Synthesis and structure of enaminoketones of pyrazole containing 2-thione(selenone)benzimidazolyl fragments and their zinc and cadmium complexes
- Authors: Borodkina I.G.1, Burlov A.S.1, Borodkin G.S.1, Chesnokov V.V.1, Kuzmenko T.A.1, Uraev A.I.1, Korshunova E.V.1, Vasil’chenko I.S.1
-
Affiliations:
- Institute of Physical and Organic Chemistry
- Issue: Vol 86, No 4 (2016)
- Pages: 876-884
- Section: Article
- URL: https://journals.rcsi.science/1070-3632/article/view/214667
- DOI: https://doi.org/10.1134/S1070363216040198
- ID: 214667
Cite item
Abstract
New ligand systems based on 4-formyl-5-hydroxypyrazole and 1-aminobenzimidazole derivatives are synthesized. The obtained enamines and their Zn2+ and Cd2+ metal complexes of composition ML2 were investigated using the IR, heteronuclear (1H, 13C, 15N, 77Se, 113Cd) and two-dimensional NMR spectroscopy (COSY, HSQC, HMBC). The data of physicochemical investigations and quantum-chemical calculations showed that the ligands exist in the ketoamine tautomeric form. Quantum-chemical simulation of Zn(II) and Cd(II) complexes showed that the zinc complexes adopt the pseudo-tetrahedral and the cadmium complexes pseudo-octahedral configuration.
About the authors
I. G. Borodkina
Institute of Physical and Organic Chemistry
Author for correspondence.
Email: nmr@ipoc.sfedu.ru
Russian Federation, pr. Stachki 194/2, Rostov-on-Don, 344090
A. S. Burlov
Institute of Physical and Organic Chemistry
Email: nmr@ipoc.sfedu.ru
Russian Federation, pr. Stachki 194/2, Rostov-on-Don, 344090
G. S. Borodkin
Institute of Physical and Organic Chemistry
Email: nmr@ipoc.sfedu.ru
Russian Federation, pr. Stachki 194/2, Rostov-on-Don, 344090
V. V. Chesnokov
Institute of Physical and Organic Chemistry
Email: nmr@ipoc.sfedu.ru
Russian Federation, pr. Stachki 194/2, Rostov-on-Don, 344090
T. A. Kuzmenko
Institute of Physical and Organic Chemistry
Email: nmr@ipoc.sfedu.ru
Russian Federation, pr. Stachki 194/2, Rostov-on-Don, 344090
A. I. Uraev
Institute of Physical and Organic Chemistry
Email: nmr@ipoc.sfedu.ru
Russian Federation, pr. Stachki 194/2, Rostov-on-Don, 344090
E. V. Korshunova
Institute of Physical and Organic Chemistry
Email: nmr@ipoc.sfedu.ru
Russian Federation, pr. Stachki 194/2, Rostov-on-Don, 344090
I. S. Vasil’chenko
Institute of Physical and Organic Chemistry
Email: nmr@ipoc.sfedu.ru
Russian Federation, pr. Stachki 194/2, Rostov-on-Don, 344090