Electrochemical Synthesis and Structure
of 2-Amino-1-Ethylbenzimidazole Adducts of Copper, Cobalt,
and Zinc Chelates in the N,N,S Ligand Environment
D. A. Garnovskiia, *, G. G. Aleksandrovb, †, N. I. Makarovac, S. I. Levchenkova, V. G. Vlasenkod,
Ya. V. Zubavichuse, A. I. Uraevc, and A. S. Burlovc
Translated by Z. Svitanko
a Southern Scientific Center, Russian Academy of Sciences, Rostov-on-Don, 344006 Russia
b Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow, 119991 Russia
cInstitute of Physical and Organic Chemistry, Southern Federal University, Rostov-on-Don, 344000 Russia
dResearch Institute of Physics, Southern Federal University, Rostov-on-Don, 344000 Russia
e National Research Center “Kurchatov Institute”, Moscow, 123182 Russia
Correspondence to: *e-mail: garn@ipoc.rsu.ru
†Deceased.
Received 15 June, 2016
Abstract—2-Amino-1-ethylbenzimidazole (L1) adducts with copper(II), cobalt(II), and zinc(II) chelates of N,N,S tridentate tosylamino-functionalized mercaptopyrazole-containing Schiff base (H2L), resulting from condensation of 2-tosylaminoaniline with 1-phenyl-3-methyl-4-formylpyrazole-5-thiol, with the general formula [ML · L1] were obtained by electrochemical method. The structure and composition of the complexes were confirmed by the data of C, H, N elemental analysis, IR and 1H NMR spectroscopy, and magnetochemical and X-ray spectral measurements. The mononuclear structure of the copper(II) adduct with coordination bond located on the pyridine type endocyclic nitrogen atom of 2-amino-1-ethylbenzimidazole was proved by X-ray diffraction.
Keywords: electrochemical synthesis, Schiff bases, aminoheterocycles, metal-containing pharmaceuticals, magnetochemistry, X-ray spectral and X-ray diffraction analysis
DOI: 10.1134/S0036023617080071