Synthesis and Investigation of a Soluble Distannene with no Trans-Bent Angle or Twisting in the Solid-State.

By treating KSiPr with Sn[N(SiMe)] the distannene Sn(TIPS) (TIPS=SiPr) is formed in a metathesis reaction. The crystal structure analysis of Sn(TIPS) reveals a planar arrangement of the substituents in the solid-state and hence the second planar alkene like distannene of its kind. Due to the TIPS substituents, Sn(TIPS) is well soluble in all commonly used organic solvents, opening the door for various analytics and reactivity studies.

Boradigermaallyl: (4+3) Cycloaddition-Initiated Boron Insertion into Benzene.

The 2π electron 1,3-dipole boradigermaallyl, valence-isoelectronic to an allyl cation, is synthesized from a bis(germylene). It reacts with benzene at room temperature by insertion of a boron atom into the benzene ring. Computational investigation of the mechanism shows the boradigermaallyl reacting with a benzene molecule in a concerted (4+3) or [π4s+π2s] cycloaddition reaction.

Hydridoorganostannylene Coordination: Group 4 Metallocene Dichloride Reduction in Reaction with Organodihydridostannate Anions.

Organodihydridoelement anions of germanium and tin were reacted with metallocene dichlorides of Group 4 metals Ti, Zr and Hf. The germate anion [Ar*GeH ] reacts with hafnocene dichloride under formation of the substitution product [Cp Hf(GeH Ar*) ]. Reaction of the organodihydridostannate with metallocene dichlorides affords the reduction products [Cp M(SnHAr*) ] (M=Ti, Zr, Hf).