4,4′-bithiazoles as ligands: Crystal and molecular structure of bis(O,O′-nitrato)(2,2′-diphenyl-4,4′-bithiazole)copper(II) (two polymorphs)

S.A. Asghar-Torabi, F. Jamali, George Koutsantonis, A. Morsali, Brian Skelton, Allan White

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A low-temperature single-crystal X-ray structure determination of the 1 : 1 adduct of copper(II) nitrate with 2,2'-diphenyl-4,4'-bithiazole (L) shows it to be a molecular complex with L behaving as a symmetrical N, N' chelate, and the nitrate groups as unsymmetrical O,O' chelates: [LCu(O2NO)(2)]. Two polymorphs, both monoclinic P2(1)/c, have been obtained from acetonitrile ('alpha') and methanol ('beta'), respectively, with one molecule, devoid of crystallographic symmetry, in the asymmetric unit of each structure. The copper environments are distorted planar four-coordinate, cis-N2CuO2 (Cu - N 2.011(1), 1.973(1), Cu-O 1.995(1), 1.962(1) Angstrom), 'in-plane' angle sum Sigma 369.(5degrees), with longer trans, axial contacts (Cu - O 2.455(1), 2.458(2) Angstrom) for the alpha-form; respective values are 1.995(5), 1.991(4), 1.997(4), 1.973(3) Angstrom, 360.(4degrees), 2.500(4), and 2.396(4) Angstrom for the beta-form.
Original languageEnglish
Pages (from-to)949-952
JournalAustralian Journal of Chemistry
Volume56
Issue number9
DOIs
Publication statusPublished - 2003

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