TY - JOUR
T1 - Zinc and cadmium coordination polymers assembled with 2,2′-bipyridine and bithiophenedicarboxylic acid
T2 - Effect of metal ions on the conformation of ligand
AU - Zhao, Jiao
AU - Shi, Xin
AU - Li, Guanna
AU - Wang, Xiuli
AU - Li, Can
AU - Yang, Qihua
PY - 2012/3/30
Y1 - 2012/3/30
N2 - Two novel metal-organic coordination polymers with the formulas [Zn(btdc)(2,2′-bpy)] n (1) and {[Cd 2(btdc) 2(2,2′-bpy)]·DMF} n (2) have been solvothermally synthesized by the assembly of mixed ligands, H 2btdc and 2,2′-bpy with Zn(NO 3) 2·6H 2O and Cd(NO 3) 2·4H 2O, respectively, where H 2btdc = 2,2′-bithiophene-5,5′-dicarboxylic acid, 2,2′-bpy = 2,2′-bipyridine, and DMF = N,N′-dimethylformamide. Complex 1 is composed with one-dimensional (1D) infinite zigzag polymeric coordination chains, which are further stacked into 3D supramolecular architecture by π-π stacking interaction. Complex 2 possesses 2D layers with the thickness about 1.2 nm, these layers forming a 3D network through π-π stacking interactions. In complex 1, the btdc ligand exists in stable trans conformation and the conformation of btdc ligand in complex 2 is of both trans and cis. Furthermore, these two complexes show enhanced fluorescent emission in comparison with H 2btdc ligand.
AB - Two novel metal-organic coordination polymers with the formulas [Zn(btdc)(2,2′-bpy)] n (1) and {[Cd 2(btdc) 2(2,2′-bpy)]·DMF} n (2) have been solvothermally synthesized by the assembly of mixed ligands, H 2btdc and 2,2′-bpy with Zn(NO 3) 2·6H 2O and Cd(NO 3) 2·4H 2O, respectively, where H 2btdc = 2,2′-bithiophene-5,5′-dicarboxylic acid, 2,2′-bpy = 2,2′-bipyridine, and DMF = N,N′-dimethylformamide. Complex 1 is composed with one-dimensional (1D) infinite zigzag polymeric coordination chains, which are further stacked into 3D supramolecular architecture by π-π stacking interaction. Complex 2 possesses 2D layers with the thickness about 1.2 nm, these layers forming a 3D network through π-π stacking interactions. In complex 1, the btdc ligand exists in stable trans conformation and the conformation of btdc ligand in complex 2 is of both trans and cis. Furthermore, these two complexes show enhanced fluorescent emission in comparison with H 2btdc ligand.
KW - Bithiophenedicarboxylic acid
KW - Conformation
KW - Luminescence
KW - Metal-organic coordination polymers
U2 - 10.1016/j.ica.2011.11.004
DO - 10.1016/j.ica.2011.11.004
M3 - Article
AN - SCOPUS:84857232324
SN - 0020-1693
VL - 383
SP - 185
EP - 189
JO - Inorganica Chimica Acta
JF - Inorganica Chimica Acta
ER -