Výsledky vyhledávání - "David G. Humphrey"

Comparison of the reactivity of [2.2]paracyclophane and p-xylene

Autor: David G. Humphrey, D. James Wilson, D. Michael P. Mingos, John E. McGrady, Paul J. Dyson

The relative abilities of [2.2]paracyclophane (C16H16) and p-xylene (C6H4Me2-1,4) to form arene tricarbonyl complexes from chromium hexacarbonyl has been studied in dioxane using the Strohmeier reflux method, and the rate constants contrasted. The re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad8d4ce16bb727b9d77788a0bca078d7
https://ora.ox.ac.uk/objects/uuid:7dcd352a-93cf-416f-877a-be72a0d1021a

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The use of spectroelectrochemistry to probe the redox-activated ligand-exchange reactions of the complexes trans-[NBu4][RuX4(CNXyl)2] (X = Cl or Br, Xyl = 2,6-dimethylphenyl)

Autor: Joseph P. al Dulaimi, David G. Humphrey, Nicholas C. Harden, Robin J. H. Clark, Alan M. Bond

Publikováno v: Journal of the Chemical Society, Dalton Transactions. :2541-2547

The previously unreported complexes trans-[NBu4][RuX4(CNXyl)2] (X = Cl or Br, Xyl = 2,6-dimethylphenyl) have been prepared by treating [NBu4]2[RuX6] with the isocyanide ligand CNXyl in dichloromethane–ethanol and characterised by IR and UV-Vis spec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::69f8eb5d96037923eddc2a6c3a7ece12
https://doi.org/10.1039/b108474g

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Chemical, Electrochemical, and Structural Aspects of the Ruthenium Complexes Ru(η-arene)Cl2(P) (Where Arene = Benzene, [2.2]Paracyclophane and P = Triphenylphosphine, rac-[2.2]Paracyclophanylphosphine)

Autor: Clive J. Boxwell, Jonathan W. Steed, David G. Humphrey, Priya Suman, Simon B. Duckett, Paul J. Dyson, Rajiv Bhalla

Publikováno v: Organometallics. 21:924-928

Reaction of diphenyl[2.2]paracyclophanylphosphine, rac-PPh2(C16H15) (1), with [Ru(η-arene)Cl2]2 (where arene = C6H6, [2.2]paracyclophane (C16H16)) in a 2:1 ratio affords the half-sandwich complexes Ru(η-arene)Cl2{PPh2(C16H15)} (arene = C6H6 (2), C1

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::50f7c1b847aba1e97a85d26a7ebb9ab0
https://doi.org/10.1021/om010763a

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A Revised Simplex Search Procedure for Stochastic Simulation Response Surface Optimization

Autor: David G. Humphrey, James R. Wilson

Publikováno v: INFORMS Journal on Computing. 12:272-283

We develop a variant of the Nelder-Mead (NM) simplex search procedure for stochastic simulation optimization that is designed to avoid many of the weaknesses encumbering similar direct-search methods—in particular, excessive sensitivity to starting

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6f391f593c0bcd091bd1a673981d3ef5
https://doi.org/10.1287/ijoc.12.4.272.11879

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Redox-activated ligand-exchange reactions of tetrabutylammonium trans-bis(tert-butyl isocyanide)tetrahalogenoruthenate(III) complexes, [NBu4][RuX4(CNBut)2] (X = Cl or Br)

Autor: David G. Humphrey, Joseph P. al Dulaimi, Robin J. H. Clark

Publikováno v: Journal of the Chemical Society, Dalton Transactions. :933-939

In situ IR and UV-VIS spectroelectrochemical studies have shown that reduction of the ions trans-[RuX4(CNBut)2]− (X = Cl or Br) in the presence of acetonitrile or pyridine results in the formation of mer,trans-[RuX3(CNBut)2L]− (L = MeCN or py), w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c5294d8798ca6d5eadee019a47d3840a
https://doi.org/10.1039/a908241g

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Electronic, Raman and resonance Raman spectroscopy of [NBu4][RuBr4(MeCN)2]

Autor: Robin J. H. Clark, Ian M. Bell, David G. Humphrey

Publikováno v: Journal of the Chemical Society, Dalton Transactions. :1307-1310

Raman spectra taken at resonance with the eu(Br pπ) → b2g(Ru dπ) charge-transfer (CT) transition of the trans-[RuBr4(MeCN)2]– ion, as its [NBu4]+ salt at ca. 80 K, consist of long overtone progressions in ν1(a1g), the symmetric RuBr stretch (a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fb728ee01c5c33c316140ebc11ee182c
https://doi.org/10.1039/a900267g

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Linking metal centres with diimido ligands: synthesis, electronic and molecular structure and electrochemistry of organometallic ditungsten complexes [{WCl2(Ph2PMe)2(CO)}2(N–X–N)] (X = π-conjugated organic)

Autor: Woo-Sung Kim, David G. Humphrey, Timothy J. Norman, Simon P Redmond, Mo-yin (Venus) Lee, Nikolas Kaltsoyannis, Graeme Hogarth

Publikováno v: Journal of the Chemical Society, Dalton Transactions. :2705-2723

Tungsten(IV) diimido-bridged complexes [{WCl2(Ph2PMe)2(CO)}2(µ-N–X–N)] have been prepared via oxidative addition of diisocyanates to two equivalents of [WCl2(Ph2PMe)4]. para-Substituted monoimido complexes [WCl2(Ph2PMe)2(CO)(NC6H4X-p)] (X = I, B

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a10c224ac54e24570c2a97a99ef197e0
https://doi.org/10.1039/a904001c

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