Zobrazeno 1 - 10
of 51
pro vyhledávání: '"D Webster, Keogh"'
Autor:
C. Drew Tait, Robert J. Donohoe, David Clark, D. Webster Keogh, Phillip D. Palmer, Brian L. Scott, Pamela L. Gordon, Steven D. Conradson
Publikováno v:
Inorganic Chemistry. 52:3547-3555
Hexavalent neptunium can be solubilized in 0.5-3.5 M aqueous MOH (M = Li(+), Na(+), NMe4(+) = TMA(+)) solutions. Single crystals were obtained from cooling of a dilute solution of Co(NH3)6Cl3 and NpO2(2+) in 3.5 M [N(Me)4]OH to 5 °C. A single-crysta
Autor:
Patricia J. Melfi, Elisa Tomat, Michael T. Huggins, Bertrand Donnio, Richard W. Date, D. Webster Keogh, Jonathan L. Sessler, Duncan W. Bruce, Pamela L. Gordon, Wyeth Callaway
Publikováno v:
Journal of Alloys and Compounds. 418:171-177
The coordination of f-block cations with Schiff base oligopyrrolic macrocycles is discussed. Analysis of the mesophase of a uranyl 2,5-diformylpyrrole-derived expanded porphyrin complex through temperature-dependent X-ray diffraction (XRD) methods ha
Autor:
Ryan F. Hess, Pamela L. Gordon, Dario Manara, C. Drew Tait, Franck Wastin, Peter K. Dorhout, Francisco J. Espinosa-Faller, P. Villella, Luis A. Morales, Vincenzo V. Rondinella, Christophe Den Auwer, D. Webster Keogh, Jean Rebizant, Richard G. Haire, Bruce D. Begg, Mei Ding, Mary P. Neu, Wolfgang Runde, D. Kirk Veirs, Gerard H. Lander, Steven D. Conradson, Nancy J. Hess, David Clark, Patricia Paviet-Hartmann
Publikováno v:
Journal of Solid State Chemistry. 178:521-535
The local structure and chemical speciation of the mixed valence, fluorite-based oxides UO{sub 2+x} (0.00=
Autor:
Francisco J. Espinosa-Faller, Pamela L. Gordon, Patricia Paviet-Hartmann, Wolfgang Runde, C. Drew Tait, Richard G. Haire, Ryan F. Hess, David Clark, Phillip M. Villella, Peter K. Dorhout, D. Webster Keogh, Steven D. Conradson, Nancy J. Hess, Luis A. Morales, Christophe Den Auwer, Mary P. Neu, Bruce D. Begg, Mei Ding, D. Kirk Veirs
Publikováno v:
Journal of the American Chemical Society. 126:13443-13458
Pu L(3) X-ray absorption fine structure spectra from 24 samples of PuO(2+x) (and two related Pu-substituted oxides), prepared by a variety of methods, demonstrate that (1) although the Pu sublattice remains the ordered part of the Pu distribution, th
Autor:
Jonathan L. Sessler, D. Webster Keogh, Vladimír Král, Julian M. Davis, Norman L. Schroeder, Anne E. V. Gorden
Publikováno v:
Supramolecular Chemistry. 16:91-100
The addition of aqueous pH 7 solutions of 7.2×10-3 M pertechnetate to dilute aqueous 2.5% MeOH solutions containing a water-solubilized sapphyrin, 3,12,13,22-tetraethyl-8,17-bis[bis(hydroxyethyl)-amino)carbonylethyl]-2,7,18,23-tetramethylsapphyrin (
Autor:
Richard G. Haire, C. Drew Tait, Steven D. Conradson, Patricia Paviet-Hartmann, P.D. Palmer, Anthony J. Lupinetti, Erik D. Brady, Francisco J. Espinosa-Faller, Wolfgang Runde, Luis A. Morales, Ryan F. Hess, D. Webster Keogh, Pamela L. Gordon, Franck Wastin, Nancy J. Hess, Christophe Den Auwer, Gerard H. Lander, and D. Kirk Veirs, David Clark, Sean D. Reilly, Bruce D. Begg, Mei Ding, Peter K. Dorhout, Mary P. Neu, Kent D. Abney
Publikováno v:
Inorganic Chemistry. 43:116-131
Pu L(3) X-ray near edge absorption spectra for Pu(0-VII) are reported for more than 60 chalcogenides, chlorides, hydrates, hydroxides, nitrates, carbonates, oxy-hydroxides, and other compounds both as solids and in solution, and substituted in zircon
Autor:
Jonathan L. Sessler, Vincent M. Lynch, Robert J. Donohoe, Pamela L. Gordon, Anne E. V. Gorden, C. Drew Tait, Sharon Hannah, D. Webster Keogh, Daniel Seidel
Publikováno v:
Inorganica Chimica Acta. 341:54-70
The synthesis of a new hexapyrrolic expanded porphyrin, hexaphyrin (1.0.1.0.0.0) (1), that was found to form unique complexes of the actinide cations neptunyl (NpO2 +) and uranyl (UO2 2+) was recently reported (Sessler et al., Angew. Chem., Int. Ed.
Publikováno v:
Journal of the American Chemical Society. 124:7007-7015
Treatment of nitrobenzene and other various nitroarenes with 6 equiv of samarium(II) under strictly anhydrous conditions allows for the isolation of aniline or the corresponding arylamine. Reducing the number of samarium(II) equivalents allows for th
Autor:
David Clark, John C. Gordon, Brian L. Scott, John G. Watkin, John T. Brady, Garth R. Giesbrecht, D. Webster Keogh, Ryszard Michalczyk
Publikováno v:
European Journal of Inorganic Chemistry. 2002:723-731
The reaction of [Ln(OAr)3]2 with four equivalents of trialkylaluminum leads to the formation of the bis-trialkylaluminum adducts (ArO)Ln[(μ-OAr)(μ-R)AlR2]2 [Ln = La, R = Me (1); Ln = La, R = Et (3); Ln = Sm, R = Et (4)]. The X-ray crystal structure
Autor:
Garth R. Giesbrecht, David Clark, John C. Gordon, D. Webster Keogh, John G. Watkin, Brian L. Scott, John T. Brady
Publikováno v:
Organometallics. 21:127-131
Reaction of [Sm(OAr)3]2 with 4 equiv of trimethylaluminum leads to formation of the bis-trimethylaluminum adduct (ArO)Sm[(μ-OAr)(μ-Me)AlMe2]2, which exhibits very short Sm−C(bridging) distances of 2.620(5) and 2.632(5) A. A reduced 1JC-H coupling