Cu-X-bpy (X = Cl, Br; bpy = 4,4‘-bipyridine) Coordination Polymers:  The Stoichiometric Control and Structural Relations of [Cu₂X₂(bpy)] and [CuBr(bpy)]

Abstract

By controlling stoichiometry, three Copper(I) containing coordination polymers [Cu2Cl2(bpy)] (I), [Cu2Br2(bpy)] (II), and [CuBr(bpy)] (III) (bpy = 4,4‘-bipyridine) have been synthesized in superheated water at 170 °C. The crystal structures of I and II are two-dimensional networks composed of Cu2X2 double chains bridged by 4,4‘-bpy molecules through the nitrogen sites. The structure of III is a three-dimensional interpenetrating network constructed by concatenated 2D sheets. TGA studies indicate that these compounds are thermally stable up to 220 °C.

Syntheses, Crystal Structures and Adsorption Properties of Ultramicroporous Coordination Polymers Constructed from Hexafluorosilicate Ions and Pyrazine

“…[45] Actually, the pH of the supernatant solution of 1c is 2.1, suggesting that high temperature promotes this pathway in our case. This mechanism also might be applicable for providing several Cu(I/II) mixed-valence compounds [46][47][48][49][50][51] and Cu I coordination polymers; [52][53][54][55][56][57] high temperatures with py-X-py-type ligands probably assist in the reduction of Cu II to Cu I .…”

An Unusual Organic–Inorganic Chain-like Hybrid Complex [(CuCl)2(o-phen)]∞ (o-phen=o-phenanthroline)

“…Up to date, the basic copper halide skeletons of these complexes generally exhibit several geometrical motifs: cyclic Cu 2 X 2 dimeric (9), cubane tetrameric (12), zigzag polymeric (12), and ''stair step'' oligomeric (9) structures. It is noteworthy that the introduction of new organic templating agents always leads to the dramatic structural change of the basic inorganic phases (3), which has well been exemplified by the reports of Zubieta et al (3,4,8) and Willett et al (2,14,15).…”

Crystal structure and surface photovoltage of a series of Ni(II) coordination supramolecular polymer

“…Moreover, it is one of important source of hydrogen bond. So the organic ligands with carboxylic group are usually selected as important organic ligands [9][10][11]. The Ni(II) complexes have attracted considerable attention in the field of bio-inorganic due to nickel is the necessary trace element in organisms.…”