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604 results on '"A. Guy Orpen"'

601. Two-step solid-state synthesis of PEPPSI-type compounds.

Author

Adams, Christopher J., Lusi, Matteo, Mutambi, Emily M., and Guy Orpen, A.

Subjects
*CARBENES, *PALLADIUM, *PLATINUM, *CATALYSIS synthesis, *CHEMICAL reactions
Abstract

The two-step mechanochemical preparation of carbene–pyridine complexes of palladium and platinum is reported. The organometallic products, which represent a class of commercially available catalysts, are rapidly formed in excellent yield proving solvent-free synthesis to be a viable synthetic alternative even in the case of NHC-containing compounds. [ABSTRACT FROM AUTHOR]

Published
2015
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602. Reactivity of Metal-Metal Bonds

Author

MALCOLM H. CHISHOLM, F. A. COTTON, R. E. McCARLEY, T. R. RYAN, C. C. TORARDI, JOSÉ L. VIDAL, R. C. SCHOENING, W. E. WALKER, MARK S. WRIGHTON, JAMES L. GRAFF, JOHN C. LUONG, CAROL L. REICHEL, JOHN L. ROBBINS, GREGORY L. GEOFFROY, HENRY C. FOLEY, JOSEPH R. FOX, WAYNE L. GLADFELTER, ANTHONY POË, ALAN L. BALCH, R. J. PUDDEPHATT, J. A. CONNOR, H. A. SKINNER, RICHARD A. WALTON, M. DAVID CURTIS, LOUIS MESSERLE, NICEPHOROS A. FOTINOS, ROBERT F. GERLACH, ANDREW F. DYKE, STEPHEN R. FINNIMORE, SELBY A. R. KNOX, PAMELA J. NAISH, A. GUY ORPEN, GEOFFREY H. RIDING, GRAHAM E. TAYLOR, EARL L. MUETTERTIES, TERENCE V. ASHWORTH, MICHAEL J. CHETCUTI, LOUIS J. FARRUGIA, JUDITH A. K. HOWARD, JOHN C. JEFFERY, RONA MILLS, GEOFFREY N. PAIN, F. GORDON A. STONE, PETER WOODWARD, MALCOLM H. CHISHOLM, F. A. COTTON, R. E. McCARLEY, T. R. RYAN, C. C. TORARDI, JOSÉ L. VIDAL, R. C. SCHOENING, W. E. WALKER, MARK S. WRIGHTON, JAMES L. GRAFF, JOHN C. LUONG, CAROL L. REICHEL, JOHN L. ROBBINS, GREGORY L. GEOFFROY, HENRY C. FOLEY, JOSEPH R. FOX, WAYNE L. GLADFELTER, ANTHONY POË, ALAN L. BALCH, R. J. PUDDEPHATT, J. A. CONNOR, H. A. SKINNER, RICHARD A. WALTON, M. DAVID CURTIS, LOUIS MESSERLE, NICEPHOROS A. FOTINOS, ROBERT F. GERLACH, ANDREW F. DYKE, STEPHEN R. FINNIMORE, SELBY A. R. KNOX, PAMELA J. NAISH, A. GUY ORPEN, GEOFFREY H. RIDING, GRAHAM E. TAYLOR, EARL L. MUETTERTIES, TERENCE V. ASHWORTH, MICHAEL J. CHETCUTI, LOUIS J. FARRUGIA, JUDITH A. K. HOWARD, JOHN C. JEFFERY, RONA MILLS, GEOFFREY N. PAIN, F. GORDON A. STONE, and PETER WOODWARD

Subjects
Metal-metal bonds--Congresses, Reactivity (Chemistry)--Congresses
Published
1981

603. A tetranuclear chlorido-bridged manganese(II) cluster with imidazole ligands

Author

A. Guy. Orpen, Christopher J. Adams, and Mukhtar A. Kurawa

Subjects
Crystallography, QD901-999
Abstract

The crystal structure of di-μ3-chlorido-tetra-μ2-chlorido-dichloridoocta(imidazole-κN)tetramanganese(II) ethanol 1.234 solvate, [Mn4Cl8(C3H4N2)8]·1.234C2H5O or [Mn4Cl8(Him)8]·1.234EtOH, where Him is imidazole (C3H4N2), is based upon two Mn4Cl4 cubes which share one face, and which each lack one manganese vertex, giving a Mn4Cl6 unit. This contains two different octahedral coordination environments for the Mn atoms. Mn1 is coordinated by four bridging chlorido ligands and two imidazole N atoms, whereas Mn2 is coordinated by three bridging and one terminal Cl and two imidazole N atoms. The remaining two Mn centres are generated by inversion symmetry. A partial occupancy solvent molecule (ethanol) is present. The crystal structure displays several N—H...Cl and N—H...O hydrogen bonds.

Published
2008
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