Two new pseudohalide-bridged Cu(II) complexes with a hydrazone ligand: Syntheses,crystal structures and magnetic studies |
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| Authors: | Sambuddha Banerjee Soma Sen Subhra Basak Samiran Mitra David L Hughes Cédric Desplanches |
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| Institution: | 1. Department of Chemistry, Jadavpur University, Kolkata 700 032, India;2. School of Chemical Sciences and Pharmacy, University of East Anglia, Norwich NR4 7TJ, UK;3. Institut de Chimie de la Matière Condensée de Bordeaux – CNRS, Université Bordeaux 1, Avenue du Dr. Schweitzer, F-33608 Pessac, France |
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| Abstract: | Two new pseudohalide-bridged copper(II) complexes {Cu(PBH)(μ1,1-CNO)}2] (1) and {Cu(PBH)(μ1,5-NCNCN)}n (2) (where HPBH = 2-pyridinecarboxaldehyde benzoyl hydrazone) have been synthesised and characterised by elemental analysis, CV, IR and UV–Vis spectral studies. The tridentate hydrazone pro-ligand (HPBH) was obtained by the condensation of benzhydrazide and pyridine-2-carboxaldehyde. Structures of both complexes have been established by X-ray crystallography which shows that 1 is a μ1,1-CNO?-bridged dimer whereas 2 is a μ1,5-dca-bridged (dca = dicyanamide) linear polynuclear structure. Variable temperature magnetic susceptibility studies indicate weak antiferromagnetic interactions with J values ?0.50 cm?1 and ?0.10 cm?1 for 1 and 2, respectively. |
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