Preparation of [LAl(μ‐S)2MCp2] (M=Ti, Zr) from the Structurally Characterized Lithium Complexes [{LAl(SH)[SLi(thf)2]}2] and [{LAl[(SLi)2(thf)3]}2]⋅2 THF

Sulfur bridges: The reactions of [LAl(SH)2] (L=HC(CMeNAr)2, Ar=2,6-iPr2C6H3) with LiN(SiMe3)2 in molar ratio 1:2 and 1:1, respectively, lead to species with the formula [{LAl[(SLi)2(thf)3]}2]⋅2 THF and [{LAl(SH)[SLi(thf)2]}2] in high yields. These lithium salts react further with [Cp2MCl2] (M=Ti, Zr; Cp=C5H5) to give unique heterobimetallic sulfides of composition [LAl(μ-S)2MCp2] (see structure; M=Ti).