catena-Poly[[[diaquabis[1,2-bis(pyridin-4-yl)diazene]copper(II)]-μ-1,2-bis(pyridin-4-yl)diazene] bis(perchlorate)]

• Main Authors: Ernesto Ballestero-Martínez, Cristian Saul Campos-Fernández, Victor Hugo Soto-Tellini, Simplicio Gonzalez-Montiel, Diego Martínez-Otero
• Format: Article
• Language: English
• Published: International Union of Crystallography 2013-06-01
• Series: Acta Crystallographica Section E
• Online Access: http://scripts.iucr.org/cgi-bin/paper?S1600536813012269
• ISSN: 1600-5368

In the title compound, {[Cu(C10H8N4)3(H2O)2](ClO4)2}n, the coordination environment of the cationic CuII atom is distorted octahedral, formed by pairs of symmetry-equivalent 1,2-bis(pyridin-4-yl)diazene ligands, bridging 1,2-bis(pyridin-4-yl)diazene ligands and two non-equivalent water molecules. The 1,2-bis(pyridin-4-yl)diazene molecules form polymeric chains parallel to [-101] via azo bonds which are situated about inversion centres. Since the CuII atom is situated on a twofold rotation axis, the monomeric unit has point symmetry 2. The perchlorate anions are disordered in a 0.536 (9):0.464 (9) ratio and are acceptors of water H atoms in medium–strong O—H...O hydrogen bonds with graph set R44(12). The water molecules, which are coordinated to the CuII atom and are hydrogen-bonded to the perchlorate anions, form columns parallel to [010]. A π–π interaction [centroid–centroid distance = 3.913 (2) Å] occurs between pyridine rings, and weak C—H...O interactions also occur.