The Pedersen Memorial Issue

The Discovery of Crown Ethers.- Tbe Productive Scientific Career of Charles Pedersen (October 3, 1904-0ctober 26, 1989).- Free Energy Perturbation Simulations of Cation Binding to Valinomycin.- An Approach to Channel Type Molecular Structures. 1. Synthesis of Bouquet-Shaped Molecules Based on an [18]-O6 Polyether Macrocycle.- Consequences of the 'Pedersen Papers' on Crown Type Chemistry at Würzburg and Bonn Universities: From Heteroaromatic Crowns and Podands to Large Molecular and Crystalline Cavities Including Multisite Receptors. Cascade Molecules, Chromoionophores, Siderophores, Surfactant-Type, and Extreme Ligands.- Conformational Mobility in Chemically-Modified Cyclodextrins.- Högberg Compounds with a Functionalized Box-Like Cavity.- Influence of Quatemary Oniurn Salts, Crown Ethers and Cryptands on Olefin Epoxidations Promoted by HOC1/C1O- in the Presence of Mu(III)-tetrakis(2,6-dichlorophenyl)porphyrin Chloride.- Macrobicyclic Aminals.- Tribracchial Lariat Ethers: Syntheses, Binding, and Formation of an Intramolecular Macroring-Sidearm Complex in the Absence of Any Cation.- Bis(crown ether)s as Na+-K+ ATPase Model in a Liquid Membrane.- Effect of Solvent upon Competitive Liquid-Liquid Extraction of Alkali Metal Cations by Isomeric Dibenzo-16-crown-5-oxyacetie Acids.- Potassium Selective Chromoionophores.- Molecular Dynamics and the Structure of Macrocycles - Solvent Acetonitrile Interactions.- Influence of Solvent Properties on Cation-Macrocycle Complexation: Cesium Cryptates.- Li+(TMPAND)Na-: The First Alkalide Prepared from an Azacage Complexant.- Evaluation of a Direct 1H NMR Method for Determining log K and ?H Values for Crown Ether-Alkylammonium Cation Complexation.- Cation and Anion Coordination Chemistry of Palladium(II) with Polyazacycloalkanes. Thermodynamic and Structural Studies.- The Crystal Structure of Dibenzo-14-Crown-4, a Preorganized Basis of Square Pyramid Coordination for Lithium Ions.- On the Solid-State Conformations of 18-crown-6 Complexes.- Structure and Thermodynamic Aspects of Macrobicyclic Polyether-Metal Ion Interactions.- The Crystal and Molecular Structures of Bridged Spherands: The Host C52H52O8, Its Complex C52H52O8Li+, and the Complexes C50H48O6?Li+ and C52H52O6?Li+.- Complexes between Disubstituted Benzo-15-Crown-5 Ligands and Sodium or Potassium Bromides.- X-Ray Structural Study of a Zine(II) Inclusion Complex of a Phenolate-pendant Cyclam.- Structural Definition of Chemical Templates and the Prediction of New and Unusual Materials.- Announcements.- Author Index.