Research Article: Tetra­bromidobis(dicyclo­hexyl­phosphane-κP)digallium(Ga—Ga)

Date Published: October 01, 2012

Publisher: International Union of Crystallography

Author(s): Dennis H. Mayo, Yang Peng, Peter Zavalij, Kit H. Bowen, Bryan W. Eichhorn.

http://doi.org/10.1107/S1600536812035982

Abstract

The title compound, a GaII dimer, [Ga2Br4(C12H23P)2], was synthesized by reaction of GaBr(THF)n (THF is tetra­hydro­furan) with dicyclo­hexyl­phosphine in toluene. At 150 K the crystallographically centrosymmetric molecule exhibits disorder in which one of the two independent cyclo­hexyl groups is modelled over two sites in a 62 (1):38 (1) ratio. In d6-benzene solution, the compound exhibits virtual C2h symmetry as determined by 1H NMR. The coordination environment of the GaII atom is distorted tetrahedral.

Partial Text

For references related to the synthesis of the ‘GaBr’ precursor and to cluster formation, see: Schnoeckel (2010 ▶); Steiner et al. (2004 ▶). For other Ga—Ga containing compounds, see: Baker et al. (2003 ▶) (the analogous digallium tetra­iodide compound); Uhl et al. (1989 ▶) [the first-reported Ga(II) dimer compound].

 

Source:

http://doi.org/10.1107/S1600536812035982