described by Munro for oral TTCs. The 5th percentiles NOEC of Cramer classes 1-3 result in thresholds of 1.5 脳 10^-3 ppm for Cramer class 1 and 2.2 脳 10^-5 ppm for Cramer class 3. A threshold could not be derived for class 2 because of the small number of compounds available. If calculated as body doses, the inhalation thresholds for classes 1 and 3 (71 and 4 渭g/person/d, resp.) are considerably lower than the oral thresholds derived by Munro (1800 and 90 渭g/person/d). It has been shown that one reason for this difference is the high sensitivity of the respiratory tract to local effects. In a next step, the values obtained were further refined. If organophosphates or compounds with structural alerts for genotoxicity are excluded, the TTC in Cramer class 1 increases, whereas the TTC in Cramer class 3 remains the same. Based on these analyses two inhalation TTCs for non-genotoxic compounds are proposed: 3.6 脳 10^-3 ppm (180 渭g/person/d) for Cramer class 1 and 2.4 脳 10^-5 ppm (4 渭g/person/d) for Cramer class 3. This study involved multiple reactions and reactants, such as Ethyl 3-ethoxypropanoate (cas: 763-69-9Application In Synthesis of Ethyl 3-ethoxypropanoate).

Ethyl 3-ethoxypropanoate (cas: 763-69-9) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Esters contain a carbonyl center, which gives rise to 120掳 C鈥揅鈥揙 and O鈥揅鈥揙 angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C鈥揙鈥揅 bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Application In Synthesis of Ethyl 3-ethoxypropanoate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

HS/SPME-GC脳GC-TOFMS combined with chemometric methods for differentiation of Xinhui Citri Reticulatae Pericarpium was written by Cao, Luo-wen;Li, Hua;Huang, Dou;Cen, Yan-xiang;Wu, Man-man;Mai, Ze-bin;Li, Lei;Zhou, Zhen;Gao, Wei. And the article was included in Shenyang Nongye Daxue Xuebao in 2021.Electric Literature of C10H20O2 The following contents are mentioned in the article:

In order to identify Xinhui Citri Reticulatae Pericarpium rapidly and non-destructively, headspace solid-phase microextraction two-dimensional gas chromatog. time-of-flight mass spectrometry (HS/SPME-GC脳GC-TOFMS) combined with chemometrics was used to analyze the volatile components of Xinhui Citri Reticulatae Pericarpium and Citri Reticulatae Pericarpium from other habitats. The volatile components of Citri Reticulatae Pericarpium were enriched and concentrated by headspace solid-phase microextraction (HS-SPME). The volatile components were analyzed by two-dimensional gas chromatog. time-of-flight mass spectrometry. The fingerprint chromatograms were used for distinguishing Xinhui Citri Reticulatae Pericarpium from different sources. Canvas software was used to obtain the qual. information of the volatile components and the relative peak areas of the samples. Principal component anal. (PCA) and orthogonal partial least squares discrimination anal. (OPLS-DA) were used to differentiate the compounds between Xinhui Citri Reticulatae Pericarpium and others. The results showed that about 500 compounds were detected in a single sample, and 102 common components in Xinhui Citri Reticulatae Pericarpium were obtained through screening, which was used to characterize the volatile components Xinhui Citri Reticulatae Pericarpium. The common components were mainly terpenes and alcs. and it together formed the unique aroma characteristics and pharmacol. effects of Xinhui Citri Reticulatae Pericarpium. Principal component anal. (PCA) and orthogonal partial least squares (OPLS-DA) were used to identify Xinhui Citri Reticulatae Pericarpium and other Citri Reticulatae Pericarpium, and 13 potential differential compounds between Xinhui Citri Reticulatae Pericarpium and other Citri Reticulatae Pericarpium were obtained. Moreover, methylene ketone was only detected in Xinhui Pericarpium Citri Reticulatae. Overall, our results showed that HS/SPME-GC脳GC-TOFMS combined with chemometrics is promising method for identifying Xinhui Citri Reticulatae Pericarpium, and proposed a new strategy to evaluate the quality of other traditional Chinese medicines. This study involved multiple reactions and reactants, such as Octyl acetate (cas: 112-14-1Electric Literature of C10H20O2).

