Search Results - "Graham, Todd W"

Ionic Liquids Composed of Phosphonium Cations and Organophosphate, Carboxylate, and Sulfonate Anions as Lubricant Antiwear Additives by Zhou, Yan, Dyck, Jeffrey, Graham, Todd W, Luo, Huimin, Leonard, Donovan N, Qu, Jun

“…Oil-soluble phosphonium-based ionic liquids (ILs) have recently been reported as potential ashless lubricant additives. This study is to expand the IL…”
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Synthesis and Structural Characterization of the First Thermally Stable, Neutral, and Electrophilic Phosphinidene Complexes of Vanadium by Graham, Todd W, Udachin, Konstantin A, Zgierski, Marek Z, Carty, Arthur J

“…The first thermally stable, neutral, electrophilic phosphinidene complexes of vanadium, [CpV(CO)3{η1-P(NR2)}] (R = i Pr (3a), Cy (3b)), have been prepared by…”
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Metal-Free Catalytic Hydrogenation of Polar Substrates by Frustrated Lewis Pairs by Stephan, Douglas W, Greenberg, Sharonna, Graham, Todd W, Chase, Preston, Hastie, Jeff J, Geier, Stephen J, Farrell, Jeffrey M, Brown, Christopher C, Heiden, Zachariah M, Welch, Gregory C, Ullrich, Matthias

“…In 2006, our group reported the first metal-free systems that reversibly activate hydrogen. This finding was extended to the discovery of “frustrated Lewis…”
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Reduction of Titanium(IV)-Phosphinimide Complexes:  Routes to Ti(III) Dimers, Ti(IV)-Metallacycles, and Ti(II) Species by Graham, Todd W, Kickham, James, Courtenay, Silke, Wei, Pingrong, Stephan, Douglas W

“…The redox chemistry of phosphinimide-containing group IV metal complexes has been investigated. Reaction of the simple phosphinimide species CpTi(NPR3)Cl2 (R =…”
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Catalytic Solvolysis of Ammonia Borane by Graham, Todd W, Tsang, Chi‐Wing, Chen, Xuanhua, Guo, Rongwei, Jia, Wenli, Lu, Shui‐Ming, Sui‐Seng, Christine, Ewart, Charles B, Lough, Alan, Amoroso, Dino, Abdur‐Rashid, Kamaluddin

“…Hydrogen on tap: A homogeneous catalyst system for the rapid and quantitative solvolysis of ammonia borane (AB) has been developed. The iridium catalyst is…”
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Catalytic PH Activation by Ti and Zr Catalysts by Masuda, Jason D., Hoskin, Aaron J., Graham, Todd W., Beddie, Chad, Fermin, Maria C., Etkin, Nola, Stephan, Douglas W.

“…Catalytic dehydrocoupling of phosphines was investigated using the anionic zirconocene trihydride salts [Cp*2Zr(μ‐H)3Li]3 (1 a) or [Cp*2Zr(μ‐H)3K(thf)4] (1 b),…”
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Highly active iridium catalysts for the hydrogenation of ketones and aldehydes by Chen, Xuanhua, Jia, Wenli, Guo, Rongwei, Graham, Todd W, Gullons, Meredith A, Abdur-Rashid, Kamaluddin

“…The pressure hydrogenation capabilities of the iridium pincer complexes IrH2Cl[((i)Pr2PC2H4)2NH] (1) and IrH3[((i)Pr2PC2H4)2NH] (2) are described and compared…”
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Coordination and Activation of Diazoalkanes in the Presence of Rh/Ru and Rh/Os Metal Combinations by Samant, Rahul G, Graham, Todd W, Rowsell, Bryan D, McDonald, Robert, Cowie, Martin

“…The substituted diazoalkanesethyl diazoacetate (EDA), diethyl diazomalonate (DEDM), and trimethylsilyl diazomethane (TMSDM)react readily with the…”
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Alkyne/Methylene Coupling Reactions at Adjacent Rh/Os Centers:  Stepwise Transformations from C1- through C4-Bridged Species by Wigginton, James R, Chokshi, Amala, Graham, Todd W, McDonald, Robert, Ferguson, Michael J, Cowie, Martin

“…Reaction of the methylene-bridged complex [RhOs(CO)3(μ-CH2)(dppm)2][CF3SO3] (dppm = μ-Ph2PCH2PPh2) with dimethyl acetylenedicarboxylate or hexafluorobutyne…”
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Reactivity of Terminal Electrophilic Phosphinidene Complexes:  Synthesis of the First Rhenium Phosphinidene, [Re(CO)5(η1-PN i Pr2)][AlCl4], and Novel Reactions with Azobenzene by Graham, Todd W., Cariou, Renan P.-Y., Sánchez-Nieves, Javier, Allen, Anna E., Udachin, Konstantin A., Regragui, Rachid, Carty, Arthur J.

