in tetrahydrofuran under N2 or Ar; to a THF soln. of Pt-contg. compd. (0.05 mmol) was addedHCl (0.1 mmol); stirring at room temp. for 2 h; addn. of hexane; the complex was filtered off and dried under vac.; elem. anal.;

in tetrahydrofuran under N2 or Ar; to a THF soln. of Pt-contg. compd. (0.05 mmol) was addedCF3COOH (0.1 mmol); stirring at room temp. for 2 h; addn. of hexane; the complex was filtered off and dried under vac.; elem. anal.;

in tetrahydrofuran; benzene-d6 under N2 or Ar; by a react. of Pt-contg. compd. with a stoich. amt. of CH3COOH in a NMR tube; detd. by NMR spectra studies;