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X-ray structural investigations have been carried out to determine the structure of the title compound. Synthesis of this compound is described. Results of studies of related metallocenium salts are reported.

A method is developed to prepare a complex of copper(II) chloride with 3-(hydroxyiminomethyl)-5-(2,5-dimethylphenyl)isoxazole (L) of the composition [Cu2L2(μ-Cl)2Cl2]. Its molecular and crystal structure is determined by single crystal X-ray diffraction. Examination of the curve μef(T) within the 2-300 K temperature range reveals the presence of antiferromagnetic interactions between unpaired electrons of copper(II).

Mössbauer studies were carried out for the mixed complexes FexZn1−x(ATr)3(NO3)2 (0.2≤x≤1) having a polynuclear chain structure, for which we had earlier found a significant decrease in the1A1 5T2 spin transition temperature when iron was replaced with zinc. For these complexes, we have found for the first time a tendency toward an increase in the chemical shifts and quadrupole splitting of iron atoms in the low-spin state with the degree of their replacement by other metal atoms. A correlation between these Mössbauer spectral data and the spin transition temperature was found. The results of these studies are explained in terms of the model of steric strains in molecular fragments of the chain structure of the complexes appearing when iron atoms are replaced by zinc atoms.