Synthesis, characterization, reactivity, and catalytic studies of heterobimetallic vanadium(V) complexes containing hydrazone ligands was written by Kumar, Arvind;Kurbah, Sunshine D.;Syiemlieh, Ibanphylla;Dhanpat, Shobha A.;Borthakur, Rosmita;Lal, Ram A.. And the article was included in Inorganica Chimica Acta in 2021.Recommanded Product: Ethyl 2-hydroxybenzoate This article mentions the following:
Six heterobimetallic alkali metal dioxidovanadium(V) coordination polymer complexes {[M6{VO(μ-O)}2(μ-OH)4(μ4-slox/nph)].n DMF}â?/sub> where M = Na, K, and Cs; n = 1 for (1), 0 for (2)-(6) of two dihydrazone ligands, disalicylaldehydeoxaloyldihydrazone (H4slox) and bis(2-hydroxy-1-naphthaldehyde)oxaloyldihydrazone (H4nph) are reported. All the complexes were characterized by various physicochem. techniques such as elemental analyses, molar conductance, IR, NMR, UV-visible, and cyclic voltammetry. The IR, 1HNMR, and 13CNMR spectral data suggest that the dihydrazones are coordinated through phenolate/naphtholate oxygen, enolate oxygen, and azine nitrogen atoms to the metal centers. The structure of {[Na6{VO(μ-O)}2(μ-OH)4(μ4-slox)].DMF}â?/sub> (1) is also determined by single-crystal x-ray data, which revealed that the H4slox coordinated via all possible dative sites to metal centers as tetrabasic octadentate ligand. The vanadium metal centers adopted distorted square-pyramidal coordination geometries, and the sodium atoms are also in five coordination atms. The electronic spectra of the complexes showed LMCT bands in addition to intra-ligand Ï â?Ï* and n â?Ï* transitions. As evident from the cyclic voltammetry, the complexes showed two metal-centered electron transfer reactions [(VVVV(slox)2-)/VVVIV(slox)3-] and [(VVVIV(slox)3-)/VVVIV(slox)4-], in addition to the ligand centered electron transfer reactions. Further, bovine serum albumin (BSA) interaction studies of {[Na6{VO(μ-O)}2(μ-OH)4(μ4-slox)].DMF}â?/sub> (1) and [Na6{VO(μ-O)}2(μ-OH)4(μ4-nph)]â?/sub> (4) revealed strong binding affinity. Also, the catalytic studies of 1 and 4 are effective for the oxidation of alcs. into their corresponding aldehydes and ketones and bromination of some organic substrates in the presence of H2O2 as an oxidizing agent. In the experiment, the researchers used many compounds, for example, Ethyl 2-hydroxybenzoate (cas: 118-61-6Recommanded Product: Ethyl 2-hydroxybenzoate).
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