Search Results - "Lemke, Frederick R."

Hydride Complexes of Ruthenium and Related Metals: Preparation and Structures of Cp(PMe3)2RuH and [Cp(PMe3)2RuH2]BF4 by Lemke, Frederick R, Brammer, Lee

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Neutron Diffraction Studies of [Cp(PMe3)2RuH] and [Cp(PMe3)2RuH2]BF4 at 20 K by Brammer, Lee, Klooster, Wim T, Lemke, Frederick R

“…The crystal and molecular structures of [Cp(PMe3)2RuH] (1) and [Cp(PMe3)2RuH2]BF4 (2) have been determined from neutron diffraction measurements at 20 K. The…”
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Substituent Effects on the Spectroscopic Properties and Reactivity of Hexacoordinate Silicon(IV) Porphyrin Complexes by Kane, Kevin M, Lorenz, Carrie R, Heilman, David M, Lemke, Frederick R

“…A general high-yield synthetic route to the hexacoordinate silicon porphyrin dichloride complexes trans-(Por)SiCl2 {Por = the dianions of octaethylporphyrin…”
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Bis(trifluoromethanesulfonato)(tetra-p-tolylporphyrinato)silicon(IV), (TTP)Si(OTf)2: The First Structurally Characterized (Porphyrinato)silicon(IV) Complex by Kane, Kevin M, Lemke, Frederick R, Petersen, Jeffrey L

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RuH3(SiCl2Me)(PPh3)3:  A Trihydridosilylruthenium Complex with Three Nonclassical Ru−H···Si Interactions by Yardy, Nicholas M, Lemke, Frederick R, Brammer, Lee

“…The reaction of RuCl2(PPh3)3 with HSiMeCl2 in hexanes at 65 °C produced the trihydridosilylruthenium complex RuH3(SiMeCl2)(PPh3)3 (1). In the 1H{31P} NMR…”
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trans-Difluorosilicon(IV) Complexes of Tetra-p-tolylporphyrin and Tetrakis(p-(trifluoromethyl)phenyl)porphyrin:  Crystal Structures and Unprecedented Reactivity in Hexacoordinate Difluorosilanes1 by Kane, Kevin M, Lemke, Frederick R, Petersen, Jeffrey L

“…Single-crystal X-ray structures have been determined for the difluoro(porphyrinato)silicon(IV) complexes trans-(Por)SiF2 (Por = the dianions of…”
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Substituent effects in the ruthenium catalyzed hydrosilylation of para-substituted phenylacetylenes by Paris, Shadrick I.M., Lemke, Frederick R.

“…A Hammett plot of phenylacetylene relative reactivity, towards RuCl 2(PPh 3) 3 catalyzed hydrosilylation with HSiCl 2Me, exhibited two trendlines for the…”
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Stereoselective Generation of Cis or Trans Olefins from the RuCl2(PPh3)3-Catalyzed Diazo Coupling of Ethyldiazoacetate by Graban, Eric, Lemke, Frederick R

“…The RuCl2(PPh3)3-catalyzed diazo coupling of ethyl diazoacetate was manipulated to generate either diethyl fumarate (DEF) or diethyl maleate (DEM) with high…”
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Effect (or Lack Thereof) of Ancillary Groups on the Preparation and Spectroscopic Properties of Ruthenium Silyl Complexes Containing the Cp(PR3)2Ru Moiety by Freeman, Samuel T. N, Lofton, Lori L, Lemke, Frederick R

“…The preparation and characterization of Cp(PR3)2RuSiX3 [PR3 = PPhMe2, SiX3 = SiCl3 (1), SiHCl2 (2), SiH2Cl (3), SiHMeCl (4), SiH3 (7), SiMeH2 (8), SiMe3 (9);…”
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Ruthenium Silyl Complexes Containing the Cp(PMe3)2Ru Moiety:  Preparation, Substituent Effects, and Silylene Character in the Ru−Si Bond by Lemke, Frederick R, Galat, Kevin J, Youngs, Wiley J

