Abstract: Formation of the outer-sphere complex between chloroform and bis-(N-phenyl-salicylaldiminato)copper(II) (Cu(N-Ph-salim)2) has been studied using 1H and 13C NMR. The data on relaxation rates and chemical shifts for 1H and 13C nuclei of chloroform and for the 2H nucleus of deuterochloroform were quantitatively interpreted in terms of the theory for NMR of paramagnetic species and quadrupole nuclear relaxation in solutions. Stability constants of the outer-sphere complex formed were found to be β = 0.12 M−1 and β = 0.46 M−1 in deuterotoluene and CCl4 solutions respectively. The outer-sphere complex is suggested to be formed via hydrogen bond between a hydrogen atom of CHCl3 and the oxygen atom of the inner-sphere N-phenyl-salicylaldiminato ligand and to be further stabilized due to a weak direct donor-acceptor interaction between the Cu(II) atom and the chlorine atom of chloroform. The distance between the inner-sphere oxygen atom and the proton of the outer-sphere chloroform ligand is estimated to be 2.8 ± 0.1 Å, the proton and the chloroform carbon atom being outside the basal plane of (Cu(N-Ph-salim)2).

Cite: Stepanov A.G. , Nekipelov V.M. , Zamaraev K.I.
NMR Study of the Structure of the Outer-Sphere Complex between Chloroform and bis-(N-phenyl-salicylaldiminato)copper(II)
Journal of Magnetic Resonance (1969), 1969 до 1992. 1986. V.68. N1. P.30-39. DOI: 10.1016/0022-2364(86)90313-6 WOS Scopus РИНЦ ANCAN OpenAlex

Dates:

Submitted:	May 17, 1985
Accepted:	Dec 10, 1985
Published print:	Jun 1, 1986
Published online:	Jun 30, 2004

Identifiers:

Web of science:	WOS:A1986C816300003
Scopus:	2-s2.0-0346548534
Elibrary:	31172567
Chemical Abstracts:	1986:633258
Chemical Abstracts (print):	105:233258
OpenAlex:	W2044767259

Citing:

DB	Citing
Web of science	11
Scopus	9
Elibrary	10
OpenAlex	5

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