in acetone under inert gas; dropwise addn. of the isocyanide in acetone to a suspn. of the Pt complex in acetone in the presence of NaBF4 at room temp.; vigorous stirring for 1 h; solvent removed, residue dissolved in CH2Cl2; soln. filtrated, concd. to a small vol.; addn. of Et2O yields the solid; elem. anal.;