1531587-39-9Relevant academic research and scientific papers
Reversible complexation of ethylene by a silylene under ambient conditions
Lips, Felicitas,Fettinger, James C.,Mansikkamaeki, Akseli,Tuononen, Heikki M.,Power, Philip P.
, p. 634 - 637 (2014)
Treatment of toluene solutions of the silylenes Si(SArMe6) 2 (ArMe6 = C6H3-2,6(C 6H2-2,4,6-Me3)2, 1) or Si(SAr Pri4)2 (ArPri4 = C6H 3-2,6(C6H3-2,6-Pri2) 2, 2) with excess ethylene gas affords the siliranes (Ar Me6S)2SiCH2CH2 (3) or (Ar Pri4S)2SiCH2CH2 (4). Silirane 4 evolves ethylene spontaneously at room temperature in toluene solution. A Van't Hoff analysis by variable-temperature 1H NMR spectroscopy showed that ΔGassn = -24.9(2.5) kJ mol-1 for 4. A computational study of the reaction mechanism using a model silylene Si(SPh)2 (Ph = C6H5) was in harmony with the Van't Hoff analysis, yielding ΔGassn = -24 kJ mol-1 and an activation energy ΔG? = 54 kJ mol-1.
