Two new pseudohalide bridged di- and poly-nuclear copper(II) complexes: Synthesis, crystal structures and magnetic studies
摘要:
Two new pseudohalide bridged di- and poly-nuclear copper(II) complexes [Cu-2(L)2(mu(1.1)-N-3)(2)] (1), [Cu(L)(mu(1.3)-NCS)](n) (2), [LH = C6H5C(O)NHN=C(CH3)C5H4N] have been synthesised and characterised by elemental analysis, IR and UV-Vis spectral studies. Structures of both the complexes have been established by X-ray crystallography. A tridentate hydrazone ligand (LH) obtained by the condensation of benzhydrazide and 2-acetylpyridine is used for the preparation of complexes 1 and 2. Variable temperature magnetic susceptibility measurement studies indicate there is a weak ferromagnetic interaction between the two copper(II) ions in 1 (J = +0.75 cm(-1)), while weak antiferromagnetic interaction is observed with J values -0.23 cm(-1) for 2. (c) 2007 Elsevier Ltd. All rights reserved.