Amidinate-and Dithiolene-Based Silicon Complexes

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