Perspectives in Coordination Chemistry

Editors: Alan F. Williams Carlo Floriani Andre E. Merbach

Verlag Helvetica Chimica Acta, Basel

Weinheim • New York • Basel • Cambridge

CONTENTS

Contributions of Structural Chemistry to the Understanding of Chemical 1 Reactivity H.-B. Bürgi Laboratorium für Kristallographie, Universität Bern, Freiestrasse 3, 3012 Bern, Switzerland

High-Affinity Ligands for the Complexation of Metal Cations and Molecules 31 C. Seel and F. Vögtle Institut für Organische Chemie und Biochemie der Universität Bonn, Gerhard-Domagk-Strasse 1, 5300 Bonn 1, Germany

Elucidation of Reaction Pathways through Volume Profile Analysis 55 R. van Eldik Institute for Inorganic Chemistry, University of Witten/Herdecke, Stockumer-Strasse 10, 5810 Witten, Germany

Molecular Clusters and Ligands: a Powerful Interplay 67 P. Braunstein Laboratoire de Chimie de Coordination, URA 416 CNRS, Universite Louis Pasteur, 4, rue Blaise Pascal, 67000 Strasbourg Cedex, France

Clusters, Chains, and Layered Molecules: the Chemist's Way to Magnetic 109 Materials

A. Caneschi, D. Gatteschi, L. Pardi, and R. Sessoli Department of Chemistry, University of Florence, via Maragliano 77, 50144 Florence, Italy

Design of Ligands with Neutral Oxygen Donors: The Basis of Metal Ion 129 Size-Based Selectivity R.D. Hancock Centre for Molecular Design, Department of Chemistry, University of the Witwatersrand, Wits 2050, lohannesburg, South Africa

'Complexes as Metals' and 'Complexes as Ligands': Synthetic Strategies to 153 Design Supramolecular Compounds Featuring Made-to-Order Luminescent and Redox Properties G. Denti and S. Serroni Laboratorio di Chimica Inorganica, Istituto di Chimica Agraria dell'Universitä, 56124 Pisa, Italy

S. Campagna Dipartimento di Chimica Inorganica e Struttura Molecolare dell'Universitä, 98166 Messina, Italy

A. Juris, M. Ciano, and V. Balzani Dipartimento di Chimica 'G. Ciamician' dell'Universitä and Istituto FRAE-CNR, 40126 Bologna, Italy

The Crystal Engineering of Non-Molecular Metal Compounds with Anionic 165 Calcogenide Ligands E2" and RE /. G. Dance School of Chemistry, University of New South Wales, P.O. Box 1, Kensington, NSW 2033, Australia

High-Resolution Optical Spectroscopy of Coordination Compounds 183

G. Frei, M.G. Colombo, and H.-U. Güdel Institute of Inorganic and Physical Chemistry, University of Bern, Freiestrasse 3, 3000 Bern 9, Switzerland

From Crowns to Clefts: Synthetic Analogues for Type 3 Copper Centres 203 D. E. Fenton Department of Chemistry, The University, Sheffield, S3 7HF, U.K.

Coordination Chemistry in the Solid State: Cluster and Condensed Halides 219 of the Early Transition Metals* J.D. Corbett Department of Chemistry, Iowa State University, Arnes, IA 50011, U.S.A.

Intermediate Complexes in Chemical and Biological Nitrogen Fixation* 233 A.E. Shilov Institute of Chemical Physics, lAlAil Chernogolovka, Russia

Towards an Understanding of the Electronic Structure of Fe4S4 High-Potential 245 Iron-Sulfur Proteins C. Luchinat, S. Ciurli, and F. Capozzi Institute of Agricultural Chemistry, University of Bologna, Viale Berti Pichat 10, 40127 Bologna, Italy

Synthetic and Mechanistic Aspects of Exchange of CyclometaUated Ligands in 271 Palladium and Platinum(II) Complexes A.D.Ryabov Division of Chemistry, G. V. Plekhanov Russian Economic Academy, Stremyanny per. 28, 113054 Moscow, Russia

Structure, Composition, and Properties of High-Temperature Cuprate 293 Superconductors / . K. Burdett Department of Chemistry, The James Franck Institute, and the NSF Center for Superconductivity, The University of Chicago, Chicago, IL 60637, U.S.A.

The Delta Bond - An Old Story with a New Twist* 321 F. A. Cotton Department of Chemistry and Laboratory for Molecular Structure and Bonding, Texas A & M University, College Station, Texas 77843, U.S.A.

Preorganization of the Seeond Coordination Sphere 333 M. W. Hosseini Laboratoire de Chimie de Coordination Organique, Institut Le Bei, Universite Louis Pasteur, 4, rue Blaise Pascal, 67000 Strasbourg, France

The Role of Solvents in Coordination Chemical Phenomena 345 K. Burger Department oflnorganic and Analytical Chemistry, Attila Jözsef University, P.O. Box 440, 6701 Szeged, Hungary

Coordination Compounds and Genes 381 R.J.P. Williams Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, U.K.

Transition Metal Acyl, Iminoacyl Chemistry. Observation of Some Unusual 407 Rearrangements in Mo and W Complexes E. Carmona, L. Contreras, P.J. Daff, A. Pizzano, and L.J. Sänchez Departamento de Quimica Inorgänica, Institute de Ciencia de Materiales, Universidad de Sevilla-CSIC, 41071 Sevilla, Spain

Hydration of Ions and Neutron Scattering 439 / . E. Enderby H.H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 ITL, U.K.

From Coordination Chemistry to Supramolecular Chemistry 447 J.-M. Lehn Institut Le Bei, Universite Louis Pasteur, 4, rue Blaise Pascal, 67000 Strasbourg, France

Ruthenium-Catalyzed Hydrogen-Transfer Reactions and Their Application to 463 Oxidation of Alcohols and Reduction of Ketones and Imines J.-E. Bäckvall, R. L. Chowdhury, U. Karlsson, and Guo-zhi Wang Department of Organic Chemistry, University of Uppsala, Box 531, 75121 Uppsala, Sweden

Reprinted from Pure Appl. Chem. by permission of IUPAC.