
%0 Journal Article
%A Appleton, TG 
%A Hall, JR 
%T <sup>1</sup>H, <sup>13</sup>C and <sup>195</sup>Pt n.m.r. spectra of Trimethylplatinum(IV) Tetramers [PtMe<sub>3</sub>Z]<sub>4</sub>: effects of Pt-Z-Pt and long-range Pt-Z-Pt-C couplings
%J Australian Journal of Chemistry
%D 1980/11/01
%V 33
%N 11
%P 2387-2403
%K 
%R https://doi.org/10.1071/CH9802387
%U https://www.publish.csiro.au/paper/CH9802387 
%X 1H, 13C and 195Pt n.m.r. spectra have been obtained for [PtMe3(&#956;3-Z)]4 (Z = Cl, Br, I, OH, N3, SMe, SPh, and SCF3). The compounds with Z = SPh and SCF3 have not previously been prepared. In those tetramers which contain more than one 195Pt nucleus, and where 195Pt-Z-195Pt coupling is significant, 1H and 13C spectra cannot be interpreted as first order. Values of 2JPt-Z-Pt have been calculated from 13C spectra where Z = SMe, SPh, OH, and N3, and upper limits estimated for a number of other Z. When Z = SMe and OH, long-range 195Pt-Z-Pt-13C coupling is resolved. 2J(195Pt-S-13C) when Z = SMe and SCF3, and 3J(195Pt-S-C-19F) when Z = SCF3, are unexpectedly small. The 195Pt resonance frequency decreases in the order Z = OH > SPh > SMe > N3 &#8776; Cl > Br &#8776; SCF3 > I. To assist in analysing the spectra transition frequencies and intensities have been calculated for the AA'2X spectrum (available as an accessory publication). 
