Publication Details (including relevant citation information):
Acta Crystallographica, Section C: Crystal Structure Communications (2009), C65(6), m228-m230. Chiarella, Gina M.; Melgarejo, Doris Y.; Fackler, John P., Jr.
The title compd., [Cu4Cl6O(C5H9N3)3(NH3)], is a neutral conformationally chiral cluster which crystallizes under the conditions described in this paper as a racemic conglomerate. It contains four CuII atoms in a tetrahedral coordination with a central O atom lying on a crystallog. 3-fold axis. Six chloride anions bridge the four CuII atoms. Three CuII atoms are bound by an N atom of a monodentate 1,4,6-triazabicyclo[3.3.0]oct-4-ene (Htbo) ligand and the remaining CuII atom is bound by a terminal ammine ligand. The geometry at each Cu center is trigonal bipyramidal, produced by the bound N atom of Htbo or NH3, the O atom in the axial position, and three chloride ions in the equatorial plane. The chloride anions form an octahedron about the O center. The Cu-NH3 bond lies along the crystallog. 3-fold axis, along which the mols. are packed in a polar head-to-tail fashion. Crystallog. data are given.
Address (URL): http://scripts.iucr.org/cgi-bin/paper?S0108270109015054