41876-38-4Relevant academic research and scientific papers
Homolytic cleavage of C-Si bond of p-trimethylsilylmethylacetophenone upon stepwise two-photon excitation using two-color two-laser flash photolysis
Cai, Xichen,Sakamoto, Masanori,Hara, Michihiro,Inomata, Susumu,Yamaji, Minoru,Tojo, Sachiko,Kawai, Kiyohiko,Endo, Masayuki,Fujitsuka, Mamoru,Majima, Tetsuro
, p. 402 - 406 (2005)
C-Si bond cleavage of p-trimethylsilylmethylacetophenone(1) occurred in a higher triplet excited state (Tn), giving mainly p-acetylbenzyl radical with the transient absorption in the region of 295-360 nm, with a quantum yield of 0.046 ± 0.008 using the two-color two-laser photolysis techniques. In contrast, the C-Si bond cleavage of p- trimethylsilylmethylbenzophenone(2) was absent in the Tn state whose energy is larger than the C-Si bond cleavage energy. The results can explain existence of a bond cleavage crossing between potential surfaces of the T n state and a dissociative state of the C-Si bond for 1, but not for 2.
