The Reaction of Phosphorus Pentafluoride and Tetraalkyltin Compounds

Abstract

Alkyltetrafluorophosphoranes can be prepared in good yield by the room temperature reaction of phosphorus pentafluoride and tetraalkyltin compounds. Careful investigation of the stoichiometry of this reaction indicates that this reaction is not as straightforward as one might expect, however. In all of the reactions attempted some of the phosphorus was retained in the nonvolatile residue of the reaction. Evidence is presented which indicates that this residue contains a complex of the formula R3SnPF6, whose structure is probably similar to other known compounds RsSnX (X = CIO,•, BF4, AsFe, and SbF6).Alkyltetrafluorophosphoranes have been synthesized by a number of different methods. The method de-Contribution from the

Cationic Brønsted Acids for the Preparation of SnIV Salts: Synthesis and Characterisation of [Ph3Sn(OEt2)][H2N{B(C6F5)3}2],[Sn(NMe2)3(HNMe2)2][B(C6F5)4] and [Me3Sn(HNMe2)2][B(C6F5)4]

“…Whereas in the 119 Sn NMR spectrum the starting material Sn(NMe 2 ) 4 exhibited a resonance at δ -122.4 ppm, the peak for 6 was high-field shifted by about 190 ppm, to δ -311.4 ppm. The borate anion showed an 11 B NMR signal at δ -13.6 ppm, while the 19 F NMR resonances at δ -133.4, -160.6 and -166.1 ppm are typical of a noncoordinated borate. Compound 6 is highly soluble in diethyl ether, THF and dichloromethane, moderately soluble in toluene and insoluble in light petroleum.…”

Synthetic approaches to cationic silylene-, germylene-, and stannylene-transition metal complexes via halide ion abstraction

“…The solvent was then evaporated under vacuum, and the residue was extracted with 50 ml of ether. The filtered extract was next reduced in volume to 20 ml, and 10 ml of pentane was added.…”