Abstract
Two copper complexes {[Cu(phen)(azpy)(H 2O)(ClO 4)](ClO 4)} n 1 (phen=1,10-phenthroline, azpy=4,4′-azobispyridine) and {[Cu(phen)(bpe)(H 2O)(ClO 4)](ClO 4)} n 2 (bpe= trans-1,2-bis(4-pyridyl)ethylene), have been synthesized and characterized. The X-ray analysis reveals that copper ion has distorted square pyramidal coordination environments in the complexes 1 and 2. The copper is coordinated by two N atoms of phen, two N atoms from two bridging ligand azpy in 1 and from two bridging ligand bpe in 2, one O atom of coordinated water. Due to Jahn Teller distortion the sixth site in 1 and 2 is occupied by one O atom from one perchlorate anion. Copper ions are linked to each other through bridging ligand azpy in 1 and bridging ligand bpe in 2 to form one-dimensional chain. Variable-temperature magnetic susceptibility studies show that there is a weak antiferromagnetic interaction between the Copper ions in 1 and 2.
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