CRYSTAL STRUCTURE AND FLUORESCENT PROPERTIES OF A 2D CADMIUM COORDINATION POLYMER
X. Du, Y.Y. Wang, Y.Q. Zhao, G.H. Cui
Hebei United University, Tangshan, Hebei Province, P. R. China
Keywords: Cd(II), 1,3,5-benzenetricarboxylic acid, binodal(3,5)-connected, ПЂ-ПЂ stacking interactions
Abstract
A new 2D cadmium(II) coordination polymer {[Cd(MBD)(L)]×(H
2O)
2}
n (
1) (H
2MBD = 5-methoxycarbonyl-benzene-1,3-dicarboxylic acid, L = 1,3-bis(benzimidazol-l-yl)-2-propanol) is synthesized, in which the starting linker (benzene-1,3,5-tricarboxylic acid) undergoes selective monoesterification during the synthesis. In the structure of complex
1, each cadmium center is octahedrally coordinated by four O atoms from three carboxylate groups and two N of distinct L ligands. A detailed structural analysis reveales that compound
1 exhibits a unique 2D binodal (3,5)-connected (4
2.6
7.8)(4
2.6) topology structure. Furthermore, the 2D layer is extended into a 3D network through π-π stacking interactions. The solid-state fluorescence properties of
1 are investigated at room temperature.
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