Synthesis, structure, and reactions of the first stable dimercaptoborane

Article abstract of DOI:10.1021/om00010a007

The first stable dimercaptoborane, TbtB(SH)₂ (1), was synthesized by the sulfurization of the corresponding overcrowded lithium aryltrihydroborate bearing a 2,4,6-tris[bis(trimethylsilyl)methyl]phenyl (Tbt) group. Dilithiation of 1 followed by treatment with Cp₂-TiCl₂ resulted in the isolation of a novel metallacycle, 1,3,2,4-dithiaboratitanetane 2, as stable red crystals. Molecular structures of the novel organoboron compounds 1 and 2 were both determined by X-ray crystallographic analysis.