Carl Hoff

Manuel Temprado, James Eric McDonough, Arjun Mendiratta, Yi-Chou Tsai, George C. Fortman‡, Christopher C. Cummins, Elena V. Rybak-Akimova, Carl D. Hoff, "Thermodynamic and Kinetic Studies of H atom Transfer from H-Mo(CO)3C5H5 to  Mo(N[tBu]Ar)3 and Mo(N[tBu]Ar)3(·NCPh)--Direct Insertion of Benzonitrile into the Mo-H Bond of H- Mo(N[tBu]Ar)3 forming Mo(N[tBu]Ar)3(N=C(H)Ph)" Inorg. Chem. 2008, in press.

George Fortman, Derek Isrow, Eric McDonough, John Weir, Paul von Rague Schleyer, Brian Scott, Gregory J. Kubas, Ferenc Ungvary, Carl D. Hoff,"Kinetic and Thermodynamic Studies of Reactivity of Trimethylsilyldiazomethane and HMo(CO)3C5R5.(R = H, Me). Estimation of the Mo-N2CH2SiMe3 Bond Strength and Experimental Determination of the Enthalpy of Formation of Trimethylsilyldiazomethane." Organometallics, 2008, in press.

George C. Fortman, Tamás Kégl, Carl D. Hoff, "Kinetic, Thermodynamic, and Mechanistic Aspects of Oxidative Addition Reactions of RE-ER (E = S, Se, Te) and Transition Metal Complexes." Topics in Current Organic Chemistry, 2008, in press.

James E. McDonough, Arjun Mendriatta, George C. Fortman, Derek M. Isrow, Christopher C. Cummins, Elena V. Rybak-Akimova, Steven P. Nolan, and Carl D. Hoff. "Thermodynamic, Kinetic, and Computational Study of  Bonding to Heavier Chalcogenides in the Complexes E=Mo(NtBuAr)3 and E=NHC; E = S, Se, Te, NHC = N-Heterocyclic Carbene".  Inorg. Chem. 2008, 47, 2133.

Kelly, R. A. III, Clavier, H., Guidice, S., Scott, N, M.; Stevens, E. D.; Bordner, J.; Samardjiev, I.; Hoff, C. D.; Cavallo, L.; Nolan, S. P.; "Determination of N-Heterocyclic [NHC] Stereoelectronic Parameters using the (NHC)Ir(CO)2Cl System", Organometallics, 2008; 27, 208.

Weir, J. J.; McDonough, J. E.; Fortman, G. C.; Isrow, D.; Hoff, C. D.; Scott, B.; Kubas, G. J.; "Synthesis, Structure, and Thermochemistry of Formation of the Metal-Metal Bonded Dimers {Mo(m-TeAr)(CO)­3(PiPr3)2]2 ( Ar = Ph, Napth) by Phosphine Elimination from ·Mo(TeAr)(CO)3(PiPr3)2. Inorg. Chem.; 2007, 46, 652.

James T. Muckerman, Etsuko Fujita, Carl D. Hoff, and Gregory J. Kubas," Theoretical Investigation of the Binding of Small Molecules and the Intramolecular Agostic Interaction at Tungsten Centers with Carbonyl and Phosphine Ligands.", J. Chem. Phys. B, 2007, 111, 6815.

Fortman, G. C., Kegl, T., Li, Q. S.; Zhang, X.;  Schaefer, H. F., Xie, Y.; R.;  King, R. B.;  Telser, J.;  and Hoff, C. D.; " Spectroscopic Detection and Theoretical Confirmation of the Role of Cr2(CO)5(C5R5)2 and ·Cr(ketene)(CO)2(C5R5) as Intermediates in Carbonylation of N=N=CHSiMe3 to O=C=CHSiMe3 Catalyzed by ·Cr(CO)3(C5R5) (R = H, CH3).  J. Am. Chem. Soc..2007, 129, 14389.

