Cover Gallery

Cover Picture: Photocatalytic Water Oxidation by a Mixed-Valent MnIIIMnIVO3 Manganese Oxo Core that Mimics the Natural Oxygen-Evolving Center (Angew. Chem. Int. Ed. 10/2014) (p 11182)
Rami Al-Oweini, Andrea Sartorel, Bassem S. Bassil, Mirco Natali, Serena Berardi, Franco Scandola, Ulrich Kortz, Marcella Bonchio
Published Online: July 27 2014
DOI: 10.1002/anie.201404664

The engine of aerobic life

on earth is a tetramanganese oxo cluster at the very heart of Photosystem II (PS II) in green plants, algae, and photosynthetic bacteria. In their Communication on page 11182 ff, F. Scandola, U. Kortz, M. Bonchio et al. have identified a unique hybrid set of ligands to provide the first functional analogue of the PS II oxygen-evolving center that works in an artificial environment (Cover picture: Rami Al-Oweini).

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Inside Front Cover: Polyoxometalates Made of Gold: The Polyoxoaurate [AuIII4AsV4O20]8- (Angew. Chem. Int. Ed. 10/2010) (p 1698)
Natalya V. Izarova, Nina Vankova, Thomas Heine, Rosa Ngo Biboum, Bineta Keita, Louis Nadjo, Ulrich Kortz
Published Online: Feb 19 2010 12:15PM
DOI: 10.1002/anie.201000767
A brand new line of gold jewelry has been designed in the world of polyoxometalate chemistry. In their Communication on page 1886 ff, U. Kortz et al. identify the first discrete inorganic polyoxoaurate [AuIII4AsV4O20]8- with a tetrameric structure and square-planar coordinated AuIII ions linked by oxo and arsenate bridging ligands (see structure; Au yellow, As blue, O red). The facile open-beaker synthetic procedure appears to be a convenient and general method for making a variety of gold-based inorganic oxo complexes. Mr. Rami Al-Oweini (PhD Student, Jacobs University) is thanked for his creative design.

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Cover Picture: Composite Cover Picture with Contributions from Five Authors (Eur. J. Inorg. Chem. 34/2009) (p NA)
Marcella Bonchio, Oxana A. Kholdeeva, Josep M. Poblet, Michael T. Pope, Toshihiro Yamase
Published Online: Nov 17 2009 10:01AM
DOI: 10.1002/ejic.200990093
Volume 2009 Issue 34 , Pages 5055 – 5276 (December 2009)
Special Issue: Polyoxometalates
Issue Edited by Ulrich Kortz

2005The cover picture depicts not only the internationality of the polyoxometalate community, well-reflected at the International Polyoxometalate Symposium (Jacobs University, Bremen July 28-August 1, 2009) on which this cluster issue is based, but also the huge scope of these compounds. The diversity of aspects in this issue is highlighted on the cover by a selection of graphics placed over the country of origin of the authors. Structural features (M. T. Pope et al.), mechanisms of formation (J. Poblet et al.), homogeneous oxidation catalysis (O. Kholdeeva et al.), design of enantioselective catalysts (M. Bonchio et al.) and photochemistry based analytical techniques (T. Yamase et al.) are some of the topics you will find. Mr Rami Al-Oweini (Jacobs University) is thanked for his creative design.

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The Fascination of Polyoxometalates (p 5055)
Karen Hindson
Published Online: Nov 20 2009 9:19AM
DOI: 10.1002/ejic.200990097
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Polyoxometalates (p 5056)
Ulrich Kortz
Published Online: Nov 17 2009 10:01AM
DOI: 10.1002/ejic.200990096

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Cover Picture: The Tungstogermanate [Ce20Ge10W100O376(OH)4(H2O)30]56-: A Polyoxometalate Containing 20 Cerium(III) Atoms (Angew. Chem. Int. Ed. 32/2007) (p 5985)
Bassem S. Bassil, Michael H. Dickman, Isabella Römer, Bernd von der Kammer, Ulrich Kortz
Published Online: Aug 3 2007 3:37AM
DOI: 10.1002/anie.200790155

covers_angewandte_9_07A gigantic polyoxometalate [Ce20Ge10W100O376(OH)4(H2O)30]56- (1) was obtained in a classic one-pot synthesis from CeIII ions and the trilacunary precursor [α-GeW9O34]10- in water, as described by U. Kortz and co-workers in their Communication on page 6192 ff. The cover picture shows a possible mechanism of formation by stepwise self-assembly, beginning with the formation of Ce2GeW10 Keggin units, followed by arrangement of five such units into chiral, enantiomeric {Ce2GeW10}5 species, and then dimerization of the R and S forms to give 1.

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Inside Front Cover: Organoruthenium derivative of the cyclic [H7P8W48O184]33– anion: [{K(H2O)}3{Ru(p-cymene)(H2O)}4P8W49O186(H2O)2]27–
Sib Sankar Mal, Nadeen H. Nsouli, Michael H. Dickman and Ulrich Kortz,  Dalton Trans., 2007, 2627

covers_dalton_707[{K(H2O)}3{Ru(p-cymene)(H2O)}4P8W49O186(H2O)2]27– ( 1) represents the first organometallic derivative of the large, crown-shaped tungstophosphate [H7P8W48O184]33– (P8W48), and an unusual WO6 group with four equatorial, terminal ligands is also grafted to P8W48.

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