Similarly, reaction of [Pt(Me)2( 2 -TMEDA)] with excess of the molecular zinc hydride [{(ArNCMe)2CH}Zn(H)] (Ar = 2,6-di-iso-propylphenyl, 2) afforded colourless crystals of Pt-Zn in 63% yield (Scheme 2). A quintet resonance was observed in the Pt NMR spectrum at  = -6079 ppm ( 1 J195Pt-1H = 772 Hz) and a diagnostic hydride resonance with Pt satellites in the H NMR spectrum at  = -6.05 ppm. In this case, small amounts of [{(ArNCMe)2CH}ZnPh] (Ar = 2,6-di-iso-propylphenyl) were observed during the formation of Pt-Zn confirming the role of the solvent as a source of hydride ligands. T1 relaxation times of Pt-Mg•TMEDA and Pt-Zn are long (0.6-0.7 s) and exclude the possibility of significant H---H interactions or dihydrogen character. A closely related species Ni-Mg has very recently been reported by Xu and coworkers.