Hydrothermal Synthesis, Crystal Structure and Properties of a 2D Network of Cd(II) Coordination Polymers with Helical Chains

Abstract

Hydrothermal reaction of Cd(II) acetate with the bridging ligand m-H 4 bptc (m-H 4 bptc = biphenyl-2,3 ,3,4 -tetracarboxylic acid) yielded a new 2D metal-organic coordination polymer with helical chains in the solid state namelyThe helices are further connected through hydrogen bonds to give a threedimensional supramolecular network. The thermal stability of complex 1 was studied by thermogravimetric (TG) and differential thermal analysis (DTA). Compound 1 exhibits photoluminescence with an emission maximum at ca. 399 nm upon excitation at 360 nm.

Crystal structure of tetra[(2,6-dicarboxylato-2',6'-dicarboxy-1,1'- biphenyl)-(6,6'-dimethyl-2,2'-bipyridine)copper(II)] pentahydrate, [Cu(C16H8O8)(C12H12N2)]4 · 5H2O

“…On the other hand, dipyridine and its analogs as neutral linkers or chelating ligands are widely used as excellent auxiliary spacers in the construction of novel supramolecular compounds [7][8][9][10][11]. In these coordination polymers, supramolecular contacts (hydrogen bonding, p-p stacking,etc.)…”

Crystal structure of hexaaqua-bis(1,1'-biphenyl-2,2',6,6'-tetracarboxylic acid)cadmium(II) tetrahydrate, [Cd (H2O)6](C16H9O8)2 · 4H2O

“…Recently, as eries of multidimensional metal-organic coordination supramolecular complexes constructed from 1,1'-biphenyl-2,2',3,3'-tetracarboxylic acid (H 4 bptc) [ 2,3] and 1,1'-biphenyl-2,3',3,4'-tetracarboxylic acid (m-H 4 bptc) ligands have been reported [4,5]. H 4 bptc and m-H 4 bptc has proved to be agood candidate for the construction of distinct coordination polymers with high-dimensional networks and interesting properties because of its diverse coordination modes and high structural stability.…”