摘要
By the reaction of cadmium chloride with a reduced Schiff base ligand （H2L= N-（4- carboxybenzyl）-glycine）, a novel Cd（Ⅱ） compound [Cd（HL）2]·4H2O （1） has been obtained. Single-crystal X-ray diffraction analysis reveals that it crystallizes in orthorhombic, space group Pbcn with a = 13.9788（8）, b = 24.4204（14）, c = 13.9580（8） A, V= 4764.8（5） A^3, Z = 8, Mr = 600.84, Dc = 1.675 g/cm^3,/z = 0.983 mm^-1, F（000） = 2448, S = 1.084, R = 0.0806 and wR = 0.1705 （I〉 2a（1））. It displays a 2D two-fold interpenetrating structure. The Cd（Ⅱ） ions are six-coordinated. The cross-linkage of Cd（Ⅱ） ions by the bridge of HL anions results in a [Cd（HL）2] layer. Every two [Cd（HL）2]n layers are penetrated with each other, resulting in a two-fold interpenetrating double-layer structure by π-π stacking interactions and hydrogen bonds. Such double-layers are further linked by hydrogen bonds into a supramolecular structure. Photoluminescent investigation shows that compound 1 displays strong emission in the purple region.
By the reaction of cadmium chloride with a reduced Schiff base ligand （H2L= N-（4- carboxybenzyl）-glycine）, a novel Cd（Ⅱ） compound [Cd（HL）2]·4H2O （1） has been obtained. Single-crystal X-ray diffraction analysis reveals that it crystallizes in orthorhombic, space group Pbcn with a = 13.9788（8）, b = 24.4204（14）, c = 13.9580（8） A, V= 4764.8（5） A^3, Z = 8, Mr = 600.84, Dc = 1.675 g/cm^3,/z = 0.983 mm^-1, F（000） = 2448, S = 1.084, R = 0.0806 and wR = 0.1705 （I〉 2a（1））. It displays a 2D two-fold interpenetrating structure. The Cd（Ⅱ） ions are six-coordinated. The cross-linkage of Cd（Ⅱ） ions by the bridge of HL anions results in a [Cd（HL）2] layer. Every two [Cd（HL）2]n layers are penetrated with each other, resulting in a two-fold interpenetrating double-layer structure by π-π stacking interactions and hydrogen bonds. Such double-layers are further linked by hydrogen bonds into a supramolecular structure. Photoluminescent investigation shows that compound 1 displays strong emission in the purple region.
基金
supported by the Research Program of Ningde Normal University (2011H103, 2011Y001 and 2011J001)
