Synthesis, Characterization, and Crystal Structure of a Tri-nuclear Cobalt(II) Cluster
作者:Wen-Kui Dong、Jian Yao、Yin-Xia Sun
DOI:10.1080/15533174.2010.538030
日期:2011.2.24
A new Co(II) cluster, [CoL(DMF)]2(OAc)2Co}center dot 2DMF (H2L = 4,4'-dichloro-2,2'-[(1,3-propylene)dioxybis (nitrilomethylidyne)]diphenol), has been synthesized and characterized by elemental analysis, IR spectrum, UV-Vis spectrum, and X-ray diffraction method. The results indicate that the Co(II) cluster consists of three Co(II) ions, two tetradentate (-L)2- units, two coordinated -acetate ions, two coordinated DMF, and two crystallizing DMF molecules. All the hexa-coordinated Co(II) ions of the Co(II) cluster have a slightly distorted octahedral geometry. The crystal packing of the Co(II) cluster shows that a notable feature of this structure resides in the formation of a novel 2D supramolecular structure through intermolecular C-H center dot center dot center dot O interaction and weak intramolecular C-H center dot center dot center dot(Ph) interaction along the b-axes.
Synthesis, crystal structure and spectroscopic behaviors of Co(II) and Cu(II) complexes with Salen-type bisoxime ligands
Two Salen-type ligands (H(2)L(1), 4,4'-dichloro-2,2'-[(1,3-propylene)dioxybis(nitrilomethylidyne)]diphenol and H(2)L(2), 4,4'-dinitro-2,2'-[ethylenedioxybis(nitrilomethylidyne)]diphenol) and their corresponding complexes ([CoL(1)(MeOH)](2)(OAc)(2)Co} center dot 2MeOH and [CuL(2)](2)) have been synthesized and characterized by element analyses, (1)H NMR, FT-IR and UV-Vis spectra, TG-DTA and single crystal X-ray crystallography. Crystallographic data suggests the octahedral geometry for Co(II) complex and square-pyramidal geometry for Cu(II) complex. Furthermore, the. fluorescence behavior of Cu(II) complex in DMSO is discussed. (C) 2008 Elsevier B. V. All rights reserved.
Structure of a new trinuclear nickel(II) complex with a salen-type bisoxime ligand
A new trinuclear Ni(II) complex [NiL(DMF)](2)(OAc)(2)Ni}center dot 2DMF (H2L = 4,4'-dichloro-2,2'-[(1,3-propylene)dioxybis(nitrilomethylidyne)]diphenol) is synthesized and characterized by elemental analyses, IR spectra, UV-Vis spectra and X-ray crystallography. The results show that the Ni(II) complex consists of three Ni(II) ions, two tetradentate (mu-L)(2-) units, two coordinated mu-acetate ions, two coordinated DMF molecules, and two crystallization DMF molecules. All hexacoordinated Ni(II) ions of the complex have a slightly distorted octahedral geometry. The crystal packing of the Ni(II) complex reveals a notable feature of this structure: the formation of an infinite supramolecular 2D layered structure by virtue of intermolecular C-HaEuro broken vertical bar O hydrogen bonding.