Molybdenum Chalcogenobenzimidato Complexes:  Radical Synthesis and Nitrile Extrusion via β-EPh (E = S, Se, and Te) Elimination MendirattaArjun CumminsChristopher C. KryatovaOlga P. Rybak-AkimovaElena V. McDonoughJames E. HoffCarl D. 2003 Molybdenum chalcogenobenzimidates of formula (Ph[PhE]CN)Mo(N[<i>t</i>-Bu]Ar)<sub>3</sub> (Ar = 3,5-C<sub>6</sub>H<sub>3</sub>Me<sub>2</sub>) have been obtained by treatment of Mo(N[<i>t</i>-Bu]Ar)<sub>3</sub> sequentially with benzonitrile and 0.5 equiv of PhEEPh (E = S, Se, and Te). Molecular structure determinations have been carried out for the S and Se variants. The Te variant extrudes PhCN forming structurally characterized (PhTe)Mo(N[<i>t</i>-Bu]Ar)<sub>3</sub> with facility assessed via stopped-flow kinetic measurements, while the Se and S analogues exhibit increasing stability. Quantum chemical calculations and solution calorimetry have been employed as an aid to interpretation of the PhCN extrusion reaction.