Formation of a polynuclear cobalt(ii) complex on a polydentate nanoplatform of carboxylated boltorn H20 |
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| Authors: | M. P. Kutyreva N. A. Ulakhovich F. Kh. Karataeva M. V. Rezepova G. A. Kutyrev |
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| Affiliation: | 1. Kazan (Volga Region) Federal University, ul. Kremlevskaya 18, Kazan, Tatarstan, 420008, Russia
2. Kazan National Research Technological University, ul. Karla Marksa 68, Kazan, Tatarstan, 420015, Russia
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| Abstract: | A method of synthesis of a polynuclear cobalt(II) complex with carboxylated Boltorn H20, a hyperbranched polyol of second generation, has been suggested. The logarithm of stability constant and the composition of the complex species BH20(OC(O)CH2CH2COO)12Co12 in a 50% acetone solution have been calculated from the electronic absorption spectra: log?? = 13.7 ± 0.2 and the composition M : L = 12 : 1. The IR spectroscopy and NMR (13C and 1H) point to the coordination of Co(II) ions not only at the surface of the molecule but also near its core. |
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