and Pt L OD Cl where L ethylenediamine N N dimethylethylenediamine N N 39 dimethylethylenediamine and N N N 39 N 39 tetramethylethylenediamine were characterized mainly by IssPt and 39 H high and low field nuclear magnetic resonance The NMR spectra were measured in D O The dichloro com plexes showed nbsp }