79-27-6Relevant articles and documents
The reaction of SF5Br with select 1,2-dihaloethylenes
Winter, Rolf Walter,Gard, Gary L.
, p. 1041 - 1043 (2008)
SF5Br reacts with 1,2-haloethylenes (F, Cl, Br) in distinct ways. In the case of F- and Cl-olefins, the expected addition occurs while with 1,2-dibromoethylene a metathetical reaction yielding in a clean reaction a 1:1 mixture of SF5CH{double bond, long}CHBr and CHBr2CHBr2 is found. The mechanism for this reaction is discussed.
Laser Pulse Photolysis of 7-Silanorbornadiene in Solution: Experimental and AM1 Studies of Complexation between Silylenes and CHBr3
Taraban, Marc B.,Plyusnin, Victor F.,Volkova, Olga S.,Grivin, Vyacheslav P.,Leshina, Tatyana V.,et al.
, p. 14719 - 14725 (2007/10/02)
The quantum yield (0.95 +/- 0.1) for the decomposition of 7,7-dimethyl-1,4,5,6-tetraphenyl-2,3-benzo-7-silanorbornadiene (Ib) in hexane at room temperature has been determined by the laser pulse photolysis technique.Reaction rate constants of the generated dimethylsilylene with bromoform (4.4 * 107 M-1 s-1) and Ib (5.7 * 109 M-1 s-1) have been measured.It is suggested that the reaction of Me2Si: with CHBr3 occurs via the formation of an intermediate complex (λmax = 338 nm, ε =1280 M-1 cm-1).The bimolecular rate constant for decay of the complex (2k = 1.61 * 109 M-1 s-1) has also been estimated.Semi-empirical PM3 calculations of the model reaction between the singlet SiH2 and CHBr3 show the formation at the first step of the reaction of a donor-acceptor complex stabilized by interactions between a vacant p-AO of SiH2 and a lone pair of one of the Br atoms.Such a complex should be rather stable both toward dissociation into the starting reagents (E = 23.3 kcal/mol) and further rearrangement into the insertion product, Br(H2)SiCHBr2 (E = 22.3 kcal/mol).
HOMOLYTIC TRANSFORMATIONS OF 1,3-OXATHIOLANES IN THE PRESENCE OF POLYHALOMETHANES
Batyrbaev, N. A.,Zorin, V. V.,Zlotskii, S. S.,Rakhmankulov, D. L.
, p. 1160 - 1161 (2007/10/02)
-