Search Results - "Percival, Paul W"
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Free Radical Reactivity of a Phosphaalkene Explored Through Studies of Radical Isotopologues
Published in Angewandte Chemie International Edition (02-01-2019)“…Muonium (Mu), an H atom analogue, is employed to probe the addition of free radicals to the P=C bond of a phosphaalkene. Specifically, two unprecedented…”
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Free Radical Chemistry of Phosphasilenes
Published in Angewandte Chemie International Edition (07-09-2020)“…Understanding the characteristics of radicals formed from silicon‐containing heavy analogues of alkenes is of great importance for their application in radical…”
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Silicon Meets Cyclotron: Muon Spin Resonance of Organosilicon Radicals
Published in Chemistry : a European journal (21-07-2014)“…Muons, generated at a high‐powered cyclotron, can capture electrons to form muonium atoms. Muon spin resonance spectra can be recorded for organosilyl radicals…”
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Characterization of Free Radicals in Clathrate Hydrates of Furan, 2,3-Dihydrofuran, and 2,5-Dihydrofuran by Muon Spin Spectroscopy
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (03-11-2016)“…In addition to their importance as abundant hydrocarbon deposits in nature, clathrate hydrates are being studied as potential media for hydrogen and carbon…”
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Silyl Radical formed by Muonium Addition to a Silylene
Published in Angewandte Chemie (International ed.) (06-04-2010)“…Muonraker: Irradiation of the stable silylene N,N′‐bis(2,6‐diisopropylphenyl)‐1,3‐diaza‐2‐silacyclopent‐4‐en‐2‐ylidene with muons produced a radical that was…”
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Free Radicals Formed by H Atom Addition to Allenes as Determined by Muon Spin Spectroscopy
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (31-12-2020)“…Allyl and vinyl radicals are important intermediates in diverse areas of chemistry, ranging from combustion to synthesis. However, questions remain about the…”
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Free Radical Reactivity of a Phosphaalkene Explored Through Studies of Radical Isotopologues
Published in Angewandte Chemie (02-01-2019)“…Muonium (Mu), an H atom analogue, is employed to probe the addition of free radicals to the P=C bond of a phosphaalkene. Specifically, two unprecedented…”
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Reaction of Stable N‐Heterocyclic Silylenes and Germylenes with Muonium
Published in Chemistry : a European journal (24-08-2009)“…Very a‐Mu‐sing! Reaction of a germylene with muonium (Mu) yields a germyl radical, in direct analogy to Mu attack at the ylideneic center of the corresponding…”
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The Reaction of Muonium with Hydrogen Peroxide in Aqueous Solution
Published in Chemphyschem (02-11-2023)“…Rate constants for the reactions of muonium (Mu) (the ultralight isotope of the hydrogen atom) with H2O2 in H2O and D2O2 in D2O have been determined at various…”
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Probing Radical Addition to 1‐Phosphabutadienes by Employing Muonium as a “Light Isotope” of Hydrogen
Published in Chemistry : a European journal (08-01-2024)“…Understanding free radical addition to multiple bonds is important to elucidating the mechanistic details of addition polymerization reactions, albeit the…”
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Probing the Reactivity of a Stable Silene Using Muonium
Published in Angewandte Chemie (International ed.) (01-01-2008)“…Taking the silenic route: Addition of a hydrogen atom analogue, muonium (Mu), to stable silene 1 gives rise to two distinct radical species, 1‐CMu and 1‐SiMu,…”
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Investigation of H atom and free radical behaviour in clathrate hydrates of organic molecules
Published in Radiation physics and chemistry (Oxford, England : 1993) (01-03-2020)“…Clathrate hydrates are icy materials composed of a lattice of water molecules containing well-defined cavities which can accommodate small guest molecules…”
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Prediction of Rate Constants for Reactions of the Hydroxyl Radical in Water at High Temperatures and Pressures
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (01-05-2003)“…There is a need for accurate data on the rate constants of many reactions involved in the radiolysis of water at high temperature and pressure, to model…”
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Characterization of free radicals in clathrate hydrates of pyrrole, thiophene, and isoxazole by muon spin spectroscopy
Published in Canadian journal of chemistry (01-02-2018)“…Gas hydrates have long been of interest to the petrochemical industry, but there has been growing interest in potential applications for carbon dioxide…”
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Organic Free Radicals in Superheated Water Studied by Muon Spin Spectroscopy
Published in Journal of the American Chemical Society (05-10-2005)“…There is a pressing need to identify and monitor reaction intermediates in water at high temperatures and pressures, but conventional techniques have limited…”
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Organic Free Radicals in Clathrate Hydrates Investigated by Muon Spin Spectroscopy
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (20-02-2014)“…Very little is known about the behavior of free H atoms and small organic radicals inside clathrate hydrate structures despite the relevance of such species to…”
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H atom kinetics in superheated water studied by muon spin spectroscopy
Published in Radiation physics and chemistry (Oxford, England : 1993) (01-08-2007)“…It is possible to study H atom chemistry in aqueous systems over a wide range of conditions, from standard to supercritical, using the exotic atom muonium (Mu)…”
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Free Radical Reactivity of Mono- and Dichlorosilylene with Muonium
Published in Chemistry : a European journal (17-10-2011)“…The H atom analogue muonium (Mu) has been used to explore the free radical reactivity of two novel chlorosilylenes. Spectroscopic and computational…”
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Enolization of Acetone in Superheated Water Detected via Radical Formation
Published in Journal of the American Chemical Society (13-08-2003)“…Muoniated free radicals have been detected in muon-irradiated aqueous solutions of acetone at high temperatures and pressures. At temperatures below 250 °C,…”
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Free Radicals of N‑Donor-Stabilized Silicon(II) Compounds Probed by Muon Spin Spectroscopy
Published in Organometallics (27-07-2015)“…Transverse-field muon spin rotation (TF-μSR) spectra have been obtained for muoniated free radicals formed by positive muon irradiation of a series of…”
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