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Crystal Structure and Spectroscopic Properties of cis-beta-Diazido(1,4,7,11-tetraazaundecane)chromium(III) Bromide

Lookup NU author(s): Emeritus Professor Bill Clegg, Dr Ross Harrington

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Abstract

The new complex, cis-beta-[Cr(2,2,3-tet)(N-3)(2)]Br (2,2,3-tet = 1,4,7,11-tetraazaundecane), was prepared and its structure was determined by single-crystal X-ray diffraction. The chromium(III) atom is in a distorted octahedral environment coordinated by four nitrogen atoms of 2,2,3-tet and two azido ligands in a cis-beta arrangement, with bent Cr-N-3 linkages at the coordinating azide nitrogen atoms. The mean Cr-N(2,2,3-tet) and Cr-N(azide) bond lengths are 2.084(5) and 2.021(5) angstrom, respectively. The crystal structure is stabilized by ionic interactions, supported by N-H center dot center dot center dot N(azide) and N-H center dot center dot center dot Br hydrogen bonds. The IR and electronic spectroscopic properties are also discussed.


Publication metadata

Author(s): Choi JH, Clegg W, Harrington RW

Publication type: Article

Publication status: Published

Journal: Zeitschrift fuer Anorganische und Allgemeine Chemie

Year: 2011

Volume: 637

Issue: 5

Pages: 562-566

Print publication date: 23/12/2010

ISSN (print): 0044-2313

ISSN (electronic): 1521-3749

Publisher: Wiley - VCH Verlag GmbH & Co. KGaA

URL: http://dx.doi.org/10.1002/zaac.201000375

DOI: 10.1002/zaac.201000375


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