McDonough, J. E.; Weir, J. J.; Sukcharoenphon, K.; Hoff, C. D.; Kryatov, O. P.; Rybak-Akimova, E. V.; Scott, B.; Kubas, G. J.; Stephens, F. H.; Mendriatta, A.; Cummins, C. C.; :Comparison of Themodynamic and Kinetic Aspects of Dichalcogenide and Ligand Binding Reactions of Mo(CO)3(PR3)2 , W(CO)3(PR3)2, and Mo(NArR)­3 Complexes. The Role of Oxidation States and Ancillary Ligands in Metal Complex Induced Chalcogenyl Radical Generation." J. Am. Chem. Soc.; 2006, 128, 10295.

Mendiatta, A.; Cummins, C. C.; Kryatova, O. P.; Rybak-Akimova, E. V.; McDonough, J. E.; Hoff, C. D.; "Benzonitrile Extrusion from Molybdenum (IV) Ketimide Complexes Obtained via Radical C-E ( E = O, S, Se) Bond Formation: Toward a New Nitrogen Atom Transfer Reaction"; J. Am. Chem. Soc.; 2006, 128, 4881.

Kiss, G., McDonough, J. E.; Weir, J. J.; Hoff, C. D.; "Cluster Compounds: Dinuclear Organometallic Complexes", Encyclopedia of Inorganic Chemistry, 2nd  Edition  2005, John Wiley, New York.

Steric and Electronic Properties of N-Heterocyclic Carbenes (NHC): A Detailed Study of their Interaction with Ni(CO)4. Dorta, R.; Stevens, E. D.; Scott, N. M.; Costabilie, C.; Carvallo, L.; Hoff, C. D.; Nolan, S. P.; J. Am. Chem. Soc, 2005, 127, 2485-2495..

McDonough, J. E.; Carlson, M. J.; Weir, J. J.; Hoff C. D.; Kryatov, O. P.;  Rybak-Akimova E. V.; Cummins C. C.; "Solution Calorimetric and Stopped Flow Kinetic Studies of Reaction of Cr(CO)3C5Me5 with PhSe-SePh and PhTe-TePh.  Experimental and Theoretical Estimates of the Se-Se and Te-Te Bond Strength."; Inorg. Chem., 2005, 44, 3127.
            
Stephens, F. H.; Johnson, M. J. A.; Diasconescu, P. L.; Cummins C. C., Kryatov, O. P.;  Rybak-Akimova E. V, .McDonough, J. E.; Hoff C. D., "Activaiton of White Phosphorus by a Molybdaziridine-Hydride", J. Am.. Chem. Soc. 2005, 127, 15191.

Stephens, F. H.; Figueroa, J. S.; Cummins, C. C.; Kryatova, O.; Kryatov, S. V.; Rybak-Akimova, E. V.; McDonough, J. E.; Hoff, C. D.; "Small Molecule Activation by Metallaziridine Hydride Complexes: Mechanistic Sequence of the Small Molecule-Binding and Metallaziridine Ring-Opening Steps" Organometallics,  2004, 23, 3126-3138.
       
Lang, R. F.; Ju, T. D.; Bryan, J. C.; Kubas, G. J.; Hoff, C. D. "Oxidative Addition of Thiols and Thiol/Thiolate Exchange Reactions of Low Valent Molybdenum and Tungsten Complexes. Synthesic, Structural,  and  Calorimetric Study of  W(1,10-phenanthroline)(3,4-(S)2-Toluene)(CO)2",Inorg. Chim  Acta; 2003; 348; 157-164.

Bor, G.; Fachinetti, G.; Hoff, C. D.; Palyi, G.; Zucchi, C.; Ungvary, F.;  Tannenbaum, R.; "Infrared Spectra of Isotopically Substituted XCo(CO)4 (X = H, EtC(O), and EtOC(O)CH­) Molecules. Inorg. Chim. Acta.; 2003, 353; 1168.

Dota , R.; Stevens, E. D.; Hoff, C. D.; Nolan, S. P.; "Stable Three Coordinate Ni(CO)2(NHC) ( NHC = N-Heterocyclic Carbene) Complexes Enabling the Determination of Ni-NHC Bond Energies"; J. Am. Chem. Soc.; 2003, 125; 10490.

Sukcharoenphon, K.; Moran, D.; McDonough, J. E.; Schaefer, H. E. III.; Schleyer, P. v. R.; Abboud, K. A.; Hoff, C. D.; "Increased Reactivity of the Cr(CO)3C5Me5 Radical with Thiones versus Thiols--A Theoretical and Experimental Investigation" . Inorg. Chem., 2003, 42, 8494.

