Synthesis of copper(II) complexes with 3,5-bis(4,6-dimethylpyrimidin-2-yl)-4H-1,2,4-triazol-4-amine (L). Molecular and crystal structures of L and [Cu2L2Cl4]center dot 2MeCN

Synthesis of copper(II) complexes with 3,5-bis(4,6-dimethylpyrimidin-2-yl)-4H-1,2,4-triazol-4-amine (L). Molecular and crystal structures of L and [Cu2L2Cl4]center dot 2MeCN Full article

Journal

Inorganica Chimica Acta
ISSN: 0020-1693 , E-ISSN: 1873-3255

Output data

Year: 2011, Volume: 365, Number: 1, Pages: 384-390 Pages count : DOI: 10.1016/j.ica.2010.09.046

Tags

1,2,4-Triazole; Pyrimidine; N-ligands; Copper(II) complexes; X-ray diffraction; Crystal structure

Authors

Bushuev Mark B. ^1,2 , Peresypkina Eugenia V. ¹ , Krivopalov Viktor P. ³ , Virovets Alexander V. ¹ , Lavrenova Ludmila G. ^1,2 , Shkurko Oleg P. ³

Affiliations

1	(Данные Web of science) Russian Acad Sci, Nikolaev Inst Inorgan Chem, Siberian Branch, Novosibirsk 630090, Russia
2	(Данные Web of science) Novosibirsk State Univ, Novosibirsk 630090, Russia
3	(Данные Web of science) Russian Acad Sci, NN Vorozhtsov Novosibirsk Inst Organ Chem, Siberian Branch, Novosibirsk 630090, Russia

A series of copper(II) complexes, i.e. Cu2LCl4, CuLCl2 center dot H2O and [Cu2L2Cl4]center dot 2MeCN (8), based on a new potentially polytopic ligand, 3,5-bis(4,6-dimethylpyrimidin-2-yl)-4H-1,2,4-triazol-4-amine (3b, L), have been synthesized. The crystal structures of L and [Cu2L2Cl4]center dot 2MeCN were studied by X-ray single crystal analysis. The dinuclear compound [Cu2L2Cl4]center dot 2MeCN represents the first example of structurally characterized metal complexes with 3,5-di(pyrimidin-2-yl)-4H-1,2,4-triazol-4-amines. Both copper atoms have distorted tetragonal-pyramidal 3N + 2Cl environment. Surprisingly, in contrast to the complexes based on 3,5-di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine (pyridinyl analog of L), the compound [Cu2L2Cl4]center dot 2MeCN adopts a dinuclear trans-(N', N-1, N-2)(2) double bridging binding mode which is due to tridentate coordination of two L molecules linking two copper atoms through N-1, N-2-triazole and N'-pyrimidine atoms. It seems to be reasonable that it is methyl groups in pyrimidinyl moiety that obstruct the expected dinuclear (N', N-1, N-2, N '')(2) double bridging coordination being one of the most common for 4-substituted 3,5-di(pyridin-2-yl)-4H-1,2,4-triazoles and 3,5-di(pyridin-2-yl)-1,2,4-triazolates. Due to pi-pi stacking interactions, molecules of Cu2L2Cl4 in the structure of [Cu2L2Cl4]center dot 2MeCN form 1D chains. (C) 2010 Elsevier B.V. All rights reserved.

Bushuev M.B. , Peresypkina E.V. , Krivopalov V.P. , Virovets A.V. , Lavrenova L.G. , Shkurko O.P.
Synthesis of copper(II) complexes with 3,5-bis(4,6-dimethylpyrimidin-2-yl)-4H-1,2,4-triazol-4-amine (L). Molecular and crystal structures of L and [Cu2L2Cl4]center dot 2MeCN
Inorganica Chimica Acta. 2011. V.365. N1. P.384-390. DOI: 10.1016/j.ica.2010.09.046 WOS Scopus РИНЦ

Published print:

Jan 1, 2011

Web of science	WOS:000285624200057
Scopus	2-s2.0-78650558749
Elibrary	16724969
OpenAlex	W2151787396