Structure Copper(II) Complexes with N-Methylacetohydroxamic
Acid in Crystal and Solution

A. V. Rotov, E. A. Ugolkova, N. N. Efimov,
E. Kh. Lermontova, and V. V. Minin

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences,
Leninskii pr. 31, Moscow, 119991 Russia

e-mail: rotov@igic.ras.ru

Received June 4, 2014

Abstract—The structure of the dimeric complex [CuL₂]₂ (HL is N-methylacetohydroxamic acid) formed by two
square-planar CuL₂ moieties with the trans coordination of the ligands has been studied by X-ray crystallography. In
methylene chloride at 297 K, the complex exists as two species, which are monomeric as probed by electron paramag-
netic resonance. At 80 K, the dimeric and monomeric forms are identified. The relative concentrations of paramagnetic
forms and their magnetic resonance parameters have been determined from simulation of EPR spectra.

DOI: 10.1134/S0036023614120201

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