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D. Sturmayr, U. Schubert:
"Ab-initio Calculations of T-shaped Phosphine-Platinum(II) Complexes";
Monatshefte für Chemie, 134 (2003), 791 - 795.

The geometries and total energies of several T-shaped platinum(II) complexes of the type (H_3P)PtXY (X, Y=Cl, CH₃, SiH₃, Si(OH)₃) were calculated by ab-initio methods. In the most stable isomer, the ligand with the smallest trans influence is trans to the PH₃ ligand. The trans influence increases in the order Cl < CH₃ < SiH₃ < Si(OH)₃.