| Conţinutul numărului revistei |
| Articolul precedent |
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 322 0 |
 SM ISO690:2012URECHE, Dumitru, BULHAK, Ion, SHOVA, Sergiu, BOUROSH, Pavlina. Pseudomacrocyclic Bis(dianilineglyoximato)cobalt(III) Complex Cations: Synthesis and Structures. In: Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya, 2022, vol. 48, pp. 333-343. ISSN -. DOI: https://doi.org/10.1134/S1070328422060070 |
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  Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya |
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| Volumul 48 / 2022 / ISSN - /ISSNe 1070-3284 | ||||||
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| DOI:https://doi.org/10.1134/S1070328422060070 | ||||||
| Pag. 333-343 | ||||||
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Abstract: Four coordination compounds (one of which exists as two polymorphs) are synthesized from cobalt(II) chloride hexahydrate, dianilineglyoxime (DAnH2), and various pyridyl ligands (L): [Co(DAnH)2(L1)2]Cl∙2dmf (I), [Co(DAnH)2(L2)2]Cl∙H2O (II), [Co(DAnH)2(L3)2]Cl (III and IV), and [Co(DAnH)2(L4)2]Cl (V) (L1 and L2 are 3-methylpyridine and 4-methylpyridine, respectively; L3 is ethyl nicotinate; and L4 is N,N-diethylnicotinamide). The reaction proceeds via the oxidation of a methanol solution containing СоCl2, DAnH2, and L in a molar ratio of 1 : 2 : 2 with oxygen. The compositions and structures of the compounds are determined by elemental analysis, IR spectroscopy, and X-ray diffraction (CIF files CCDC nos. 2122240–2122244, respectively). Compounds I–V are ionic and formed by centrosymmetric complex cations [Co(DAnH)2(L)2]+ and anions Сl–. The mononuclear complex cations with the coordination mode CoN6 are octahedral. Two monodeprotonated ligands DAnH– coordinate to the metal ion via the bidentate chelating mode and are bound to each other by two hydrogen bonds О–Н∙∙∙О, and two ligands L supplement the coordination polyhedron of the central atom. The components in the crystals are mainly joined by intermolecular hydrogen bonds. |
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| Cuvinte-cheie cobalt(III) complexes, dianilineglyoxime, IR spectra, pyridine derivatives, X-ray diffraction |
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