Poly[chlorido(μ3-1,2,4-triazolato)copper(II)]

✍ Scribed by Gao, Yu-Xiang ;Wang, Li-Bin ;Niu, Yan-Ling

• Publisher: International Union of Crystallography
• Year: 2007
• Tongue: English
• Weight: 990 KB
• Volume: 63
• Category: Article
• ISSN: 1600-5368
• DOI: 10.1107/s1600536807040007

✦ Synopsis

The title compound, [Cu(C 2 H 2 N 3 )Cl] n , has been prepared by hydrothermal reaction of CuCl 2 and 1,2,4-triazole. It is isostructural with its Mn II , Co II , Ni II and Zn II analogs. The Cu II atom is surrounded by three N atoms belonging to three different triazolate ligands and a Cl atom, and exhibits a slightly distorted tetrahedral coordination geometry. The triply bridging nature of the 1,2,4-triazolate ligand gives rise to a polymeric layer containing both binuclear and tetranuclear macrocyclic units. In the binuclear unit, two Cu II atoms are bridged by two nearly coplanar triazolate groups through the 1,2-positions, affording a six-membered ring around an inversion center. Each binuclear unit is further connected to four parallel units through the other four N atoms of the triazolate groups. Four adjacent units, which are pairwise parallel, afford 16-membered tetranuclear macrocyclic units in which the two nearest-neighbor Cu II atoms are bridged by a single triazolate ligand through the 1,4-positions.