A grid-like two-dimensional Ag(I)coordination polymer: poly[[[mu3-N'-(4-cyanobenzylidene)isonicotinohydrazide]silver(I)] perchlorate].
This study presents new coordinating modes of a Schiff base with three coordinating groups and an interesting two-dimensional framework based on two types of constructing units. In the title compound, {[Ag(C(14)H(10)N(4)O)]ClO(4)}(n), the Ag(I) ion is coordinated by three N atoms and one O atom from three different N'-(4-cyanobenzylidene)isonicotinohydrazide (L) ligands, forming a primary distorted square-planar coordination geometry. Two ligands each bridge two metal centres through one carbonitrile N atom in a monodentate mode and the hydrazide N and O atoms in a bidentate mode to form a small centrosymmetric (2+2)-Ag(2)L(2) ring as a principal constructing unit. The pyridyl N atoms from four ligands in four of these small rings coordinate to Ag atoms in adjacent rings to form a large hexanuclear silver grid. A two-dimensional framework of rectangular grids is constructed from these small rings and large grids. Two perchlorate anions are located in each large grid and are bound to the grid by N-H...O hydrogen bonding. Crosslinking between the layers is achieved through long Ag...O interactions between the perchlorate anions and Ag atoms in adjacent layers.
Niu
Cao Yuan
CY
College of Sciences, Henan Agricultural University, Zhengzhou 450002, People's Republic of China. niu_cy2000@yahoo.com.cn
Zheng
Xian Fu
XF
Bai
Ling Ling
LL
Wu
Xiao Ling
XL
Kou
Chun Hong
CH