13709-83-6Relevant academic research and scientific papers
Gas-phase measurements of the kinetics of BF2(+)-induced polymerization of olefinic monomers
Forte, Leonard,Lien, Min H.,Hopkinson, Alan C.,Bohme, Diethard K.
, p. 1576 - 1583 (2007/10/02)
The initial steps in the BF2(+)-induced polymerization of the monomers of ethylene, propylene, cis-2-butene, isobutene, and styrene have been observed in the gas phase at room temperature using the Selected-Ion Flow Tube (SIFT) technique.Rate constants and product distributions have been determined for the initiation of the polymerization in each case.All five initiation reactions were found to be rapid (k >/= 5.0*10-10 cm3 molecule-1 s-1).The primary product ions that propagate polymerization have been identified and sequential addition reactions have been followed in all five systems.For ethylene the energetics of the initial steps have been followed using ab initio molecular orbital theory.Reaction of BF2+ with the vapours of water and benzene have also been characterized. Key words: ion-induced polymerization; alkenes; kinetics; gas phase ion chemistry
Matrix isolation-mass spectroscopy study of the reaction of boron trifluoride with trimethylamine-aiane and trimethylamine-gallane
Shirk, Amy E.,Shirk, James S.
, p. 72 - 77 (2008/10/08)
The gas-phase reactions of BF3 with (CH3)3N·AlH3 and (CH3)3N·GaH3 were studied with a combination matrix isolation-infrared spectrometer-mass spectrometer apparatus. The initial reaction products were BF2H and N(CH3)3; no AlH3 or GaH3 was detected. The reaction is a halide-hydride exchange and not a Lewis acid displacement reaction. The previously reported reaction of BF3 with (CH3)3N·GaH3 to produce uncoordinated gallium hydride in both the gas and condensed phases was not observed. A reaction mechanism is proposed to account for the reactions in both phases.
Preparation and some reactions of difluoroborane
Coyle,Cooper,Ritter
, p. 1014 - 1020 (2008/10/08)
Difluoroborane is produced by the direct interaction of boron trifluoride with diborane in the gas phase at 100° or above. Pyrolysis of BF3-B2H6 mixtures at 250° for periods of 30 min to 1 hr, followed by rapid quenching,
