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 SM ISO690:2012KOTOVAYA, A., SHOVA, Sergiu, SIMONOV, Yurii A., ROSHU, T., SANDU, Ion Gabriel, GULYA, Aurelian. New crystal forms of tris(2-aminoethanolato-O,N)cobalt(III): Structures and propertie. In: Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya, 2006, vol. 32, pp. 841-847. ISSN -. DOI: https://doi.org/10.1134/S1070328406110121 |
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  Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya |
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| Volumul 32 / 2006 / ISSN - /ISSNe 1070-3284 | ||||||
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| DOI:https://doi.org/10.1134/S1070328406110121 | ||||||
| Pag. 841-847 | ||||||
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Crystal forms of cobalt(III) tris(2-aminoethanolate) hydrates, i.e., red cubic crystals of the composition fac-[Co(NH2CH2CH 2O)3] • 5.44H2O (fac-I • 5.44H 2O) and blue prismatic crystals of the composition mer-[Co(NH 2CH2CH2O)3] • 3H2O (mer-I • 3H2O) were studied by the 59Co, 13C NMR and X-ray diffraction methods. It was found that mer-[Co(NH2CH2CH2O)3] • 3H 2O (mer-I • 3H2O) is a new pseudopolymorphic modification of fac-[Co(NH2CH2CH2O) 3] • 3H2O (fac-I • 3H2O), while fac-I • 3H2O represents a new polymorphic modification of the complex mer-[Co(NH2CH2CH2O)3] • 3H2O (mer-I • 3H2O) described previously. The comparative analysis of the spectra revealed dynamic equilibrium between these geometric isomers; the fac-isomer is stable in aqueous solutions. |
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| Cuvinte-cheie Engineering controlled terms Chemical modification, crystal structure, Isomers, Nuclear Magnetic Resonance, Organometallics, X ray diffraction Engineering uncontrolled terms Comparative analysis, Crystal forms, Prismatic crystals, Pseudopolymorphic modification Engineering main heading Cobalt compounds |
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