Mendiratta, A.; Cummins, C. C.; Kryatov,O. P.; Rybak-Akimova, E. V.; McDonough, J. E.; Hoff, C. D.; "Molybdenum Chalcogenobenzimidato Complexes: Radical Synthesis and Nitrile Extrusion via B-EPh ( E = S, Se, Te) Elimination. Inorg. Chem. ¸2003, 42, 8621

Sukcharoenphon, K.; Hoff, C. D.; "Transition Metal  Carbonyl Complexes in Organometallic Chemistry and Catalysis" , 2002, Encylopedia of  Catalysis, John Wiley, New York.
  
Capps, K. B.; Bauer, A.; Abboud, K. A.; Wasser, I.; Vollhardt, K. P. C.;and      Hoff. C. D.; "Synthesis and Crystal Structures of (Fulvalene)W2(SH)2(CO)6, (Fulvalene)W2(m-S2)(CO)6 and (Fulvalene)W2(m-S)(CO)6—Low Valent  Tungsten Carbonyl Sulfide and  Disulfide Complexes . Stabilized by the the Bridging Fulvalene Ligand",  2002, Inorg. Chem.;41, 3212-3217.

Moran, D; Sukcharoenphon, K.; Puchta, R.; Schaefer, H. F. III; Schleyer, P.v. R.; Hoff, C. D.; "the 2-Pyridinethiol-2-Pyridinethione Tautomeric  Equilibrium. A Comparative Experimental and Computational Study.", 2002;   Org. Chem.; 67; 9061-9069.

Sukcharoenphon, K.; Ju, T. D.; Abboud, K. A.; Hoff, C. D.; "Dinuclear Oxidative Addition of N-H and S-H Bonds at Chromium. Reaction of  ·Cr(CO)3C5Me5 with {o-(HA)C6H4S-Cr(CO)3C5Me5 } (A = S, NH) Yielding  [h2-o-(m-A)C6H4SCr(C5Me5)]2 and H-Cr(CO)3C5Me5. Inorg. Chem.; 2002, 41, 6769-6774.

Moran, D; Sukcharoenphon, K.; Puchta, R.; Schaefer, H. F. III; Schleyer, P.v. R.; Hoff, C. D.; "the 2-Pyridinethiol-2-Pyridinethione Tautomeric Equilibrium. A Comparative Experimental and Computational Study.", 2002, Org. Chem.; 67; 9061-9069.

Capps, K. B.; Bauer, A.; Abboud, K. A.; Wasser, I.; Vollhardt, K. P. C.; and Hoff. C. D.; "Synthesis and Crystal Structures of (Fulvalene)W 2(SH) 2(CO) 6, (Fulvalene)W 2( m-S 2)(CO) 6 and (Fulvalene)W 2( m-S)(CO) 6—Low Valent Tungsten Carbonyl Sulfide and Disulfide Complexes Stabilized by the the Bridging Fulvalene Ligand", 2002, Inorg. Chem.;41, 3212-3217.

Sukcharoenphon, K.; Hoff, C. D.; "Transition Metal Carbonyl Complexes in Organometallic Chemistry and Catalysis" , 2002, Encylopedia of Catalysis, John Wiley, New York.

Johnson, A. R.; Baraldo, L. M.; Cherry, J. P. F.; Tsai, Y. C.; Cummins, C.C.; Kryatov,
S. V.; Rybak Akimova, V.; Capps, K. B.; Hoff, C. D.; Haar, C. M.; Nolan, S. P.; “Selective Cleavage of the Nitrous Oxide N-N Bond by Three-Coordinate Molybdenum Complexes: Mechanistic Influences from Kinetic, Calorimetric, and Reacitvity Studies”, J. Amer. Chem. Soc., 2001, 123, 7271-7286

Sukcharoenphon, K.; Capps, K. B.; Abboud, K. A.; Hoff, C. D.; "Synthesis and Structure of W( h 2-SPy) 2(CO) 3 (SPy = 2-Mercaptopyridine) and Its Reaction with PyS-SPy to Yield W( h 2-SPy) 4 ; NO to Yield W( h 2-SPy) 2(NO) 2, and with NO/PyS-SPy to Yield W( h 2-SPy) 3(NO)", Inorg. Chem., 2001, 40, 2402-2408.

