The synthesis, characterization, and electrochemistry of molecular cobaloxime/organocobaloxime: catalysts for cycloaddition of carbon dioxide and epoxides

Autor:	Mahmut Ulusoy, Mustafa Durgun, Ahmet Kilic, Armagan Keles, Metin Dagdevren, Ismail Yilmaz, Emine Aytar
Rok vydání:	2014
Předmět:	Inorganic chemistry Molar conductivity Carbon-13 NMR Cycloaddition Catalysis Solvent chemistry.chemical_compound chemistry Intramolecular force Pyridine Polymer chemistry Materials Chemistry Lewis acids and bases Physical and Theoretical Chemistry
Zdroj:	Journal of Coordination Chemistry. 67:2661-2679
ISSN:	1029-0389 0095-8972
DOI:	10.1080/00958972.2014.948431
Popis:	The new cobaloxime (1), organocobaloxime (2), and their intramolecular hydrogen (O–H⋯O) bridges replaced by Cu(II)-containing multinuclear cobaloximes (3–10) were synthesized and characterized by elemental analysis, 1H and 13C NMR spectra, FT-IR spectra, UV–vis spectra, LC-MS spectra, molar conductivity measurements, melting point measurements, and magnetic susceptibility measurements. Their electrochemical properties were investigated using cyclic voltammetric techniques in DMSO solution. The cobaloxime or organocobaloxime (1, 2) were used as precursors, replacing intramolecular O–H⋯O bridges, forming multinuclear complexes (3–10). Then, these compounds were used as homogeneous catalysts for cyclic carbonate synthesis from carbon dioxide (CO2) and epoxides. In the catalytic experiments, dimethyl amino pyridine (DMAP) was used as co-catalyst, since DMAP was a more active base with higher yield compared to other Lewis bases. It is not necessary to use solvent according to catalytic test results, important ...
Databáze:	OpenAIRE
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