The complexes [Pd(PPh2(6-R-C6H3-2-S))2] (R = H (1); R= SiMe3 (2)) have been found to exist in solution as an equilibrium cis/trans mixture, the cis complex being the major component in both cases. The use of a low polarity crystallisation solvent allows the isolation of pure cis-1. The crystals of cis-1 are monoclinic (P21/n) with a = 15.559(2), b = 9.5224(9), c= 22.563(3) Å and β = 91.91(1) °. The angles P-Pd-P of 100.57(3) °and S-Pd-S of 85.16(3) °deviate from the right angle to accommodate the bulky -PPh2 groups in the square planar geometry. The use of polar CH3CN as a crystallisation solvent allows the isolation of trans-2. (C) 2000 Elsevier Science S.A.
|Journal||Inorganic Chemistry Communications|
|Publication status||Published - 7 Oct 2000|
- Cis/trans isomerism
- Crystal structures
- Palladium complexes
- Phosphinothiol complexes