Výsledky vyhledávání - "Roger M. Nielson"

Electron Self-Exchange Kinetics for a Water-Soluble Ferrocenium/Ferrocene Couple: Rate Modulation via Charge Dependent Calix[6]arene-p-sulfonate Encapsulation

Autor: Roger M. Nielson, Joseph T. Hupp

Publikováno v: Inorganic chemistry. 35(5)

Both trimethylaminomethylferrocene (TMAFc+) and the corresponding ferrocenium species can be encapsulated by calix[6]arene-p-sulfonate in water as solvent. Selective encapsulation of the TMAFc2+ form provides a basis for electrostatic acceleration of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f822bd6e3bb105ffd408b09c51686815
https://pubmed.ncbi.nlm.nih.gov/11666343

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Primitive Molecular Recognition Effects in Electron Transfer Processes: Modulation of ((Trimethylammonio)methyl)ferrocenium/ferrocene Self-Exchange Kinetics via Hydrophobic Encapsulation

Autor: Roger M. Nielson, and L. Andrew Lyon, Joseph T. Hupp

Publikováno v: Inorganic chemistry. 35(4)

1H NMR line broadening measurements show that the electron self-exchange rate constant for ((trimethylamino)methyl)ferrocenium/ferrocene (TMAFc(2+/+)) in D(2)O as solvent is decreased by ca. 20-50 fold in the presence of excess beta-cyclodextrin. The

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24a424d20f533280c7d5fcc756f0f1d9
https://pubmed.ncbi.nlm.nih.gov/11666271

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Modulation of Outer-Sphere Electron Transfer Reactivity via Primitive Molecular Recognition Effects: Ru(NH3)5(4-methyl-pyridine)3+/2+ Self-Exchange Kinetics in the Presence of Macrocyclic Polyether Species

Autor: Dong I. Yoon, Joseph T. Hupp, Roger M. Nielson

Publikováno v: Journal of the American Chemical Society. 117:9085-9086

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::563ed5845948066c48b8f83e51f17879
https://doi.org/10.1021/ja00140a033

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Solvent dynamical effects in electron transfer: evaluation of electronic matrix coupling elements for metallocene self-exchange reactions

Autor: George E. McManis, Alexander Gochev, Roger M. Nielson, Michael J. Weaver

Publikováno v: Journal of the American Chemical Society. 111:5533-5541

The functional dependence of the rate constants for self exchange, k sub ex, for a series of metallocene redox couples to solvent-induced variations in the nuclear frequency factor, nu, engendered by alterations in the longitudinal solvent relaxation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b14be7647adce5ecd109e875cde08e31
https://doi.org/10.1021/ja00197a004

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Electron exchange by hexakis(tert-butyl isocyanide)- and hexakis(cyclohexyl isocyanide)manganese(I,II). Solvent effect on the rate constant and the volume of activation

Autor: Harold W. Dodgen, Roger M. Nielson, John P. Hunt, William F. Siems, Martin Stebler, Scot Wherland

Publikováno v: Inorganic Chemistry. 27:2893-2897

The rate of electron self-exchange of Mn(CNC(CH/sub 3/)/sub 3/)/sub 6//sup +/2+/ and Mn(CNC/sub 6/H/sub 11/)/sub 6//sup +/2+/ as the BF/sub 4//sup /minus// salts has been measured by /sup 55/Mn NMR line broadening as a function of pressure, temperatu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5b5a0892a8eefae2d811a051b621c5db
https://doi.org/10.1021/ic00289a029

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The role of solvent dynamics in electron transfer

Autor: Michael J. Weaver, Roger M. Nielson

Publikováno v: Journal of Electroanalytical Chemistry and Interfacial Electrochemistry. 260:15-24

Rate constants for electrochemical exchange, k ex , have been measured for the cobalt clathrochelate couples Co(dmg) 3 (BF) 2 +/0 and Co(dmg) 3 (BC 4 H 9 ) 2 +/0 (dmg = double deprotonated dimethylglyoxime) at gold and mercury electrodes in six solve

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dc4378c5aa6036de0b44d5a9f42d79b3
https://doi.org/10.1016/0022-0728(89)87095-0

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Solvent dynamical effects in electron transfer: comparisons of self-exchange kinetics for cobaltocenium-cobaltocene and related redox couples with theoretical predictions

Autor: George E. McManis, Michael J. Weaver, M. Neal Golovin, Roger M. Nielson

Publikováno v: The Journal of Physical Chemistry. 92:3441-3450

Rate constants, kex, and activation parameters for the self exchange of cobaltocenium-cobaltocene, Cp2Co, and the decamethyl derivative, Cp2Co, in thirteen organic solvents have been evaluated using the proton nmr line-broadening technique with the o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2de48b7fbe91cd80157490abbfd8c57d
https://doi.org/10.1021/j100323a026

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Mn(CNR)6+/2+ electron self-exchange in acetonitrile. A possible distance dependence for a bimolecular electron-transfer reaction in solution

Autor: Roger M. Nielson, Scot Wherland

Publikováno v: Journal of the American Chemical Society. 107:1505-1510

Mesures faites pour 5 groupes alkyl en fonction de la concentration, de la temperature. Toutes les constantes de vitesse augmentent avec la force ionique. La variation de vitesse est due a une diminution de la constante de vitesse de transfert avec l

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7cfd9f57d42322f0e4530dea2f54c1cc
https://doi.org/10.1021/ja00292a010

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