Amidinate- and Dithiolene-Based Silicon Complexes

Reactions of the amidinato-silylene chloride PhC(tBuN)2SiCl (1) with
imidazole-based
dithione dimer 2, lithium dithiolene radical 3, and dithiolate dimer 4 result in the synthesis of
a series of silicon complexes 5–7, respectively, containing both amidinato and dithiolene ligands. 7 is the first structurally characterized silicon(II) dithiolene
complex. The structural and bonding characteristics of 5–7 have been probed by both experimental and
theoretical methods.