Terminal hydrochalcogenido and bridging selenido derivatives of magnesium supported by tris(3-p-tolylpyrazolyl)hydroborate ligation: the syntheses and structures of [Tpp-Tol]MgEH (E = S, Se) and {[Tpp-Tol]Mg}2Se

Abstract

The first structurally characterized monomeric hydrosulfido and hydroselenido complexes of magnesium, [Tp^p-Tol]MgEH (E = S, Se), are synthesized by the reaction of [Tp^p-Tol]MgMe with H₂S and H₂Se, respectively; the hydroselenido complex reacts with [Tp^p-Tol]MgMe to give the dinuclear bridging selenido complex {[Tp^p-Tol]Mg}₂Se.