460-96-8Relevant articles and documents
Perfluormethyl Element Ligands, XXIV; Organotin Compounds as Reagents, III. Cleavage Reactions of the Element-Element-Bond in Compounds of the Type RnE-ERm (R = CH3, CF3; E = P, As, S, Se, Te; n, m = 1, 2)
Dehnert, Peter,Grobe, Joseph,Van, Duc Le
, p. 48 - 54 (2007/10/02)
A systematic study of the cleavage of element-element bonds in compounds of the type RnE-ERm (R = CH3, CF3; E = P, As, S, Se, Te; n, m = 1, 2) by the group IV A element hydrides Me3M'H (M' = Si, Ge, Sn; Me = CH3) has been carried out.To evaluate the reaction pathway, for a number of compounds the attack of H2O, CH3OH, HBr and HI has been investigated.Possible reaction intermediates have been synthesized by independent routes and tested under comparable conditions. - Keywords: Organoelement-Element Compounds, Perfluoromethyl Derivatives, NMR Spectra
Phosphinopentaboranes
Burg, Anton B.,Heinen, Herbert
, p. 1021 - 1025 (2008/10/08)
Phosphine derivatives of the type R2PCl react with LiB5H8 in ether to form 2,3-μ-(CH3)2PB5H8 (mp 17°; bp estd 191°), 2,3-μ-CH3CF3PB5H8-A (mp 14°; 1 mm at 25°) which isomerizes irreversibly by an apparently first-order rate process to 2,3-μ-CH3CF3PB5H8-B (mp - 28°; 9 mm at 25°; bp estd 137°), and 1-(CF3)2PB5H8 (mp - 42°; bp estd 184°). The bridging vs. peak positions of phosphorus are proved by the B, F, and H nmr spectra and understood in terms of different phosphine-base strengths. The phosphorus nmr spectra show an interesting dectet for 1-(CF3)2PB5H8 but no resolution for the B-P-B bridged compounds. Both infrared and nmr results indicate weaker-than-normal terminal B-H bonds (with more than normal B2p character) adjacent to bridging P atoms. The CH3CF3PB5H8 isomers show no discernible B-F coupling, whereas 1-(CF3)2PB5H8 shows JB-F = 6.0 cps.