in chloroform-d1 slight excess of the diolefine was added to a CDCl3 coln. of Pt-complex, reaction was followed by (1)H NMR until equil. was reached; products were identified by their (1)H NMR spectra;

in chloroform-d1 slight excess of the diolefine was added to a CDCl3 coln. of Pt-complex, reaction was followed by (1)H NMR until equil. was reached; products were identified by their (1)H NMR spectra;

in chloroform-d1 slight excess of the diolefine was added to a CDCl3 coln. of Pt-complex, reaction was followed by (1)H NMR until equil. was reached; products were identified by their (1)H NMR spectra;

in chloroform-d1 slight excess of the diolefine was added to a CDCl3 coln. of Pt-complex, reaction was followed by (1)H NMR until equil. was reached; products were identified by their (1)H NMR spectra;