Search Results

You are looking at 1 - 10 of 3,626 items :

Clear All

Carbonyl(diphenylcyclopentadienyl)- und Carbonyl(tetraphenylcyclopentadienyl)rhodium(I) Komplexe Carbonyl(diphenylcyclopentadienyl)- and Carbonyl(tetraphenylcyclopentadienyl)rhodium(I) Complexes Herbert Schumann und Susanne Stenz Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 135, D-10623 Berlin, Germany Sonderdruckanforderungen an Prof. Dr. H. Schumann. E-mail: Schumann@chem.tu-berlin.de Z. Naturforsch. 56 b, 1293-1296 (2001); eingegangen am 7. September 2001 (Diphenylcyclopentadienyl)rhodium Complexes, (Tetraphenylcyclopentadienyl)rhodium

(Y]-Cyclooctatetraen)(y]-cyclooctatrienyl)rhodium(I) und einige verwandte Rhodiumkomplexe (>7-Cyclooctatetraene)(??-cyclooctatrienyl)rh.odium(I) and Some Related Rhodium Complexes Hans-Otto Stühler* Institut für Anorganische und Analytische Chemie der Technischen Universität Berlin, Straße des 17. Juni 135, D-1000 Berlin 12 Z. Naturforsch. 35b, 843-847 (1980); eingegangen am 19. März 1980 (Cyclooctatetraene)(cyclooctatrienyl)rhodium(I), Synthesis, XH NMR Spectra Reactions of [(COD)RhCl]2 (COD = 1,5-cyclooctadiene) with n-butyllithium in THF and isoprene

Investigations on the Redox-Photochromism of Rhodium Acetonitrile Complexes Günther Knör Institut für Anorganische Chemie, Universität Regensburg, D-93040 Regensburg, Germany Reprint requests to Dr. G. Knör. E-mail: guenther.knoer@chemie.uni-regensburg.de Z. Naturforsch. 58b, 741 – 744 (2003); received May 16, 2003 The spectroscopic and photochromic properties of the dinuclear rhodium complex Rh2L10X4 (L = CH3CN, X− = BF−4 ) have been studied in acetonitrile solution. A reversible wavelength- dependent photoredox disproportionation of the dark

INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING Volume 3 2005 Article A34 Kinetics of Adiponitrile Hydrogenation Over Rhodium-Alumina Catalysts Renzo Di Felice∗ Aldo Bottino† Gustavo Capannelli‡ Antonio Comite∗∗ Tommaso Di Felice†† ∗University of Genova, difelice@dichep.unige.it †aldo.bottino@unige.it ‡gustavo.capannelli@unige.it ∗∗antonio.comite@unige.it ††tommaso.difelice@unige.it ISSN 1542-6580 Copyright c©2005 by the authors. All rights reserved. Kinetics of Adiponitrile Hydrogenation Over Rhodium-Alumina Catalysts Renzo Di Felice, Aldo Bottino, Gustavo

501 Pure Appl. Chem., Vol. 78, No. 2, pp. 501–509, 2006. doi:10.1351/pac200678020501 © 2006 IUPAC Rhodium-catalyzed asymmetric hydrogenation using self-assembled chiral bidentate ligands* James M. Takacs‡, Kittichai Chaiseeda, Shin A. Moteki, D. Sahadeva Reddy, Di Wu, and Kusumlata Chandra Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588, USA Abstract: The chirality-directed self-assembly of bifunctional subunits around a structural metal—typically, zinc(II)—is used to form a heteroleptic complex in which a second set of ligating groups

Rhodium-catalyzed enantioselective hydroacylation reactions allow rapid access to chiral substituted ketones. However, due to the low reactivity of disubstituted alkenes in intermolecular versions of this process, only a small number of asymmetric intermolecular reactions have been described. Strategies employed to avoid reactivity issues include the use of norbornadienes, linear dienes, acrylamides, and allenes as the alkene components. In addition, our laboratory has recently reported the rhodium-catalyzed enantioselective inter-molecular alkyne hydroacylation reaction, leading to the formation of enone products via a kinetic resolution procedure.

Synthese von Alkin-, Alkinyl- und Vinyliden-Rhodium-Komplexen ausgehend von Alkinyltriphenylsilanen [1] Synthesis of A lkyne, Alkynyl and Vinylidene Rhodium Complexes from A lkynyltriphenylsilanes [1] M atthias Baum , B ettina W indmüller, Helm ut W erner* Institut für Anorganische Chemie der Universität Würzburg, Am Hubland, D-97074 Würzburg Herrn Prof. Dr. R. Schmutzler zum 60. Geburtstag gewidmet Z. Naturforsch. 49b, 859-869 (1994); eingegangen am 4. März 1994 Rhodium(I) and Rhodium(III) Complexes. Alkyne, Alkynyl and Vinylidene Ligands, Isomerisation

Enantioselective Hydrosilylation with a Chiral N-Heterocyclic Carbene Complex of Rhodium(I) [1] Sandra C. Zinnera, Mei Zhang-Preßeb, Wolfgang A. Herrmanna,b, and Fritz E. Kühna,b Contribution of the a Chair of Inorganic Chemistry and b Molecular Catalysis, Catalysis Research Center of the Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany Reprint requests to Fritz E. Kühn. E-mail: fritz.kuehn@ch.tum.de Z. Naturforsch. 2009, 64b, 1607 – 1611; received October 5, 2009 Dedicated to Professor Hubert Schmidbaur on the occasion of his 75th

-sensitive reaction, so it can be used to find out the size dependence of the catalytic properties of metal NPs in numerous reactions proceeding with hydrogen involvement. This paper is devoted to the synthesis and study of promising catalysts based on metal NPs: palladium and rhodium – for processes occurring with hydrogen involvement. The main feature of chemical properties of metal NPs is their high reactivity, so they have very short lifetime. The NPs aggregate and react easily with different chemical compounds. Therefore, the great attention is paid to their stability in

Tri(3-pyridyl)phosphine as Amphiphilic Ligand in the Rhodium-catalysed Hydroformylation of 1-Hexene Wolfgang H. Meyera,b, Richard J. Bowena, and David G. Billinga a School of Chemistry, University of the Witwatersrand, PO Wits 2050, Johannesburg, South Africa b now: Sasol Technology Research and Development, PO Box 1, Sasolburg, 1947, South Africa Reprint requests to Dr. W. H. Meyer. Fax: ++27 11 522 2034. E-mail: wolfgang.meyer@sasol.com Z. Naturforsch. 2007, 62b, 339 – 345; received November 23, 2006 Dedicated to Prof. Helgard G. Raubenheimer on the occasion of