ISSN:
1600-5759
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Chemistry and Pharmacology
,
Geosciences
,
Physics
Notes:
The first single-crystal studies of three bis-transoid Cu–hydroxamate salts, bis(3-methoxy-4,N-dimethylbenzohydroxamato-O,O′)copper(II), [Cu(C10H12NO3)2], bis(4-chloro-N-methylbenzohydroxamato-O,O′)copper(II), [Cu(C8H7ClNO2)2], bis(N-methyl-3,5-dinitrobenzohydroxamato-O,O′)copper(II)–chloroform (1/2), [Cu(C8H6N3O6)2]·2CHCl3, are presented. The Cu atom in each of the title compounds sits at a center of inversion and displays a nearly square-planar geometry with the hydroxamate-O atoms connected to it in a syn configuration. The N atoms are in a transoid configuration. Each five-membered Cu–hydroxamate ring is planar, thus providing evidence that a planar N atom is present in each ring. The phenyl groups are twisted with respect to the hydroxamate group by ∼40–54°. The angular strain of the sp2 carbonyl oxygen is significant (∼10° from ideal).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S0108270100001025
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