The synthesis, IR and P-31 NMR spectra of the complexes of various N-aryltr
iphenylphosphinimines with some mercury dihalides as well as the correspond
ing phosphonium salts are reported. It is shown by an X-ray crystal structu
re analysis of the complex of the unsubstituted phosphinimine with HgCl2 th
at in the solid state these complexes form dimers via two Hg ...mu(2)-Cl ..
. Hg bridges.