13863-59-7Relevant academic research and scientific papers
Reaction of limonene with F2: Rate coefficient and products
Bedjanian, Yuri,Romanias, Manolis N.,Morin, Julien
, p. 10233 - 10239 (2015/02/19)
The kinetics of the reaction of limonene (C10H16) with F2 has been studied using a low pressure (P = 1 Torr) and a high pressure turbulent (P = 100 Torr) flow reactor coupled with an electron impact ionization and chemical ionization mass spectrometers, respectively: F2 + Limonene → products (1). The rate constant of the title reaction was determined under pseudo-first-order conditions by monitoring either limonene or F2 decay in excess of F2 or C10H16, respectively. The reaction rate constant, k1 = (1.15 ± 0.25) × 10-12 exp(160 ± 70)/T) was determined over the temperature range 278-360 K, independent of pressure between 1 (He) and 100 (N2) Torr. F atom and HF were found to be formed in reaction 1, with the yields of 0.60 ± 0.13 and 0.39 ± 0.09, respectively, independent of temperature in the range 296-355 K. (Graph Presented).
The reactions of positive and negative halogen ions with Cl2 and Br2
Spanel, P.,Tichy, M.,Smith, D.
, p. 8660 - 8666 (2007/10/02)
A selected ion flow tube study has been carried out at 300 K of the reactions of some atomic and molecular positive and negative halogen ions with Cl2 and Br2 from which the rate coefficients k and ion product distributions have been determined.For the energetic F+ ion reactions, dissociative charge transfer is the dominant process, while for the Cl+ ions, only nondissociative charge transfer occurs.For the less energetic Br+ and I+ reactions, dihalogen molecular ions are important products.All these positive ion reactions proceed quite efficiently, i.e., the k are appreciable fractions of kc, their respective collisional rate coefficients, except for the reactions of Cl2 with the lower energy ions of the spin-orbit triplet of I+, i.e., I+(3P1,0), for which k ca. 0.07kc, this being due to the endothermicities of the reactions.The molecular ion Cl2+ undergoes rapid nondissociative charge transfer with Br2, a process which is, of course, endothermic for the reaction of Br2+ with Cl2 and so no reaction is observed.The less-energetic atomic negative ion reactions proceed-via atom exchange-in which the atomic negative ion of the reactant molecular species and a dihalogen molecule are produced.For those reactions that are exothermic, the k are, within error, equal to (2/3)kc, implying that they proceed via complexes which separate statistically back to reactants (1/3) and forward to products (2/3).Both the Br- + Cl2 and Cl- + Br2 reactions are somewhat less efficient (i.e., k c), a result of the slight endothermicities of the reactions.Of the molecular negative ion reactions, electron transfer is the major process in the Cl2- reaction with Br2, whereas the reaction of Br2- with Cl2 proceeds relatively slowly producing the triatomic ion BrCl2-.
