Compensation of steric demand by cation-pi interactions, cobaltocenium cations as guests in tetraurea calix[4]arene dimers

The affinities of ferrocene (2) and the cobaltocenium cation (3+), which have roughly the same size and differ in their charge, towards the inner cavity of the dimeric capsule formed by tetraurea calix[4]arene (1) were studied in C2D4Cl2 solutions. While 3+, which occupies more than 75% of the inter...

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Veröffentlicht in:	Organic & biomolecular chemistry 2003-06, Vol.1 (11), p.2011-2014
Hauptverfasser:	Frish, Limor, Vysotsky, Myroslav O, Böhmer, Volker, Cohen, Yoram
Format:	Artikel
Sprache:	eng
Schlagworte:	Calixarenes Cations - chemistry Cobalt - chemistry Diffusion Dimerization Ferrous Compounds - chemistry Hydrogen Bonding Magnetic Resonance Spectroscopy Metallocenes Organometallic Compounds - chemistry Phenols - chemistry Tetraethylammonium - chemistry Urea - analogs & derivatives Urea - chemistry
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