“…The first terminal rhenium phosphinidene complex, [Re(CO)5(η1-PN i Pr2)][AlCl4], has been synthesized by chloride abstraction from [Re(CO)5{P(Cl)(N i Pr2)}]…”
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Remarkable two-step, four-electron oxidative addition reactions at phosphorus [P(I)-P(V)] in terminal electrophilic phosphinidene complexes by Graham, Todd W, Udachin, Konstantin A, Zgierski, Marek Z, Carty, Arthur J

“…The reactivity of the terminal phosphinidene complex [Re(CO) 5 {η 1 -P(N i Pr 2 )}]AlCl 4 towards the oxidants S 8 and Me 3 SnN 3 has been investigated. These…”
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((Diaryl- and Dialkylphosphino)alkyl)cyclopentadienyl Ligands and Their Use in the Preparation of Heterobinuclear Ti/Mo and Zr/Mo Complexes by Graham, Todd W, Llamazares, Angela, McDonald, Robert, Cowie, Martin

“…The syntheses of a series of bifunctional ligands, in which a cyclopentadienyl and a phosphine group are linked by either a CH2 or a C2H4 fragment (-C5H4(CH2)…”
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Tetranuclear, Early−Late Heterobimetallic Complexes Bridged by the Bifunctional Phosphinoalkylcyclopentadienyl Ligands [Ph2P(CH2) n C5H4]- (n = 1, 2) by Graham, Todd W, Llamazares, Angela, McDonald, Robert, Cowie, Martin

“…Reaction of (η5-C5H4(CH2) n PPh2)2MCl2 (n = 1, M = Ti (1), Zr (2); n = 2, M = Ti (3), Zr (4)) with [RhCl(CO)2]2 at −80 °C and under conditions of high dilution…”
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Mixed-Metal Hydrocarbyl Complexes Involving the Rh/Mo and Rh/W Metal Combinations by Graham, Todd W, Van Gastel, Françoise, McDonald, Robert, Cowie, Martin

“…Reaction of [RhMo(H)(CO)4(dppm)2] (dppm = Ph2PCH2PPh2) with a number of alkynes, RC⋮CR‘ (R = R‘ = C(O)OCH3, CF3; R = H, R‘ = C(O)CH3, C(O)OCH3) yields the…”
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Catalytic Solvolysis of Ammonia Borane by Graham, Todd W., Tsang, Chi‐Wing, Chen, Xuanhua, Guo, Rongwei, Jia, Wenli, Lu, Shui‐Ming, Sui‐Seng, Christine, Ewart, Charles B., Lough, Alan, Amoroso, Dino, Abdur‐Rashid, Kamaluddin

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Synthesis of σ-π-phosphinidene sulfide complexes [Mn2(CO)n(μ-η1,η2-P(NR2)S)] (n=8,9) via direct sulfuration of electrophilic μ-phosphinidenes and photochemical transformation to a trigonal prismatic Mn2P2S2 cluster by Graham, Todd W., Udachin, Konstantin A., Carty, Arthur J.

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Reactions of the titanium-carbide species CpTi(μ 2-Me)(μ 2-NP i-Pr 3)(μ 4-C)(AlMe 2) 3 by Graham, Todd W., Ong, Christopher, Wei, Pingrong, Stephan, Douglas W.

“…Reaction of CpTi(μ 2-Me)(μ 2-NP i-Pr 3)(μ 4-C)(AlMe 2) 3 with ClSnMe 3 and MeO 3SCF 3 afford the species [CpTi(μ 2-Cl)(μ 2-NP i-Pr 3)(μ 4-C)(μ 2-Cl)(AlMe)(AlMe…”
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Synthesis of σ-π-phosphinidene sulfide complexes [Mn 2(CO) n (μ-η 1,η 2-P(NR 2) S)] ( n = 8, 9) via direct sulfuration of electrophilic μ-phosphinidenes and photochemical transformation to a trigonal prismatic Mn 2P 2S 2 cluster by Graham, Todd W., Udachin, Konstantin A., Carty, Arthur J.

“…Synthesis and structural characterization of rare σ-π-phosphinidene sulfide (i.e μ-η 1,η 2-P (NR 2) S) complexes. Photochemical conversion of phosphinidene…”
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Alkyne/Methylene Coupling Reactions at Adjacent Rh/Os Centers:  Stepwise Transformations from C 1 - through C 4 -Bridged Species by Wigginton, James R., Chokshi, Amala, Graham, Todd W., McDonald, Robert, Ferguson, Michael J., Cowie, Martin

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Remarkable two-step, four-electron oxidative addition reactions at phosphorus [P by Graham, Todd W, Udachin, Konstantin A, Zgierski, Marek Z, Carty, Arthur J

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