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 SM ISO690:2012BOUROSH, Pavlina, COVACI (CIOBĂNICĂ), Olga, LOZAN, Vasile, BULHAK, Ion. Asymmetric and symmetric cobalt(III) dioximates with pyrazinecarboxamide: Synthesis and crystal structure. In: Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya, 2012, vol. 38, pp. 461-470. ISSN -. DOI: https://doi.org/10.1134/S1070328412060036 |
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  Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya |
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| Volumul 38 / 2012 / ISSN - /ISSNe 1070-3284 | ||||||
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| DOI:https://doi.org/10.1134/S1070328412060036 | ||||||
| Pag. 461-470 | ||||||
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A number of novel complexes of cobalt(III) trans-dioximates containing pyrazinecarboxamide were obtained: [CoBr(DfgH) 2(Pzca)] · 0.125H 2O (I), [CoCl(NioxH) 2 (Pzca)] (II), [CoCl(DmgH)(NioxH)(Pzca)] · 0.5C 2H 5OH · 0.5H 2O (III), and [CoCl(DmgH) 2 (Pzca)] (IV), where DmgH, DfgH, and NioxH are the monoanions of dimethylglyoxime, diphenylglyoxime, and cyclohexane-1,2-dione dioxime, respectively; Pzca is pyrazinecarboxamide. Complexes I-III were examined by X-ray diffraction. In these complexes, the Co(III) atom has an octahedral environment with the pseudomacrocyclic fragment (DioxH)2 in the equatorial plane (DioxH is the α-dioxime residue). The latter is stabilized by hydrogen bonds O-H·O. In all the complexes, the organic ligand is monodentate and coordinated through one N atom of the heterocycle so that it is trans to the halide anion. |
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| Cuvinte-cheie Engineering controlled terms Cobalt, Hydrogen bonds, X ray diffraction Engineering uncontrolled terms Dimethylglyoxime, Dioxime, Equatorial planes, Halide anions, heterocycles, Monoanions, Monodentates, Octahedral environment, Organic ligands, Synthesis and crystal structure Engineering main heading Coordination reactions |
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