Journal
MOLECULES
Volume 26, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/molecules26123548
Keywords
cyclic voltammetry; silicon catecholates; NMR studies; Si-C bond cleavage; X-ray diffraction
Funding
- Russian Foundation for Basic Research [19-29-08021]
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Hexacoordinated heteroligand silicon catecholates, which are potentially soluble compounds with high hydrolytic stability and diverse redox properties, were synthesized via transesterification and characterized by various analytical techniques. The compounds showed high hydrolytic stability and diverse redox properties, with up to three oxidation waves observed.
Hexacoordinated heteroligand silicon catecholates, although being prospective as easily soluble compounds with high hydrolytic stability and diverse redox properties, have been insufficiently studied. The transesterification of 1-(trimethoxysilylmethyl)-2-oxohexahydroaze or N-methyl-N-(trimethoxysilylmethyl)acetamide by two equivalents of catechol derivatives in the presence of dicyclohexylamine afforded a series of target compounds in good yield. The complexes were characterized using elemental analysis, FTIR, H-1, C-13 and Si-29 NMR spectra, X-ray crystallography and cyclic voltammetry. X-ray diffraction confirmed that the silicon atom possesses the octahedral geometry of the SiCO5 polyhedron that remains unchanged in solution as it follows from Si-29 NMR data. The compounds demonstrated up to three oxidation waves; and the reduction profile strongly depended on the nature of the substituents on a catecholate anion.
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