2-Anilinopyridinate of Cu(I) and adducts of 2-anilinopyridine and metal acetates.
摘要:
The adducts of M(OAc)(2).nH(2)O (M = Cu, Co, Ni, Zn) with 2-anilinopyridine, M(OAc)(2)(PhNHpy), have been synthesized and characterized. The X-ray crystal structure of Cu-2(mu-OAc)(4)(PhNHpy)(2) shows the dimer structure of Cu-2(mu-OAc)(4)(H2O)(2) with the PhNHpy ligand in the axial positions of the water molecules. It is antiferromagnetic (2J= =286 cm(-1)). Signals of the triplet state are observed in its EPR spectrum and the zero field splitting parameter (D=0.33 cm(-1)) has been calculated. The electronic spectra and the strong antiferromagnetism of the cobalt (2J = - 324 cm(-1)) and nickel (2J = - 382 cm(-1)) compounds allow to propose also a dimeric structure for them. By excess of ligand, in the anionic form, the Cu(I) compound Cu(PhNpy) was obtained for which a dinuclear structure with a lineal coordination in Cu(I) is proposed. (C) 2002 Elsevier Science Ltd. All rights reserved.