Jiajia Cheng, Shimin Wang, Zhan Shi
Nov 1, 2016
Citations
0
Influential Citations
22
Citations
Journal
Inorganica Chimica Acta
Abstract
Abstract Five new polymers based on 5-(pyridine-3-yl)pyrazole-3-carboxylic acid (H2ppca), namely, [Cd2(ppca)(bix)(SO4)]n (1), {[Cd(Hppca)2]·H2O}n (2), {[Mn(Hppca)2]·H2O}n (3), [Zn2(ppca)2]n (4) and [Cu(ppca)]n (5) have been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction, elemental analyses and IR spectroscopy. Structural analyses reveal that polymer 1 possesses a 2-fold interpenetrating three-dimensional (3D) framework. Polymers 2 and 3 display 4-connected 2D frameworks, while polymer 4 features a (3,3)-connected topology with the Schlafli symbol (4·8·10). 5 exhibits a 2D structure with the Schlafli symbol (4·82). Furthermore, the fluorescence properties of the five polymers are also investigated in the solid state, showing the fluorescence signal changes in comparing with that of free ligand mbbz. Polymer 5 with square pyramid geometry (τCu1, 0.069) implies that there is strong antiferromagnetic interactions between two adjacent Cu1C and Cu1, and the magnetic interactions are mainly transferred by the bridging N,N-triazole ligands.