Twisted dinuclear Pd(II) complex with an exo-hexadentate ligand bearing bipyridine and carbamoly groups: Synthesis and structure
作者:Ock Keum Kwak、Jeum Jong Kim、Kil Sik Min、Jineun Kim、Bong Gon Kim
DOI:10.1016/j.inoche.2007.04.012
日期:2007.7
Dinuclear Pd(II) compound, [Pd-2(PMCB2-)Cl-2] center dot CH2Cl2 (1), has been prepared by the reaction of K-2[PdCl4] with exo-hexadentate ligand having amide groups (3,3'-bis[N-(2-pyridylmethyl)carbamoly]-2,2'-bipyridine, H2PMCB) in H2O/CH2Cl2. X-ray crystal structure of 1 indicates that one PMCB2- ligand binds two Pd(II) ions each having a distorted square planar structure. The bipyridine group of the PMCB2- ligand is involved in offset face-to-face pi-pi interactions, which gives rise to a 1D chain. The 1D chains are linked together via the C-H...O hydrogen bondings between a carbon atom of pyridine group and the oxygen of carbamoly group to generate a 2D network. Between the 2D networks there exist the herringbone pi-pi stackings, which results in a 3D supramolecular structure. (c) 2007 Elsevier B.V. All rights reserved.