Octyl acetate (cas: 112-14-1) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Electric Literature of C10H20O2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Fe₃O₄/ZnO/MWCNTs magnetic nanocomposites promoted synthesis of new chromeno pyrano [2,3-d]thiazins: Investigation of antioxidant and antibacterial activities was written by Dadashi, Hani;Hajinasiri, Rahimeh;Hossaini, Zinatossadat. And the article was included in Applied Organometallic Chemistry in 2021.Application In Synthesis of Isopropylisothiocyanate The following contents are mentioned in the article:

The Fe₃O₄/ZnO/MWCNTs magnetic nanocomposites as a high-performance organometallic catalyst were employed for the preparation of new chromeno pyrano [2,3-d]thiazins derivatives I (R = Me, OMe, NO₂; R¹ = H, Me; R² = CH₃, C₂H₅, C₆H₅, 4-CH₃C₆H₄, 4-CH₃OC₆H₄, 4-O₂NC₆H₄; R³ = CH(CH₃)₂, C₂H₅, C₆H₅, 4-CH₃C₆H₄, 4-CH₃OC₆H₄, 4-O₂NC₆H₄; X = O, NH) in high yields via the five component reactions of 2-hydroxyacetophenones like 1-(2-Hydroxy-3-methyl-5-nitrophenyl)ethanone, 1-(2-Hydroxy-5-methylphenyl)ethan-1-one, 1-(2-Hydroxy-3,5-dimethylphenyl)ethanone and 1-(2-hydroxy-5-methoxyphenyl)ethanone, di-Me carbonate, aldehydes R²CHO, malononitrile or Et 2-cyanoacetate, and isothiocyanates R³NCS in ionic liquid at room temperature The Fe₃O₄/ZnO/MWCNTs MNCs were synthesized using ionic liquid [OMIM]Br as a stabilizer and soft template. As well Fe₃O₄/ZnO/MWCNTs MNCs show a good improvement in the yield of the product and showed significant reusable ability. Due to having NH group in synthesized compounds, antioxidant property of some synthesized compounds I was investigated by diphenyl-picrylhydrazine (DPPH) radical trapping and power of ferric reduction experiment Furthermore, the disk diffusion test on Gram-pos. and Gram-neg. bacteria is utilized for investigation of antimicrobial activity of some chromeno pyrano [2,3-d]thiazins I. The achieved outcomes of this experiment demonstrate that these synthesized compounds I could prevent growth of bacteria. Short time of reaction, high yields of product, easy separation of catalyst, and products are some benefits of this process. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Application In Synthesis of Isopropylisothiocyanate).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Application In Synthesis of Isopropylisothiocyanate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Fe₃O₄/ZnO/MWCNTs magnetic nanocomposites promoted synthesis of new chromeno pyrano [2,3-d]thiazins: Investigation of antioxidant and antibacterial activities was written by Dadashi, Hani;Hajinasiri, Rahimeh;Hossaini, Zinatossadat. And the article was included in Applied Organometallic Chemistry in 2021.Formula: C4H7NS The following contents are mentioned in the article:

The Fe₃O₄/ZnO/MWCNTs magnetic nanocomposites as a high-performance organometallic catalyst were employed for the preparation of new chromeno pyrano [2,3-d]thiazins derivatives I (R = Me, OMe, NO₂; R¹ = H, Me; R² = CH₃, C₂H₅, C₆H₅, 4-CH₃C₆H₄, 4-CH₃OC₆H₄, 4-O₂NC₆H₄; R³ = CH(CH₃)₂, C₂H₅, C₆H₅, 4-CH₃C₆H₄, 4-CH₃OC₆H₄, 4-O₂NC₆H₄; X = O, NH) in high yields via the five component reactions of 2-hydroxyacetophenones like 1-(2-Hydroxy-3-methyl-5-nitrophenyl)ethanone, 1-(2-Hydroxy-5-methylphenyl)ethan-1-one, 1-(2-Hydroxy-3,5-dimethylphenyl)ethanone and 1-(2-hydroxy-5-methoxyphenyl)ethanone, di-Me carbonate, aldehydes R²CHO, malononitrile or Et 2-cyanoacetate, and isothiocyanates R³NCS in ionic liquid at room temperature The Fe₃O₄/ZnO/MWCNTs MNCs were synthesized using ionic liquid [OMIM]Br as a stabilizer and soft template. As well Fe₃O₄/ZnO/MWCNTs MNCs show a good improvement in the yield of the product and showed significant reusable ability. Due to having NH group in synthesized compounds, antioxidant property of some synthesized compounds I was investigated by diphenyl-picrylhydrazine (DPPH) radical trapping and power of ferric reduction experiment Furthermore, the disk diffusion test on Gram-pos. and Gram-neg. bacteria is utilized for investigation of antimicrobial activity of some chromeno pyrano [2,3-d]thiazins I. The achieved outcomes of this experiment demonstrate that these synthesized compounds I could prevent growth of bacteria. Short time of reaction, high yields of product, easy separation of catalyst, and products are some benefits of this process. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Formula: C4H7NS).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Formula: C4H7NS

