Zobrazeno 1 - 10 of 16 pro vyhledávání: '"R J Whitehead"'
1
Positron scattering by singly charged helium ions in the ground state
Autor: B H Bransden, C J Noble, R J Whitehead
Publikováno v: Journal of Physics B: Atomic, Molecular and Optical Physics. 34:2267-2279
A coupled channel approximation has been employed to calculate cross sections for positron collisions with He+(1s) in the energy ranges 0-40.8, 40.8-47 and 50-250 eV. In the lowest energy interval only elastic scattering is possible whereas in the in
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b4f6268b423a94c543fcdca76a51ca69
https://doi.org/10.1088/0953-4075/34/11/318
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2
Vinylogous Tetrathiafulvalene (TTF) π-Electron Donors and Derived Radical Cations: ESR Spectroscopic, Magnetic, and X-ray Structural Studies
Autor: Martin R. Bryce and, Adrian J. Moore, and Axel Lamprecht, Susanne Pfenninger, Brian K. Tanner and, Fabian Gerson, William Clegg, R. J. Whitehead
Publikováno v: Scopus-Elsevier
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The properties of new 2,2‘-ethanediylidene(1,3-dithiole) derivatives 5, 6, and 8−11 are reported. Cyclic voltammetric studies establish that they are efficient donor molecules, with the extended conjugation resulting in stabilization of dications
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4849832244773e3f03e7871bba353eb6
https://doi.org/10.1021/cm940376+
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3
Preparation and characterisation of the mixed 1,3,2,4-/1,2,3,5-dithiadiazolylium salts and related free radicals; [m- and [p-SNSNC–C6H4–CNSSN]x(x= 2+, ·+ or 2·)
Autor: R. J. Whitehead, Arthur J. Banister, Brian K. Tanner, William Clegg, Ian Lavender, Jeremy M. Rawson
Publikováno v: J. Chem. Soc., Dalton Trans.. :1421-1429
The salts [m- and [p-[graphic omitted]–C6H4–[graphic omitted]][AsF6]2 were prepared (in yields exceeding 90%) by the reaction of [NCC6H4[graphic omitted]][AsF6] with [SNS][AsF6] in liquid SO2 and were recrystallised as MeCN solvates. Partial and
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fccef613a2a75d9cb5d3d6f51077c544
https://doi.org/10.1039/dt9930001421
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5
ChemInform Abstract: Solid-State Rearrangement of Some 1,3,2,4-Dithiadiazoles to Their 1,2, 3,5 Analogues
Autor: Christine M. Aherne, R. J. Whitehead, Jeremy M. Rawson, Anthony W. Luke, Arthur J. Banister
Publikováno v: ChemInform. 23
A variety of 1,3,2,4-dithiadiazoles [m- and p-C6H4([graphic omitted])2 and 1,3,5-C6H3([graphic omitted])3] undergo solid-state rearrangement to their 1,2,3,5-dithiadiazole analogues. This isomerisation process has been examined using differential sca
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::225736c523f4e64c95fc49a0bd3a9a6a
https://doi.org/10.1002/chin.199231091
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7
Effect of mast cell products and histamine on the proliferative behaviour of human melanoma and carcinoma cells in vitro
Autor: L. C. Tetlow, R. J. Whitehead, D. E. Woolley, D. Eckley
Publikováno v: Agents and Actions. 38:C182-C184
The functional importance of mast cells in modifying tumour cell behaviour has long been recognised and recent evidence suggests that mast cell: tumour interactions contribute to the growth and development of specific cancers. We have used in vitro s
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::27b1aa2432454f42fa9828e99dc79640
https://doi.org/10.1007/bf01996453
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8
Laser-assisted formation of antihydrogen
Autor: J. F. McCann, Isao Shimamura, R. J. Whitehead
Publikováno v: Physical Review A. 64
Capture of slow antiprotons by atomic hydrogen and positronium is simulated by the classical trajectory Monte Carlo method. Statistically accurate cross sections for protonium and antihydrogen formation are obtained and the energy dependence of the p
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2baeaa33a7c11e5843425bb1dad336f6
https://doi.org/10.1103/physreva.64.023401
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10
Dalton communications. Convenient preparations of the mixed 1,3,2,4-/1,2,3,5-dithiadiazolylium salt [SNSNC–C6H4–CNSSN][AsF6]2and the first mixed free radical, p-[SNSNC–C6H4–CNSSN]2˙
Autor: R. J. Whitehead, Jeremy M. Rawson, Arthur J. Banister, Ian Lavender
Publikováno v: J. Chem. Soc., Dalton Trans.. :1449-1450
The salt [p-NCC6H4–[graphic omitted]]Cl {prepared by reaction of Li[p-NCC6H4C(NSiMe3)2] with SCl2} was converted into [p-NCC6H4–[graphic omitted]]AsF6(with AgAsF6) and then reacted with [SNS]AsF6 to provide [[graphic omitted]–C6H4–[graphic om
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7e0efa3487dee370df75b87b3e216075
https://doi.org/10.1039/dt9920001449
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