Thermochemistry of metallic alkyls. Part 15.—Heats of combustion of trimethyl-isopropyl tin, trimethyl-t-butyl tin and tetra-isopropyl tin

Abstract

The heats of combustion at 20°C of crystalline Me₃Sn^tBu, and of liquid Me₃SnⁱPr and ⁱPr₄Sn have been measured using a conventional bomb calorimeter charged with O₂ at 40 atm pressure, from which the standard heats of formation (in kcal/mole) were derived: ΔH^°_f(Me₃Sn^tBu, c)=–28.96±1.05, ΔH^°_f(Me₃SnⁱPr, liq.)=–20.91±1.0, ΔH^°_f(ⁱPr₄Sn, liq.)=–44.81±1.3.