European Journal of Inorganic Chemistry

Cover image for Vol. 2014 Issue 33

Editor: Karen Hindson, Deputy Editor: Preeti Vashi

Impact Factor: 2.965

ISI Journal Citation Reports © Ranking: 2013: 10/45 (Chemistry Inorganic & Nuclear)

Online ISSN: 1099-0682

Associated Title(s): Angewandte Chemie International Edition, Chemistry - A European Journal, Chemistry – An Asian Journal, ChemistryOpen, ChemCatChem, Zeitschrift für anorganische und allgemeine Chemie

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Archive: 2010

Bidentate Chelates with Larger Spacers - Chelating Lewis acids prepared by double hydroalumination of dialkynylsilanes

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Bidentate Chelates with Larger Spacers

Chelating Lewis acids prepared by double hydroalumination of dialkynylsilanes.
Molecular oligoacceptors (chelating Lewis acids) are interesting compounds that are potentially applicable in phase-transfer processes, catalysis, or molecular recognition. Compounds with two or more coordinatively unsaturated tricoordinate aluminum or gallium atoms in a single molecule are particularly suitable for use as inverted chelating ligands. Chelating Lewis acids with a geminal arrangement of two acceptor functions have been shown to coordinate halide, thiolate, or benzoate anions. The remarkable efficacy of the chelating coordination of hydride ions by two aluminum atoms by the formation of persistent carbocations through C–H bond activation is also known. However, often the acceptor atoms occupy geminal positions at a bridging carbon atom, which results in relatively strained four-membered heterocycles upon coordination of single-atom donors. Therefore, a team of scientists led by Werner Uhl of the University of Münster (Germany) were very much interested in synthesizing compounds that have larger spacers between the acceptor functions in order to obtain more flexible backbones and hence better coordinating properties. The twofold hydroalumination of silicon-centered dialkynes was employed as a facile route for the preparation of such compounds, as reported in the European Journal of Inorganic Chemistry.

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No.Press ReleaseOriginal Communication

04/2011

Bidentate Chelates with Larger Spacers
Chelating Lewis acids prepared by double hydroalumination of dialkynylsilanes
(PDF)

Hydroalumination of Bis(alkynyl)silanes: Generation of Chelating Lewis Acids, Their Application in the Coordination of Chloride Ions and a 1,1-Carbalumination Reaction

Werner Uhl, University of Münster (Germany)


03/2011

Light Harvesting—A Big Step Forward
Iridium(III)–chromophore dyads with an unusually long-lived triplet excited state for triplet–triplet annihilation upconversion
(PDF)

Visible-Light Harvesting with Cyclometalated Iridium(III) Complexes Having Long-Lived 3IL Excited States and Their Application in Triplet–Triplet-Annihilation Based Upconversion

Jianzhang Zhao, Dalian University of Technology (China)


02/2011

Sensitive to Oxygen
Phosphorescent iridium(III) porphyrin complexes, new tunable oxygen indicators
(PDF)

Strongly Phosphorescent Iridium(III)–Porphyrins—New Oxygen Indicators with Tuneable Photophysical Properties and Functionalities

Sergey Borisov, Technische Universität Graz (Austria)


01/2011

Highway to Hydrogenase
A New Way to Obtain the Hydrogenase Cofactor Azadithiolate
(PDF)

A New Route to Azadithiolato Complexes

Thomas Rauchfuss, University of Illinois at Urbana-Champaign (USA)


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