title: trans-Bis(2,2-diphenylethylamine-kappaN)bis(5,5-diphenylhydantoinato-kappaN3)copper(II) and its chloroform disolvate.
abstract: The crystal structures of the title compounds, [Cu(C15H11N2O2)2(C14H15N)2] and [Cu(C15H11N2O2)2(C14H15N)2].2CHCl3, respectively, have been determined. The red disolvate complex affords a square-planar CuN4 coordination environment in which the CuII atom lies on a centre of symmetry. The blue solvent-free complex affords a distorted square-pyramidal CuN4O coordination environment and adjacent molecules form centrosymmetric dimers. A comparison of the different crystal structures focuses on the role of the solvent molecules in supramolecular assemblies of the copper(II) complexes.
authors.affiliation: Department of Chemistry, Faculty of Science and Technology, Keio University, Kohoku-ku, Yokohama 223-8522, Japan. akitsu@chem.keio.ac.jp
authors.forename: Takashiro
authors.initials: T
authors.lastname: Akitsu
authors.forename: Yasuaki
authors.initials: Y
authors.lastname: Einaga