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Crystal Structure and Magnetic Properties of Copper(II) and Nickel(II) Binuclear Complexes with Bisacylhydrazones Based on 2,6‐Diformyl‐4‐methylphenol
Author(s) -
Tupolova Yuliya P.,
Popov Leonid D.,
Lukov Vladimir V.,
Shcherbakov Igor N.,
Levchenkov Sergey I.,
Kogan Victor A.,
Maevskiy Oleg V.,
Vlasenko Valeriy G.,
Zubenko Alexander A.
Publication year - 2009
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200801299
Subject(s) - nickel , crystallography , chemistry , deprotonation , copper , crystal structure , extended x ray absorption fine structure , octahedron , magnetochemistry , ion , atom (system on chip) , stereochemistry , absorption spectroscopy , physics , organic chemistry , computer science , embedded system , quantum mechanics
The series of binuclear Cu(II) and Ni(II) complexes with an asymmetrical exchange fragment based on 2,6‐diformyl‐4‐methylphenol bishydrazone has been synthesized for the first time. The compositions and structures of both ligands and its complexes have been established with the data of IR, 1 H NMR, and extended X‐ray absorption fine structure (EXAFS) spectroscopical studies as well as magnetic measurements. The structure of [Ni 2 L 3 (μ‐Pz)] · 2CH 3 OH (L = triply deprotonated form of bishydrazone, Pz = pyrazol) was confirmed by X‐ray crystallographic analysis. In this complex, the coordination environment of two nickel ions is quite different, one nickel atom is square‐planar and the other is distorted octahedral coordinated. The values of exchange parameter calculated in terms of HDVV theory have been compared with the features of an asymmetrical exchange fragment's electronic and geometrical structure.