Search Results - "Welch, Alan"

Bridges and Vertices in Heteroboranes by Macgregor, Stuart A, Welch, Alan J

“…A number of (hetero)boranes are known in which a main group atom 'bridges' a B-B connectivity in the open face, and in such species has previously been…”
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What Can We Learn from the Crystal Structures of Metallacarboranes? by Welch, Alan

“…The determination of the molecular structures of metallacarboranes by X-ray diffraction remains critical to the development of the field, in some cases being…”
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Arsenic in the environment: Biology and Chemistry by Bhattacharya, Prosun, Welch, Alan H., Stollenwerk, Kenneth G., McLaughlin, Mike J., Bundschuh, Jochen, Panaullah, G.

“…Arsenic (As) distribution and toxicology in the environment is a serious issue, with millions of individuals worldwide being affected by As toxicosis. Sources…”
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Bis(phosphine)hydridorhodacarborane Derivatives of 1,1′-Bis(ortho-carborane) and Their Catalysis of Alkene Isomerization and the Hydrosilylation of Acetophenone by Chan, Antony P.Y, Parkinson, John A, Rosair, Georgina M, Welch, Alan J

“…Deprotonation of [7-(1′-closo-1′,2′-C2B10H11)-nido-7,8-C2B9H11]− and reaction with [Rh­(PPh3)3Cl] results in isomerization of the metalated cage and the…”
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Do Gold(III) Complexes Form Hydrogen Bonds? An Exploration of Au III Dicarboranyl Chemistry by Chambrier, Isabelle, Hughes, David L, Jeans, Rebekah J, Welch, Alan J, Budzelaar, Peter H M, Bochmann, Manfred

“…The reaction of 1,1'-Li [(2,2'-C B H ) ] with the cyclometallated gold(III) complex (C^N)AuCl afforded the first examples of gold(III) dicarboranyl complexes…”
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Exopolyhedral Ligand Orientation Controls Diastereoisomer in Mixed-Metal Bis(carboranes) by Chan, Antony P Y, Rosair, Georgina M, Welch, Alan J

“…Heterobimetallic derivatives of a bis(carborane), [μ -(1',3'-3'-Cl-3'-PPh - -3',1',2'-RhC B H )-2-( -cymene)- -2,1,8-RuC B H ] ( ) and [μ -(1',3'-3'-Cl-3'-PPh…”
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On the Basicity of Carboranylphosphines by Benton, Amanda, Durand, Derek J, Copeland, Zachariah, Watson, James D, Fey, Natalie, Mansell, Stephen M, Rosair, Georgina M, Welch, Alan J

“…Three new carboranylphosphines, [1-(1′-closo-1′,7′-C2B10H11)-7-PPh2-closo-1,7-C2B10H10], [1-(1′–7′-PPh2-closo-1′,7′-C2B10H10)-7-PPh2-closo-1,7-C2B10H10], and…”
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Carborane Substituents Promote Direct Electrophilic Insertion over Reduction-Metalation Reactions by Man, Wing Y., Ellis, David, Rosair, Georgina M., Welch, Alan J.

“…Two‐electron reduction of 1,1′‐bis(o‐carborane) followed by reaction with [Ru(η‐mes)Cl2]2 affords…”
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Heterometalation of 1,1′-Bis(ortho-carborane) by Chan, Antony P. Y, Rosair, Georgina M, Welch, Alan J

“…Deboronation of [8-(1′-closo-1′,2′-C2B10H11)-closo-2,1,8-MC2B9H10] affords diastereoisomeric mixtures of [8-(7′-nido-7′,8′-C2B9H11)-closo-2,1,8-MC2B9H10]−…”
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Room-Temperature C----C Bond Cleavage of an Arene by a Metallacarborane by Ellis, David, McKay, David, Macgregor, Stuart A, Rosair, Georgina M, Welch, Alan J

“…On the fly: Reduction of 1,1′‐bis(o‐carborane) and subsequent reaction with a source of {Ru(p‐cymene)}2+ fragments yields a fly‐over bridge species resulting…”
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Arene–Ruthenium Complexes of 1,1′-Bis(ortho-carborane): Synthesis, Characterization, and Catalysis by Jeans, Rebekah J, Chan, Antony P. Y, Riley, Laura E, Taylor, James, Rosair, Georgina M, Welch, Alan J, Sivaev, Igor B

