Synthesis, spectroscopy, and X-ray structure of the polymer catena-[bis(azido-N)-copper(II)--bis(2-benzimidazolyl)butane]
Source: Journal of Chemical Crystallography, Volume 30, Number 1, January 2000 , pp. 69-72(4)
Abstract:The title compound, catena-[bis(azido-N)-copper(II)-(bis(2-benzimidazolyl)butane), [Cu(C_18H_18N_4)(N_3)_2]_n, was obtained from the reaction of the ligand bis(2-benzimidazolyl)butane and Cu(N_3)_2. The x-ray crystal structure is reported. The compound crystallizes in the monoclinic space group P2_1/c with a = 8.2524(10), b = 12.765(5), c = 9.1125(15) Å, = 106.423(12)°, Z = 2. The Cu(II) ions are square-planar coordinated with trans-oriented end-on binding azido ligands. The structure is a polynuclear chain with the benzimidazole bridging at each end. In addition a N_(ligand)-H···N_(azido) H-bridge [N_(ligand)···N_(azido) = 2.994(7) Å] is present, resulting in a pseudo 2-dimensional lattice. The characteristic azido infrared vibrations are found at 2060 and 2077 cm^−1 (_as(N_3)) and 1284 and 1297 cm^−1 ((N_3)).
Document Type: Regular Paper
Affiliations: 1: Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden (Netherlands) 2: Bijvoet Center for Biomolecular Research, Sectie Kristal- en Structuurchemie, Utrecht University, Padualaan 8, 3584 CH Utrecht (Netherlands). Deceased 3: Bijvoet Center for Biomolecular Research, Sectie Kristal- en Structuurchemie, Utrecht University, Padualaan 8, 3584 CH Utrecht (Netherlands)
Publication date: January 2000