The competition of basicity and steric factors in the nitroxide donor functions in metal complexes: The study of M(hfac)(2) (M=Co, Ni) adducts with 3-imidazoline nitroxides

The competition of basicity and steric factors in the nitroxide donor functions in metal complexes: The study of M(hfac)(2) (M=Co, Ni) adducts with 3-imidazoline nitroxides Full article

Journal

Polyhedron
ISSN: 0277-5387

Output data

Year: 1996, Volume: 15, Number: 23, Pages: 4211-4219 Pages count : 9 DOI: 10.1016/0277-5387(96)00159-3

Authors

Burdukov Alexei B. ¹ , Ovcharenko Victor I. ¹ , Sagdeev Renad Z. ¹ , Pervukhina Natalie V. ² , Ikorskii Vladimir N. ² , Kirilyuk Igor A. ³ , Grigorev Igor A. ³

Affiliations

1	International Tomography Center, Russian Academy of Sciences, Siberian Branch, Institutskaya St. 3A, 630090 Novosibirsk, Russia
2	Institute of Inorganic Chemistry, Russian Academy of Sciences, Siberian Branch, Lavrent'ev Av. 3, 630090 Novosibirsk, Russia
3	Institute of Organic Chemistry, Russian Academy of Sciences, Siberian Branch, Lavrent'ev Av. 7, 630090 Novosibirsk, Russia

The similar nitroxides 2,2,5,5-tetramethyl-4-phenyl-3-imidazoline-1-oxyl (L(1)) and 2,2-dimethyl-5,5-dimethoxy-4-phenyl-3-imidazoline-1-oxyl (L(2)) form complexes of different composition on reaction with cobalt and nickel hexafluoroacetylacetonates : M(hfac)(2)L(2)(1) and M(hfac)(2)(H2O)(2)L(2)(2). In the M(hfac)(2)L(2)(1) complexes the nitroxides are bonded to the metal ion through the nitroxide oxygen but the imine nitrogen does not participate in coordination for steric reasons. In M(hfac)(2)(H2O)(2)L(2)(2) the nitroxide moieties are H-bonded to the coordinated water molecules through the imine nitrogen atoms and methoxy oxygen atoms. The nitroxide L(2) is unstable in the presence of Co(hfac)(2) and on removal of water decomposes to yield the adduct with nitrone Co(hfac)(2)L(2)(3), L(3) = 2,2-dimethyl-5-methoxy-4-phenyl-2H-imidazol 1-oxide. The complexes M(hfac)(2)L(2)(1) demonstrate strong antiferromagnetic coupling between the metal ion and nitroxides. Copyright (C) 1996 Elsevier Science Ltd

Burdukov A.B. , Ovcharenko V.I. , Sagdeev R.Z. , Pervukhina N.V. , Ikorskii V.N. , Kirilyuk I.A. , Grigorev I.A.
The competition of basicity and steric factors in the nitroxide donor functions in metal complexes: The study of M(hfac)(2) (M=Co, Ni) adducts with 3-imidazoline nitroxides
Polyhedron. 1996. V.15. N23. P.4211-4219. DOI: 10.1016/0277-5387(96)00159-3 WOS Scopus РИНЦ OpenAlex

Published print:

Sep 1, 1996

Web of science:	WOS:A1996VH90500013
Scopus:	2-s2.0-0001386617
Elibrary:	13233263
OpenAlex:	W1965042929

DB	Citing
Web of science	3
Scopus	5
Elibrary	5
OpenAlex	4