Synthesis, structure, sorption and magnetic properties of Ni(II) and Cu(II) complexes with thiosemicarbazone of 2-hydroxybenzaldehyde, bridged by 4,4 '-bipyridine

摘要

(ML)(2)(bipy) complexes (LH2 = thiosemicarbazone of 2-hydroxybenzaldehyde, bipy = 4,4'-bipyridine, M = Ni(II), 1, or Cu(II), 2) were synthesized and characterized by X-ray crystallography. Compound 1 possessed porous structure due to peculiarities of crystal packing, whereas 2 formed infinite zig-zag chains with dense non-porous packing. It was shown that 1 absorbed 0.013 cm(3)/g of methanol vapor in two steps. Complex 1 was diamagnetic; for 2, the dependency of chi versus T could be interpreted by Bleaney-Bowers expression in 20-300 K temperature range (J = -6.8 cm(-1), g = 2.07). (C) 2006 Elsevier B.V. All rights reserved.