“…Deprotonation of 1,1′-bis­(ortho-carborane) with n BuLi in THF followed by reaction with [RuCl2(p-cymene)]2 affords, in addition to the known compound…”
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Exploiting the Electronic Tuneability of Carboranes as Supports for Frustrated Lewis Pairs by Benton, Amanda, Copeland, Zachariah, Mansell, Stephen M, Rosair, Georgina M, Welch, Alan J

“…The first example of a carborane with a catecholborolyl substituent, [1-Bcat-2-Ph- -1,2-C₂B H ] ( ), has been prepared and characterized and shown to act as…”
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Do Gold(III) Complexes Form Hydrogen Bonds? An Exploration of AuIII Dicarboranyl Chemistry by Chambrier, Isabelle, Hughes, David L., Jeans, Rebekah J., Welch, Alan J., Budzelaar, Peter H. M., Bochmann, Manfred

“…The reaction of 1,1′‐Li2[(2,2′‐C2B10H10)2] with the cyclometallated gold(III) complex (C^N)AuCl2 afforded the first examples of gold(III) dicarboranyl…”
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Arsenic attenuation by oxidized aquifer sediments in Bangladesh by Stollenwerk, Kenneth G., Breit, George N., Welch, Alan H., Yount, James C., Whitney, John W., Foster, Andrea L., Uddin, M. Nehal, Majumder, Ratan K., Ahmed, Nasir

“…Recognition of arsenic (As) contamination of shallow fluvio-deltaic aquifers in the Bengal Basin has resulted in increasing exploitation of groundwater from…”
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How to Make 8,1,2-closo-MC2B9 Metallacarboranes by Man, Wing Y., Zlatogorsky, Sergey, Tricas, Hugo, Ellis, David, Rosair, Georgina M., Welch, Alan J.

“…Three examples of the rare 8,1,2‐closo‐MC2B9 isomeric form of an icosahedral metallacarborane have been isolated as unexpected trace products in reactions…”
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14-Vertex Heteroboranes with 14 Skeletal Electron Pairs: An Experimental and Computational Study by Robertson, Alasdair P. M., Beattie, Nicholas A., Scott, Greig, Man, Wing Y., Jones, John J., Macgregor, Stuart A., Rosair, Georgina M., Welch, Alan J.

“…Three isomers of [(Cp*Ru)2C2B10H12], the first examples of 14‐vertex heteroboranes containing 14‐skeletal electron pairs, have been synthesized by the direct…”
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Balancing Steric and Electronic Effects in Carbonyl–Phosphine Molybdacarboranes by Robertson, Alasdair P. M., Reckziegel, Alexander, Jones, John J., Rosair, Georgina M., Welch, Alan J.

“…Analysis of the literature structures [(CO)(PPh3)2MC2B9H11] and [(CO)2(PPh3)MC2B9H11] suggests that in [L3MC2B9H11] metallacarboranes the trans influence of CO…”
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Arsenic in Ground Water of the United States: Occurrence and Geochemistry by Welch, Alan H., Westjohn, D.B., Helsel, Dennis R., Wanty, Richard B.

“…Concentrations of naturally occurring arsenic in ground water vary regionally due to a combination of climate and geology. Although slightly less than half of…”
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Isomerisation of nido -[C 2 B 10 H 12 ] 2- dianions: unprecedented rearrangements and new structural motifs in carborane cluster chemistry by McKay, David, Macgregor, Stuart A, Welch, Alan J

“…Dianionic -[C B ] species are key intermediates in the polyhedral expansion from 12- to 13-vertex carboranes and metallacarboranes, and the isomer adopted by…”
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A 15-Vertex Heteroborane by McIntosh, Ruaraidh D., Ellis, David, Rosair, Georgina M., Welch, Alan J.

“…Cornering heteroboranes: The 15‐vertex heteroborane 1‐(p‐cymene)‐8,14‐μ‐(CH2)3‐1,8,14‐closo‐RuC2B12H12 has been prepared (see structure; B orange, Ru blue, C…”
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