Hydridoorganostannylene coordination - Group 4 metallocene dichloride reduction in reaction with organodihydridostannate anions.

Organodihydridoelement anions of germanium and tin were reacted with metallocene dichlorides of Group4 metals Ti, Zr and Hf. The germate anion [Ar*GeH2](-) reacts with hafnocene dichloride under formation of the substitution product [Cp2Hf(GeH2Ar*)(2)]. Reaction of the organodihydridostannate with metallocene dichlorides affords the reduction products [Cp2M(SnHAr*)(2)] (M= Ti, Zr, Hf). Abstraction of a hydride substituent from the titanium bis(hydridoorganostannylene) complex results in formation of cation [Cp2M(SnAr*)(SnHAr*)](+) exhibiting a short Ti-Sn interaction. (Ar*= 2,6-Trip(2)C(6)H(3), Trip= 2,4,6-triisopropylphenyl).