Catena-Poly[[[di-aqua-bis-[1,2-bis-(pyridin-4-yl)diazene]copper(II)]-?-1,2-bis-(pyridin-4-yl)diazene] bis-(perchlorate)].

ABSTRACT: In the title compound, {[Cu(C10H8N4)3(H2O)2](ClO4)2} n , the coordination environment of the cationic Cu(II) atom is distorted octa-hedral, 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 mol-ecules. The 1,2-bis-(pyridin-4-yl)diazene mol-ecules form polymeric chains parallel to [-101] via azo bonds which are situated about inversion centres. Since the Cu(II) 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 R 4 (4)(12). The water mol-ecules, which are coordinated to the Cu(II) atom and are hydrogen-bonded to the perchlorate anions, form columns parallel to [010]. A ?-? inter-action [centroid-centroid distance = 3.913?(2)?Å] occurs between pyridine rings, and weak C-H?O inter-actions also occur.

SUBMITTER: Ballestero-Martinez E 

PROVIDER: S-EPMC3684881 | biostudies-other | 2013 Jun

REPOSITORIES: biostudies-other