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Untargeted profiling and differentiation of geographical variants of wine samples using headspace solid-phase microextraction flow-modulated comprehensive two-dimensional gas chromatography with the support of tile-based Fisher ratio analysis was written by Sudol, Paige E.;Galletta, Micaela;Tranchida, Peter Q.;Zoccali, Mariosimone;Mondello, Luigi;Synovec, Robert E.. And the article was included in Journal of Chromatography A in 2022.Application of 2198-61-0 The following contents are mentioned in the article:

The volatile fraction of food, also called the food volatilome, is increasingly used to develop new fingerprinting approaches. The characterization of the food volatilome is important to achieve desired flavor profiles in food production processes, or to differentiate different products, with winemaking being one popular area of interest. In the present research, headspace solid-phase microextraction (HS SPME) coupled to flow-modulated comprehensive two-dimensional gas chromatog. with time-of-flight mass spectrometry (FM GCxGC-TOFMS) was used to characterize geog.-based differences in the volatilome of five white “Grillo” wines (of Sicilian origin), comprising the five sample classes. All wines were produced with the same vinification method in 2019. To minimize the influence of minor bottle-to-bottle differences, three bottles of the same wine were randomly selected, and three samples were collected per bottle, resulting in nine sample replicates per wine. Particular emphasis was devoted to the operational conditions of a novel low duty cycle flow modulator. A fast FM GCxGC-TOFMS method with a modulation period of 700 ms and a re-injection period of 80 ms was developed. Following, the instrumental software was exploited to identify class-distinguishing analytes in the dataset via tile-based Fisher ratio anal. (i.e., ChromaTOF Tile). A tile size of 10 modulations (7 s) on the first dimension and 45 spectra (300 ms) on the second dimension was used to encompass average peak widths and to account for minor retention time shifting. Off-line software was used to apply an ANOVA test. A p-value of 0.01 was applied in order to select the most important class-distinguishing analytes, which were input to principal component anal. (PCA). The PCA scores plot showed distinct clustering of the wines according to geog. origin, although the loadings revealed that only a few analytes were necessary to differentiate the wines. However, a comprehensive flavor profile assessment underscored the importance of all the information output by the ChromaTOF Tile software. This study involved multiple reactions and reactants, such as Isopentyl hexanoate (cas: 2198-61-0Application of 2198-61-0).

Isopentyl hexanoate (cas: 2198-61-0) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Application of 2198-61-0

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Aerosol-Assisted Chemical Vapor Deposition of ZnS from Thioureide Single Source Precursors was written by Sullivan, Hannah S. I.;Parish, James D.;Thongchai, Prem;Kociok-Kohn, Gabriele;Hill, Michael S.;Johnson, Andrew L.. And the article was included in Inorganic Chemistry in 2019.Computed Properties of C4H7NS The following contents are mentioned in the article:

