22395-93-3Relevant articles and documents
Studies on BCl and on the exchange reaction of BCl3 with polyboron flourides
Pardoe, Jennifer A.J.,Norman, Nicholas C.,Timms, Peter L.
, p. 543 - 548 (2008/10/08)
Gaseous BCl has been prepared at low pressure by reaction of BCl3 with boron at 2000 °C or by decomposition of B2Cl4 using either an electric discharge or using flash thermolysis at 1150 °C, and then condensed at - 196 °C. Reasons are discussed why each method gives BCl capable of generating (Cl2B)3BCO when the condensate at - 196 °C is treated with CO, but B4Cl4 is only formed from BCl prepared from B2Cl4. The stepwise conversion of (F2B)3BCO to (Cl2B)3BCO by treatment with BCl3 has been followed by 11B NMR spectroscopy. Evidence from mass spectrometry and 11B NMR spectroscopy suggests that reaction of polyboron fluorides, particularly B8F12 and B10F12, with BCl3 yields a new form of B9Cl9 of, as yet, unknown structure which converts slowly to closo-B9Cl9 or closo-B8Cl8 depending on the solvent.
Kinetics of Some Gas-Phase Elementary Reactions of Boron Monofluoride
Light, G. C.,Herm, R. R.,Matsumoto, J. H.
, p. 5066 - 5074 (2007/10/02)
Rate coefficients for some elementary bimolecular reactons involving the molecule BF have been measured in a gas-phase flow tube facility.The BF + Cl2 reaction was studied from 295 to 881 K; the rate coefficient is temperature-independent with value of (1.4 +/- 0.2) X 10-11 cm3/(molecule s).Reaction of BF with O2 was studied between 675 and 1033 K; the inferred Arrhenius rate is 1.8 X 10-11 exp(-7240/Τ) cm3/(molecule s).Room temperature rate coefficients for BF + O and BF + NO2 were determined to be (1.8 +/- 0.4) X 10-10 and (2.1 +/- 0.3) X 10-13 cm3/(molecule s), respectively.Uncertainties quoted are 95percent confidence limits derived from random errors in individual measurements.Reaction of BF was undetectable upon mixing with H2O, HF, CO2, NO, N2O, SO2, or CH3Cl.Upper limits are given for rate coefficients for these reactions.Boron monofluoride proved to be less reactive than other simple boron species which have been studied recently, viz, boron atoms and boron monoxide.Results for BF are compared with available rate information for reactions of isoelectronic CO and N2.
