Molecular Design using Electrostatic Interactions. Part 2: Synthesis and Properties of Flexible Dipodand Di- and Tetra-cations with Restricted Conformations. Charge, Shape and Size in Molecular Complexation

✍ Scribed by Peter J. Garratt; Yiu-Fai Ng; Jonathan W. Steed

• Book ID: 104202687
• Publisher: Elsevier Science
• Year: 2000
• Tongue: French
• Weight: 160 KB
• Volume: 56
• Category: Article
• ISSN: 0040-4020
• DOI: 10.1016/s0040-4020(00)00279-9

✦ Synopsis

AbstractÐA number of dipodand dications and tetracations were synthesised with structures based on 1,2,4,5-, penta-and hexa-substituted benzene, DABCO substituents providing the positive charges. The binding of these polycations in water to a variety of polyanions was examined with respect to the effect of the `spectator' counter cations on the observed association constants. The polycations precipitate ferriand ferrocyanide, in some cases preferentially for one oxidation state, and an X-ray crystallographic analysis of the complex between the tetracation 5 and ferricyanide reveals the complexity involved even in the molecular recognition of small, charged compounds.