Thermolysereaktionen der donorfreien Silanimine tBu_2Si=N-SiRtBu_2 (R = tBu, Ph)Thermolysis Reactions of Donor-free Silanimines tBu_2Si=N-SiRtBu_2 (R tBu, Ph)

摘要

The donor-free silanimines tBu_2Si=N-SiRtBu_2 (R = tBu, Ph), which are prepared from tBu_2CISiN_3 and NaSiRtBu_2 at -78 °C in Bu_2O, decompose in benzene at room temperature with the formation of isobutene. Products of ene reactions of isobutene and tBu_2Si=N-SiRtBu_2 (R = tBu, Ph) are formed. X-Ray quality crystals of H_2C=C(CH_2SitBu_2-NH-SiPhtBu_2)_2 (monoclinic, space group C2/c., Z = 4) were grown from a benzene solution at ambient temperature, whereas single crystals of H_2C=C(CH_2SitBu_2-NH-SitBu_3)_2 (monoclinic, space group P2_1, Z = 2) were obtained by recrystallization from THF.