75535-87-4Relevant academic research and scientific papers
Silicon-Carbon Unsaturated Compounds. 20. Formation and Reactions of Disilacyclopropanes and Molecular Structure of 3-(Hydroxydimesitylsilyl)-1,1-dimesityl-2,2-bis(trimethylsilyl)-1-silacyclopropane
Ishikawa, Mitsuo,Matsuzawa, Shigeji,Sugisawa, Hiroshi,Yano, Fujio,Kamitori, Shigehiro,Higuchi, Taiichi
, p. 7706 - 7710 (1985)
Two stable disilacyclopropanes, 1,1,2,2-tetramesityl-3-- and 1,1,2,2-tetramesityl-3--1,2-disilacyclopropane (3 and 8), have been prepared by addition of dimesitylsilylene to 1,1-dimesityl-3-ph
Excited-State Behavior of Phenylethynyldisilanes: An Intramolecular Charge-Transfer Emission
Shizuka, Haruo,Okazaki, Katsuhiko,Tanaka, Hideaki,Tanaka, Masayuki,Ishikawa, Mitsuo,et. al
, p. 2057 - 2062 (1987)
Photochemical and photophysical properties of phenylethynyldisilanes in MP (methylcyclohexane/isopentane, 3:1 v/v) have been studied by means of picosecond and the nanosecond spectroscopy along with steady-state experiments.Intramolecular charge transfer in the excited singlet state of phenylethynyldisilanes occurs very rapidly (1(?,?*) state to the 1(2p?,3d?) CT state of the compounds is quite different from that of the usual TICT (twisted intramolecular charge transfer).Two decay components (fast and slaw) of the 1CT state are observed, which are ascribed to the intersystem crossing rates from 1CT to 3(?,?*), depending upon the molecular conformations of the 1CT state of phenylethynyldisilanes.The photochemical reaction to produce silacyclopropenes takes place efficiently via the 1CT state at room temperature, but not in MP glass at 77 K.
PHOTOLYSIS OF ORGANOPOLYSILANES. THE SYNTHESIS AND REACTIONS OF STABLE SILACYCLOPROPENES
Ishikawa, Mitsuo,Nishimura, Kunio,Sugisawa, Hiroshi,Kumada, Makoto
, p. 147 - 158 (2007/10/02)
Two stable silacyclopropenes, 1,1-dimensityl-2,3-bis(trimethylsilyl)-1-silacyclopropene and 1,1-dimesityl-2-phenyl-3-trimethylsilyl-1-silacyclopropene, have been prepared by photolysis of 1,1-dimesityl-1-trimethylsilylethynyltrimethyldisilane and 1,1-dimesityl-1-phenylethynyldisilane, respectively.It has been found that these silacyclopropenes are not affected by atmospheric oxygen, moisture and alcohols at room temperature. 1-Mesityl-1-methyl-2-phenyl-3-trimethylsilyl-1-silacyclopropene prepared by the photolyisis of 1-mesityl-1-phenylethynyltetramethyldisilane is rather stable toward atmospheric oxygen, but reacts readily with methanol in benzene to give a ring-opening methoxysilane.Photochemical and thermal behavior of these silacyclopropenes has been investigated.
