claire.vallance@chem.ox.ac.uk. Get the latest public health information from CDC: https://www.coronavirus.gov. 2016 Jun 28;144(24):244312. doi: 10.1063/1.4954373. Time-of-flight mass spectra and velocity-map images have been acquired for all fragment ions and for ground (Br) and spin–orbit excited (Br*) bromine atom products, allowing multiple fragmentation pathways to be investigated. Temperature-programmed desorption measurements indicate that this species is molecularly adsorbed with a binding energy of 0.43 eV. Kinetic energy release distribution in the fragmentation of energy-selected vinyl and ethyl bromide ions. AB - The photodissociation dynamics of ethyl bromide and ethyl iodide cations (C2H5Br+ and C2H5I+) have been studied. Fetching data from CrossRef. citation, Update/Correction/Removal Finally, both ethyl halide cations also show evidence of a minor C-C bond fission process to form CH2X+ + CH3 products. Fragmentation dynamics of the ethyl bromide and ethyl iodide cations: a velocity-map imaging study. Finally, both ethyl halide cations also show evidence of a minor C-C bond fission process to form CH2X(+) + CH3 products. The observed C2H3+ + H-2 + Br product channel is thought to arise via unimolecular decay of highly internally excited C2H5+ products formed following radiationless transfer from the initial excited state populated by photon absorption. The observed C2H3+ + H2 + Br product channel is thought to arise via unimolecular decay of highly internally excited C2H5+ products formed following radiationless transfer from the initial excited state populated by photon absorption. 2014, 16 (5) , 2167-2178. Osgood Jr. CCl4 chemistry on the magnetite selvedge of single-crystal hematite: competitive surface reactions. N. Camillone, K. A. Khan, P. J. Lasky, L. Wu, J. E. Moryl, R. M. Osgood. Finally, both ethyl halide cations also show evidence of a minor C-C bond fission process to form CH2X+ + CH3 products. The photodissociation dynamics of ethyl bromide and ethyl iodide cations (C2H5Br+ and C2H5I+) … K. A. Khan, N. Camillone, R. M. Osgood. Chloromethane surface chemistry on Fe3O4(111)–(2×2): A thermal desorption spectrometry comparison of CCl4, CBr2Cl2, and CH2Cl2. K. Adib, N. Camillone III, J.P. Fitts, K.T. Analysis of the velocity-map images indicates that photoexcited C2H5Br(+) cations undergo prompt C-Br bond fission to form predominantly C2H5(+) + Br* products with a near-limiting 'parallel' recoil velocity distribution. Instructions for using Copyright Clearance Center page for details. Your Mendeley pairing has expired. Photoinitiated electron transfer to selected physisorbed alkyl bromides: The effects of alkyl chain length on dissociation cross sections. The experimental studies are complemented by spin–orbit resolved ab initio calculations of cuts through the potential energy surfaces (along the RC–Br/I stretch coordinate) for the ground and first few excited states of the respective cations. Finally, both ethyl halide cations also show evidence of a minor C–C bond fission process to form CH2X+ + CH3 products. formally request permission using Copyright Clearance Center. The experimental studies are complemented by spin–orbit resolved ab initio calculations of cuts through the potential energy surfaces (along the RC–Br/I stretch coordinate) for the ground and first few excited states of the respective cations. Fragmentation dynamics of the ethyl bromide and ethyl iodide cations: a velocity-map imaging study. Reproduced material should be attributed as follows: If the material has been adapted instead of reproduced from the original RSC publication Ethyl halide cations were formed through vacuum ultraviolet (VUV) photoionization of the respective neutral parent molecules at 118.2 nm, and were photolysed at a number of ultraviolet (UV) photol Imaging molecular dynamics journal = "Physical Chemistry Chemical Physics". The observed C2H3+ + H-2 + Br product channel is thought to arise via unimolecular decay of highly internally excited C2H5+ products formed following radiationless transfer from the initial excited state populated by photon absorption. After photoinduced C−Br bond cleavage two channels for ethyl fragments ejected are observed in the TOF:  one resulting from direct ejection along the C−Br bond with a kinetic energy that varies from 0.6 to 1.1 eV, depending upon incident excitation wavelength, and the other, resulting from transient scattering from the surface potential energy well with a kinetic energy of 0.4 eV. Ethyl halide cations were formed through vacuum ultraviolet (VUV) photoionization of the respective neutral parent molecules at 118.2 nm, and were photolysed at a number of ultraviolet (UV) photolysis wavelengths, including 355 nm and wavelengths in the range from 236 to 266 nm. These metrics are regularly updated to reflect usage leading up to the last few days. Angle- and mass-resolved time-of-flight (TOF) measurements are used to probe the photodynamics and molecular orientation of C2H5Br on GaAs(110). Request. The experimental studies are complemented by spin-orbit resolved ab initio calculations of cuts through the potential energy surfaces (along the RC-Br/I stretch coordinate) for the ground and first few excited states of the respective cations. 14 publications. This article is cited by HX (X = Br, I) elimination from the highly internally excited C2H5X+ cation is deemed the most probable route to forming the C2H4+ fragment ions observed from both cations. Broadly similar behaviour is observed in the case of C2H5I+, along with an additional energetically accessible C-I bond fission channel to form C2H5 + I+ products. T1 - Fragmentation dynamics of the ethyl bromide and ethyl iodide cations: a velocity-map imaging study. DOI: 10.1039/C3CP53970A. Fragmentation dynamics of the ethyl bromide and ethyl iodide cations: a velocity-map imaging study Sara H. Gardinera, Tolga N.V. Karsilib, M. Laura Lipciuc a, Edward Wilman , Michael N.R.  |  Please note: If you switch to a different device, you may be asked to login again with only your ACS ID. Analysis of the velocity-map images indicates that photoexcited C2H5Br+ cations undergo prompt C–Br bond fission to form predominantly C2H5+ + Br* products with a near-limiting ‘parallel’ recoil velocity distribution. Time-of-flight mass spectra and velocity-map images have been acquired for all fragment ions and for ground (Br) and spin–orbit excited (Br*) bromine atom products, allowing multiple fragmentation pathways to be investigated. For this reason, the function is not plotted at low energies. Analysis of the velocity-map images indicates that photoexcited C2H5Br+ cations undergo prompt C-Br bond fission to form predominantly C2H5+ + Br* products with a near-limiting ` parallel' recoil velocity distribution. SH Gardiner, TN Karsili, ML Lipciuc, E Wilman, MN Ashfold and C Vallance, Full Broadly similar behaviour is observed in the case of C2H5I+, along with an additional energetically accessible C-I bond fission channel to form C2H5 + I+ products. Discover our research outputs and cite our work. The Journal of Physical Chemistry A 2010 , 114 (20) , … The photodissociation dynamics of ethyl bromide … The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Sage AG, Oliver TA, King GA, Murdock D, Harvey JN, Ashfold MN. Rim, G.W. The photodissociation dynamics of ethyl bromide and ethyl iodide cations (C2H5Br+ and C2H5I+) have been studied.

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