Structural studies of copper(II) complexes derived from di-2-pyridyl-ketone, (py)2CO
摘要:
Reaction of ArSN=C(py)(2) [Ar = 2,4-dinitrophenyl, (O2N)(2)C6H3] with CuCl2 center dot 2H(2)O in DMF yielded the tetranuclear complex [Me2NH2][Cu4Cl6{py(2)CO(2)}{py(2)C(OH)O}] (1) through metal-catalysed hydrolysis of both DMF and the thiazyl chain. Notably direct reaction of dipyridylketone (py(2)CO) with CuCl2 center dot 2H(2)O in DMF yielded the mononuclear pseudo-octahedral complex [CuCl2(py(2)C(OH)(2))(DMF)]center dot DMF (2) in which the 1,1-gem diol, py(2)C(OH)(2) acts as a tripodal ligand. Heating of 2 in DMF/MeOH promoted aggregation and formation of the polymer [Cu2Cl3{py(2)(OMe)O}](infinity) (3). The structures of 1-3 were determined by X-ray diffraction. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.