title: Di-μ-azido-κN:N-bis-{aqua-[bis-(1H-benzimidazol-2-ylmeth-yl)amine]-copper(II)} dinitrate.
abstract: In the centrosymmetric dinuclear title complex, [Cu(2)(N(3))(2)(C(16)H(15)N(5))(2)(H(2)O)(2)](NO(3))(2), the Cu(II) ion is in a distorted octa-hedral coordination environment with long axial Cu-N(azide) [2.821 (6) Å] and Cu-O(water) [2.747 (5) Å] bonds as a result of the Jahn-Teller effect. Two symmetry-related azide ligands bridge in μ(2)-modes giving a Cu⋯Cu distance of 3.533 (2) Å. In the crystal, N-H⋯O and O-H⋯O hydrogen bonds link the components into a three-dimensional network. In addition, there are weak inter-molecular C-H⋯N hydrogen bonds and π-π stacking inter-actions with centroid-centroid distances ranging from 3.562 (2) to 3.974 (2) Å.
authors.affiliation: Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079,  People's Republic of China.
authors.forename: Yuan-Yuan
authors.initials: YY
authors.lastname: Luo