language: en

DOI: 10.1002/zaac.200700503

Two-Dimensional Monovalent Copper Halide Coordination Polymers Incorporating Anti-Conformation 3, 3-Bipyridine

Lindsey L. Johnston a , Andrew J. Ursini a , Nathan P. Oien a , Matthew P. Desciak b , Randy S. Rarig, Jr. c , Jon Zubieta c , and Robert L. LaDuca a, *
a East Lansing MI / USA,
Michigan State University, Lyman Briggs College and Department of Chemistry
b Wilkes-Barre, PA / USA,
King's College, Department of Chemistry and Physics
c Syracuse, NY / USA,
Syracuse University, Department of Chemistry

[Received November 6 th , 2007.]

Abstract. Hydrothermal treatment of aqueous mixtures of copper(II) halides and 3, 3-bipyridine (3, 3-bpy) has afforded the coordination polymers [CuCl(3, 3-bpy)] n (1) and [Cu 2 Br 2 (3, 3-bpy)] n (2), which were analyzed via single crystal X-ray diffraction, infrared spectroscopy, and elemental analysis. The structure of 1 consists of two-dimensional (2-D) layers constructed from the linkage of castellated one-dimensional (1-D) [CuCl] n stepped chains through anti-conformation 3, 3-bpy tethers. Compound 2 presents a related 2-D sheet motif, albeit built from infinite 1-D [Cu 2 Br 2 ] n ladders strutted by 3, 3-bpy ligands in anti conformation. In both cases neighboring 2-D sheets stack into 3-D via weak CH···halogen interactions.

Keywords: Hydrothermal synthesis; Copper; Halides; Coordination polymer; Bipyridine; Supramolecular interactions Introduction