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Reaction of potassium hydrotris(pyrazol-1-yl)borate ( KTp ) and  n -BuSnCl 3  at room temperature led to the quantitative formation of TpSn(Cl) 2 ( n -Bu) ( 1 ). Colorless single crystals were obtained from a mixture of toluene/dichloromethane and were characterized as TpSn(Cl) 2 ( n -Bu)·½ toluene. Complex  1  crystallizes in the triclinic  P 1̅ space group, with  Z =2,  a =8.0496(8) Å,  b =9.4867(9) Å,  c =14.2710(14) Å,  α =90.365(3)°,  β =104.479(3)°,  γ =95.066(3)°, and  V =1050.60(18) Å 3 . Its structure exhibits a piano stool conformation involving a distorted octahedral geometry around the central Sn(IV) atom. In the crystal and from a supramolecular point of view,  1  is organized in pairs according to a V-shaped arrangement implicating pyrazolyl rings and through weak intermolecular interactions ( π-π , C-H··· π , and C-H···Cl). The structural analysis of  1  was completed by infrared and solution NMR spectroscopy measurements as well as elemental analysis, which confirm the X-ray elucidation.

Organotin(IV) scorpionates – X-ray structure and crystal packing of TpSn(Cl) 2 ( n -Bu) [Tp=hydrotris(pyrazol-1-yl)borate]