Outer-sphere interactions between octahedral chiral cobalt(iii) complexes and water-soluble calixarenes

Autor:	E. Kh. Kazakova, Igor S. Antipin, A. I. Konovalov, V. P. Gubskaya, V. V. Skripacheva, Margit Gruner, S. E. Solv\\'eva, A. R. Mustafina, W. D. Habicher
Rok vydání:	2004
Předmět:	Conductometry Inorganic chemistry chemistry.chemical_element General Chemistry Resorcinarene chemistry.chemical_compound Crystallography Sulfonate chemistry Calixarene Proton NMR Outer sphere electron transfer Two-dimensional nuclear magnetic resonance spectroscopy Cobalt
Zdroj:	Russian Chemical Bulletin. 53:1511-1519
ISSN:	1066-5285
DOI:	10.1023/b:rucb.0000046249.10018.db
Popis:	The structures and stability of outer-sphere associates of sulfonate derivatives of thiacalix[4]arene and calix[4]resorcinarene with coordinatively saturated cobalt(iii) bis- and tris-chelates ([Co(L-His)2]+, [Co(en)2ox]+, [Co(en)3]3+, and [Co(dipy)3]3+) were compared based on the data from UV, CD, 1D 1H NMR, and 2D (2D NOESY) 1H NMR spectroscopy and conductometry. Outer-sphere association is accompanied by partial penetration of the chelate rings of the complexes into the hydrophobic cavity of calixarene, which induces changes in the spectroscopic and spectropolarimetric properties of the cobalt(iii) complexes.
Databáze:	OpenAIRE
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