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 SM ISO690:2012KOTOVAYA, A., SHOVA, Sergiu, SIMONOV, Yurii A., GULYA, Aurelian. New complexes of tris(2-aminoethanolato-O,N)cobalt(III) sulfates: Synthesis and structure. In: Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya, 2009, vol. 35, pp. 226-233. ISSN -. DOI: https://doi.org/10.1134/S1070328409030117 |
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  Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya |
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| Volumul 35 / 2009 / ISSN - /ISSNe 1070-3284 | ||||||
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| DOI:https://doi.org/10.1134/S1070328409030117 | ||||||
| Pag. 226-233 | ||||||
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The reaction of [Co(Etm)3] • 3H2O (I) with sulfuric acid affords [Co(HEtm)3]2(SO4) 3 • 4H2O (II). The change in the synthesis procedure (the direction interaction of cobalt(II) sulfate with β-aminoethanol (HEtm)) makes it possible to isolate [Co(HEtm)3](SO 4)(HSO4) • H2O (III) and {[Co(HEtm) 3][Co(Etm)3]}2(SO4)3 • 7.75H2O (IV). The X-ray diffraction analyses of compounds II-IV show that all of them are of the ionic type. In compounds II and III, the ionic structure consists of the [Co(HEtm)3]3+ cations and sulfate anions in a ratio of 2: 3 and 1: 2, respectively. The basic difference in compounds II and III is the different degrees of deprotonation of the acid residues. In complex II, two anions SO 4 2- are doubly deprotonated. In complex III, of the four anions found in the independent part of the unit cell of the sulfate anion two anions are monodeprotonated. In structure IV, two crystallographically independent complexes [Co(HEtm) 3]3+ and [Co(Etm)3] are joined into a dimer through the O-H⋯O hydrogen bonding. |
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| Cuvinte-cheie Engineering controlled terms Acids, cobalt, complexation, hydrogen, Hydrogen bonds, Negative ions, sulfuric acid, X ray diffraction analysis Engineering uncontrolled terms Acid residues, Hydrogen bondings, Ionic structures, Sulfate anions, Synthesis procedures, Unit cells Engineering main heading Cobalt compounds |
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