Hoff, C. D.; “Thermodynamic and Kinetic Studies of Stable Low Valent Transition Metal Complexes”, Coordination Chemistry Reviews, 2000, 206, 451-467.

Huang, J.; Schanz, H. J.; Stevens, E. D.; Nolan, S. P.; Bauer, A.; Capps, K. B.; Hoff, C. D.; “Structural and Solution Calorimetric Studies of Sulfur Binding to Nucleophillic Carbenes.”, Inorg. Chem., 2000, 39, 1042-1045.

Bauer, A. B.; Capps, K. B.; Wixmerten, B.; Abboud, K. A.; Hoff, C. D., "The Enthalpy of Insertion of Sulfur into the Metal-Hydrogen Bond. Synthetic, Structural, and Calorimetric Study of the Complexes HS-M(CO)3C5R5[M = Cr, Mo, W, R = H, Me]"Inorg. Chem.; 1999, 38, 2136.

Capps, K. B.; Bauer, A.; Kiss, G.; Hoff, C. D.; "The Rate and Mechanism of Oxidative Addition of H2 to the Cr(CO)3C5Me5Radical--Generation of a Model for Reaction of H2 with the Co(CO)4 Radical", J. Organometal. Chem.; 1999, 586, 23.

Vollhardt, K. P.; Cammack, J. K.; Matzger, A. J.; Bauer, A.; Capps, K. B.; Hoff, C. D.; "Thermodynamic and Kinetic Study of Oxidative Addition/Reductive Elimination of H2 and D2 to FulvaleneCr2(CO)6: First Evidence for Relatively Strong Metal-Metal Bonds in Fulvalene Dimetals", Inorg. Chem.; 1999, 38, 2624.

Capps, K. B.; Bauer, A.; Abboud, K. A.; Hoff, C. D.; "Reaction of NO with Tungsten Thiolate and Thiol Complexes: Elimination of PhSNO from W(phen)(CO)2(SPh)2, CO from W(phen)(CO)2(1,2-(-S)2-Arene, and HNO from W(phen)(CO)3(RSH)”, Inorg. Chem.; 1999, 38, 6216.

Capps, K. B.; Bauer, A.; Sukcharoenphon, K.; Hoff, C. D.; “Kinetic and Thermodynamic Studies of Reaction of Cr(CO)3C5Me5 and PhS Cr(CO)3C5Me5 with NO. Reductive Elimination of Thermodynamically Unstable Molecules HNO and RSNO Driven by Formation of the Strong Cr-NO Bond”, Inorg. Chem.,1999, 38, 6206.

Capps, K. B.; Bauer, A.; Ju, T., Hoff, C. D.; "Mechanistic Study of the Reaction of Cr(CO)3C5Me5 with H2S yielding HCr(CO)3C5Me5, HSCr(CO)3C5Me5, and C5Me5(CO)2Cr=S=Cr(CO)2(C5Me5). Kinetic Evidence for Formation of the Subsituted Radical Complex Cr(CO)2(H2S)C5Me5",  Inorg. Chem.,1999, 38, 6130.

Capps, K. B.; Wixmerten, B.; Bauer, A.; Hoff, C. D.; "Thermochemistry of Sulfur Atom Transfer. Enthalpies of Reaction of Phosphines with Sulfur, Selneium, and Tellurium and of Desulfurization of Triphenylarsenic Sulfide, Triphenyl Antimony Sulfide, and Benzyl Trisulfide." Inorg. Chem.; 1998, 37, 2861.

Ju, T. D.; Capps, K. B.; Roper, G. C.; Lang, R. F.; Hoff, C. D.; "First and Second Order Mechanisms for Oxidative Addition of Bound Methyl Disulfide in the Complex W(CO)3(phen)(MeSSMe)." Inorg. Chim. Acta., 1998, 270, 488.

Ju, T. D.; Capps, K. B.; Rober, G. C.; Lang, R. F.; Hoff, C. D.; "Reaction of Phenyl and Methyl Disulfude with Cr(CO)3C5Me5 and HCr(CO)3C5Me5. Metal Radical and Metal Hydride Reactivity at the Sulfur-Sulfur Bond. Different Mechanisms for Oxidative Addition on Alkyl and Aryl Disulfides." Inorg. Chem.; 1997, 36, 614.

