Received 14 September 2012
In the title compound, [Pd2Cl4(C8H6N4)]·C3H7NO, the two Pd2+ cations have a distorted square-planar coordination sphere and are bridged by a bis-bidentate 2,2'-bipyrimidine ligand. Two terminal chloride anions are also bonded to each of the Pd2+ cations. The dinuclear complex and the dimethylformamide solvate molecule lie on the intersection of a twofold rotation axis and a mirror plane, with disorder present in the solvate molecule. There is a slight distortion from the square-planar metal geometry, as indicated by the bite angles of 81.77 (13)° and 91.63 (5)°. The C and O atoms of the solvent molecule are disordered over two sets of sites of equal occupancy.
The title compound is structurally related to the mono-coordinated species reported by Hudgens et al. (1997). For background literature on homogenous catalyst models, see: Van Leeuwen (2004); Meij et al. (2005); Otto et al. (2003); Steyn et al. (1997). For related structures, see: Inagaki et al. (2007); Maekawa et al. (1994). The mono-coordinated platinum counterpart was reported by Kawakami et al. (2006). For the synthetic procedure, see: Boyle et al. (2004).
Data collection: APEX2 (Bruker, 2008); cell refinement: SAINT-Plus (Bruker, 2008); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg & Putz, 2005); software used to prepare material for publication: WinGX (Farrugia, 1999).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: GG2102 ).
Financial assistance from the University of the Free State, NRF(THRIP) and Sasol is gratefully acknowledged, while Theunis Muller is thanked for the data collection.
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