Sulfur-Bridged Ta–M (M = Mo, Cr) Multinuclear Complexes Bearing a Four-Electron-Reduced Dinitrogen Ligand TakadaRyoichi HirotsuMasakazu NishiokaTakanori HashimotoHideki KinoshitaIsamu 2011 Sulfur-bridged Ta<sub>2</sub>M<sub>2</sub> complexes (M = Mo, Cr) containing a four-electron-reduced dinitrogen ligand, [Cp*Ta(μ-SC<sub>6</sub>H<sub>4</sub>Me)<sub>2</sub>M(CO)<sub>4</sub>]<sub>2</sub>(μ-η<sup>1</sup>:η<sup>1</sup>-N<sub>2</sub>) (Cp* = η<sup>5</sup>-C<sub>5</sub>Me<sub>5</sub>), were synthesized from the ditantalum complex [Cp*Ta(SC<sub>6</sub>H<sub>4</sub>Me)<sub>2</sub>]<sub>2</sub>(μ-η<sup>1</sup>:η<sup>1</sup>-N<sub>2</sub>), which was obtained by a one-pot reaction using [Cp*TaCl<sub>4</sub>], di-<i>p</i>-tolyl disulfide, and KC<sub>8</sub> under dinitrogen. Crystal structures of the Ta<sub>2</sub> and Ta<sub>2</sub>M<sub>2</sub> complexes revealed the analogy of the Ta–N–N–Ta moieties. This new route demonstrates the stability of the N<sub>2</sub><sup>4–</sup> ligand in M–S bond formation reactions, which are applicable to the synthesis of sulfur-bridged complexes bearing reduced dinitrogen species.