Bender, B. R.; Jones, L. H.; Swanson, B. I.; Eckerd, J.; Capps, K. B.; Hoff, C. D.; "Why Does D2 Bind Better than H2? A Theoretical and Experimental Study of the Equilibrium Isotope Effect for the Binding of H2 in a M(n2-H2) Complex. Normal Coordinate Analysis of W(CO)3(PCy3)(H2)." J. Amer. Chem. Soc.; 1997, 119, 9179.

Lang, R. F.; Ju, T. D.; Bryan, J. C.; Kubas, G. J.; Hoff, C. D.; "Reaction of the Complexes M(PR3)2(CO)3(M = Cr, Mo, W, R = iPr, Cy) with Thiols, Hydrogen Sulfide, Disulfides, Hydrogen Iodide, and Iodine. The Role of Heteroatoms in Determining the Metal-Hydrogen Bond Strength at a Sterically Crowded Metal Center." Inorg. Chim. Acta.; 1997, 259, 317.

Ju, T. D.; Lang, R. F.; Hoff, C. D.; "Oxidative Addition of Butanethiol and Thiophenol to the Cr(CO)3C5Me5 Radical. Thermodynamic and Kinetic Study of a Third Order Reaction and its Catalysis." J. Amer. Chem. Soc.; 1996, 118, 5328.

Mukerjee, S. L.; Gonzales, A. A.; Nolan, S. P.; Ju, T. D.; Lang, R. F.; Hoff, C. D.; "Heats of Reaction of HMo(CO)3(C5R5)(R = H, CH3) wotj Diphenyldisulfide, and of Formation of the Clusters [PhSMo(CO)x(C5H5)]2. Thermodynamic Study of Molybdenum-Sulfur Bond Strengths." Inorg. Chim. Acta.; 1995, 240, 175.

Lang, R. F.; Ju, T. D.; Hoff, C. D.; Bryan, J. C.; Kubas, G. J.; "Synthesis and Structure of W(CO)(phen)(SPh)2(n2-SO2)-A W(II) Sulfur Dioxide Complex that Spontaneously Extrudes Sulfur to Form the W(VI) Dioxo Complex W(phen)(SPh)2(=O)2." J. Amer. Chem. Soc., 1994, 116, 9747.

Kiun, J.; Zhang, S.; Basolo, F.; Ju, T. D.; Lang, R. F.; Kiss, G.; Hoff, C. D.; "Ground State Versus Transition State Effects in Arene Displacement Reactions of Complexes AreneCr(CO)3: Arene = Benzene, Naphthalene, Anthracene, Pyrene, Triphenylene, Thiophene, and Dimethylthiophene." Organometallics, 1994, 13, 3692.

Lang, R. F.; Ju, T. D.; Kiss, G.; Hoff, C. D.; Bryan, J. C.; Kubas, G. J.; "Oxidative Addition of Thiols, Disulfides, Iodine, and Hydrogen Iodide to W(CO)3(PiPr3)2. Preparation of Stable 17 Electron Tungsten-Thiolate Radicals from Complexes with Weak W-H Bonds." J. Amer. Chem. Soc., 1994, 116, 7917.

Lang, R. F.; Ju, T. D.; Kiss, G.; Hoff, C. D.; Bryan, J. C.; Kubas, G. J.; "Oxidative Addition of Disulfides, Thiols, and Hydrogen Sulfide to the Complex W(CO)3(phen)(EtCN). Synthesis, Structure, and Reactivity of W(CO)2(phen)(SPh)2, a Coordinatively Unsaturated W(II) Complex that Reversibly Binds CO and Other Ligands." Inorg. Chem., 1994, 33, 3899.

Kiss, G.; Nolan, S. P.; Hoff, C. D. "Direct Solution Calorimetric Measurements of Proton and Electron Transfer Reactions for Transition Metal Complexes. Thermochemical Study of Metal-Hydride and Metal-Metal Bond Energies." Inor. Chim. Acta., 1994. 227, 285.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
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