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The electrochemical behaviour of [Co(sep)]3+ bound with p-sulfonatothiacalix[4]arene and tetracarboxy-p-sulfonatocalix[4]arene in correlation with inclusive and non-inclusive binding modes |
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| Authors: | Viktoriya Skripacheva Vladimir Burilov Asiya Mustafina Olga Kataeva Margit Gruner Vitaliy Yanilkin Alexey Stepanov Viktor Syakaev Rustem Zairov Svetlana Soloveva Wolf Habicher Alexander Konovalov |
| Institution: | 1. A.E. Arbuzov Institute of Organic and Physical Chemistry, Arbuzov Street, 8, 420088, Kazan, Russia 2. Institute of Organic Chemistry, Technical University, Bergshtrasse Street, 66, 01069, Dresden, Germany |
| Abstract: | The comparative study of the ion-pairing of Co(III) sepulchrate (Co(sep)]3+) with p-sulfonatothiacalix4]arene and p-sulfonatocalix4]arene tetracarbonic acid by 1H NMR and pH-metric data in solution and X-ray data in solid state elucidates pH dependent effect of carboxylate groups on the stoichiometry and the mode of the ion pairing. The electrochemical data of Co(sep)]3+ bound with both calix4]arenes have been analyzed in the correlation with stoichiometry and the mode of their binding. The pH-dependent effect of tetracarboxy-p-sulfonatocalix4]arene on the electrochemical behavior of Co(sep)]3+ has been found to correlate with the participation of carboxylate groups in the host?Cguest binding. |
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