A family of 12 zinc(II) thioureide complexes, of the general form [{L}ZnMe], [{L}Zn{N(SiMe₃)₂}], and [{L}₂Zn], have been synthesized by direct reaction of the thiourea pro-ligands ⁱPrN(H)CS(NMe₂) H[L¹], CyN(H)CS(NMe₂) H[L³], ^tBuN(H)CS(NMe₂) H[L²], and MesN(H)CS(NMe₂) H[L⁴] with either ZnMe₂ (1:1) or Zn{N(SiMe₃)₂}₂ (1:1 and 2:1) and characterized by elemental anal., NMR spectroscopy, and TGA. The mol. structures of complexes [{L¹}ZnMe]₂ (1), [{L²}ZnMe]₂ (2), [{L³}ZnMe]_{鈭?/sub> (3), [{L⁴}ZnMe]2 (4), [{L¹}Zn{N(SiMe3)2}]2 (5), [{L²}Zn{N(SiMe3)2}]2 (6), [{L³}Zn{N(SiMe3)2}]2 (7), [{L⁴}Zn{N(SiMe3)2}]2 (8), [{L¹}2Zn]2 (9), and [{L⁴}2Zn]2 (12) have been unambiguously determined using single crystal x-ray diffraction studies. TGA has been used to assess the viability of 1–12 as single source precursors for the formation of ZnS. On the basis of TGA data compound 9 was investigated for its utility as a single source precursor to deposit ZnS films on silica-coated glass and crystalline silicon substrates at 150, 200, 250, and 300掳 using an aerosol assisted CVD (AACVD) method. The resultant films are hexagonal-ZnS by Raman spectroscopy and PXRD, and the surface morphologies were examined by SEM and AFM anal. Thin films deposited from (9) at 250 and 300掳 are comprised of more densely packed and more highly crystalline ZnS than films deposited at lower temperatures The electronic properties of the ZnS thin films were deduced by UV-visible spectroscopy to be very similar and displayed absorption behavior and band gap (Eg = 3.711-3.772 eV) values between those expected for bulk cubic-ZnS (Eg = 3.54 eV) and hexagonal-ZnS (Eg = 3.91 eV). This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Computed Properties of C4H7NS).}

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Computed Properties of C4H7NS

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Aerosol-Assisted Chemical Vapor Deposition of ZnS from Thioureide Single Source Precursors was written by Sullivan, Hannah S. I.;Parish, James D.;Thongchai, Prem;Kociok-Kohn, Gabriele;Hill, Michael S.;Johnson, Andrew L.. And the article was included in Inorganic Chemistry in 2019.HPLC of Formula: 2253-73-8 The following contents are mentioned in the article:

A family of 12 zinc(II) thioureide complexes, of the general form [{L}ZnMe], [{L}Zn{N(SiMe₃)₂}], and [{L}₂Zn], have been synthesized by direct reaction of the thiourea pro-ligands ⁱPrN(H)CS(NMe₂) H[L¹], CyN(H)CS(NMe₂) H[L³], ^tBuN(H)CS(NMe₂) H[L²], and MesN(H)CS(NMe₂) H[L⁴] with either ZnMe₂ (1:1) or Zn{N(SiMe₃)₂}₂ (1:1 and 2:1) and characterized by elemental anal., NMR spectroscopy, and TGA. The mol. structures of complexes [{L¹}ZnMe]₂ (1), [{L²}ZnMe]₂ (2), [{L³}ZnMe]_{鈭?/sub> (3), [{L⁴}ZnMe]2 (4), [{L¹}Zn{N(SiMe3)2}]2 (5), [{L²}Zn{N(SiMe3)2}]2 (6), [{L³}Zn{N(SiMe3)2}]2 (7), [{L⁴}Zn{N(SiMe3)2}]2 (8), [{L¹}2Zn]2 (9), and [{L⁴}2Zn]2 (12) have been unambiguously determined using single crystal x-ray diffraction studies. TGA has been used to assess the viability of 1–12 as single source precursors for the formation of ZnS. On the basis of TGA data compound 9 was investigated for its utility as a single source precursor to deposit ZnS films on silica-coated glass and crystalline silicon substrates at 150, 200, 250, and 300掳 using an aerosol assisted CVD (AACVD) method. The resultant films are hexagonal-ZnS by Raman spectroscopy and PXRD, and the surface morphologies were examined by SEM and AFM anal. Thin films deposited from (9) at 250 and 300掳 are comprised of more densely packed and more highly crystalline ZnS than films deposited at lower temperatures The electronic properties of the ZnS thin films were deduced by UV-visible spectroscopy to be very similar and displayed absorption behavior and band gap (Eg = 3.711-3.772 eV) values between those expected for bulk cubic-ZnS (Eg = 3.54 eV) and hexagonal-ZnS (Eg = 3.91 eV). This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8HPLC of Formula: 2253-73-8).}

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.HPLC of Formula: 2253-73-8

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics