ChemInform Abstract: Direct Evidence of Coordination on the Endocyclic Nitrogen Atom in the Adducts of 2-Aminoazoles and 2-Aminoazines with Copper(II) Acetate

Autor: D. A. Garnovsky, M. A. Porai-Koshits, A.D. Garnovsky, O. A. Osipov, A.S. Antsishkina, A.P. Sadimenko
Rok vydání: 1989
Předmět:
Zdroj: ChemInform. 20
ISSN: 0931-7597
DOI: 10.1002/chin.198937052
Popis: The coordinative bond has been shown by X-ray structure analysis to be localized at the endocyclic nitrogen atom of pyridine type in the adducts of copper(II) acetate of the composition [Cu(CH3COO)2L]2 where L = 2-aminopyridine or 2-aminothiazole and Cu(CH3COO)2·2L where L = 2-amino-1-methylbenzimidazole or 2-amino-1-heptylbenzimidazole. The lowering of the stretching vibration frequencies of the primary amino group in the IR spectra of complex compounds with Lewis acids used earlier as a test for coordination on the exocyclic nitrogen atom is actually caused by the realization of intra- and intermolecular hydrogen bonds in the compounds studied.
Databáze: OpenAIRE