“…The preparation and characterization of new ruthenium(II) silyl complexes containing the Cp(PM3)2Ru moiety are described. The ruthenium(II) hydride…”
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Facile Synthesis and Structures of η6-Arene Bis(silyl) Complexes of Ruthenium(II):  (η6-arene)Ru(PPh3)(SiX3)2 by Burgio, James, Yardy, Nicholas M, Petersen, Jeffrey L, Lemke, Frederick R

“…The reaction of RuCl2(PPh3)3 with HSiX3 in benzene produced (η6-benzene)Ru(PPh3)(SiX3)2 (SiX3 = SiCl3 (1), SiMeCl2 (2)) as white to light yellow solids in high…”
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Ruthenium Silyl Complexes from the Reaction of Chlorosilanes with an Amphoteric Ruthenium Hydride. Evidence for an Agostic Ru-H-Si Intermediate by Lemke, Frederick R

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[Cp(PMe3)2Ru(η2-HSiCl3)]+:  Structure and Bonding of a Rare Cationic η2-Silane Complex by Freeman, Samuel T. N, Lemke, Frederick R, Brammer, Lee

“…Protonation of Cp(PMe3)2RuSiCl3 (1) leads to the formation of [Cp(PMe3)2Ru(η2-HSiCl3)]+ (2 + ), a rare example of a cationic η2-silane complex. The η2-silane…”
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Ruthenium/zirconium complexes containing C2 bridges with bond orders of 3, 2, and 1. Synthesis and structures of Cp(PMe3)2RuCHnCHnZrClCp2 (n = 0, 1, 2) by Lemke, Frederick R, Szalda, David J, Bullock, R. Morris

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Effect of Ancillary Ligation on the Relative Bond Disruption Enthalpies of Ru−H and Ru−Cl Bonds in Cp(PR3)2RuX (PR3 = PMe3, PMe2Ph, PMePh2, PPh3; X = H, Cl) by Freeman, Samuel T. N, Lemke, Frederick R, Haar, Christopher M, Nolan, Steven P, Petersen, Jeffrey L

“…The ruthenium chloride and hydride complexes Cp(PR3)2RuH {X = Cl; PR3 = PMe3 (1), PMe2Ph (2), PMePh2 (3), PPh3 (4); X = H; PR3 = PMe3 (5), PMe2Ph (6), PMePh2…”
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Photoreduction of palladium radical cations. Transient absorbance kinetics of electron transfers to photogenerated [Pd(CNMe)3].cntdot.+ radicals by Lemke, Frederick R, Granger, Robert M, Morgenstern, David A, Kubiak, Clifford P

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trans-Difluorosilicon(IV) Complexes of Tetra-p-tolylporphyrin and Tetrakis(p-(trifluoromethyl)phenyl)porphyrin: Crystal Structures and Unprecedented Reactivity in Hexacoordinate Difluorosilanes(1) by Kane, Kevin M., Lemke, Frederick R., Petersen, Jeffrey L.

“…Single-crystal X-ray structures have been determined for the difluoro(porphyrinato)silicon(IV) complexes trans-(Por)SiF(2) (Por = the dianions of…”
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Photochemical activation of carbon dioxide. Transient absorbance kinetic studies of the addition of carbon dioxide to a metal-to-bridging ligand charge-transfer state of a binuclear nickel(0) complex by Lemke, Frederick R, DeLaet, Dru L, Gao, Jiali, Kubiak, Clifford P

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(η1-Pentamethylcyclopentadienyl)silyl Complexes of Ruthenium. Preparation, Reactivity, and X-ray Crystal Structure of Cp(PMe3)2RuSiCl2(η1-Cp) by Lemke, Frederick R, Simons, Richard S, Youngs, Wiley J

“…The reaction of Cp(PMe3)2RuCH2SiMe3 (1) with (η1-Cp*)SiHCl2 in refluxing toluene produces silyl Cp(PMe3)2RuSiCl2(η1-Cp*) (2) in good yields; Cp(PMe3)2RuSiCl3…”
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Complexes containing a C2 bridge between an electron-rich metal and an electron-deficient metal. An agostic interaction in a RuCH2CH2Zr moiety by Bullock, R. Morris, Lemke, Frederick R, Szalda, David J

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