Synthesis and Structure of Heterometallic Compounds with Dimethyl Pyridine-2,6-dicarboxylate

Bulhak Ion; Ureche Dumitru; Kravtsov Victor; Bourosh Pavlina

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BULHAK, Ion, URECHE, Dumitru, KRAVTSOV, Victor, BOUROSH, Pavlina. Synthesis and Structure of Heterometallic Compounds with Dimethyl Pyridine-2,6-dicarboxylate. In: Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya, 2023, vol. 49, pp. 77-85. ISSN -. DOI: https://doi.org/10.1134/S1070328422700245

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Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya

Volumul 49 / 2023 / ISSN - /ISSNe 1070-3284

Synthesis and Structure of Heterometallic Compounds with Dimethyl Pyridine-2,6-dicarboxylate

DOI:https://doi.org/10.1134/S1070328422700245

Pag. 77-85

Bulhak Ion¹, Ureche Dumitru¹, Kravtsov Victor², Bourosh Pavlina²

¹ Institute of Chemistry, MSU,
² Institute of Applied Physics, MSU

Disponibil în IBN: 8 iunie 2023

Rezumat

Dimethyl pyridine-2,6-carboxylate (L) was prepared by refluxing pyridine-2,6-dicarbonyl dichloride in methanol. The reactions of L with Ca(II), Sr(II), and Ba(II) salts and with cobalt(II) thiocyanate resulted in the formation of three heterometallic complexes: [CaL₃][Co(NCS)₄] (I), [SrL₃][Co(NCS)₄] (II), and [BaCoL₃(μ-NCS)₂(NCS-κN)₂] (III). The composition and structure of compounds L and I–III were determined by elemental analysis, infrared spectroscopy, and X-ray diffraction (CCDC nos. 2166019–2166022, respectively). It was found that isostructural Ca(II) and Sr(II) compounds are ionic and are formed by the [CaL₃]²⁺ and [SrL₃]²⁺ complex cations and [Co(SCN)₄]^2– complex anion, while the Ba(II) derivative is a molecular complex in which [BaL₃]²⁺ and [Co(NCS)₄]^2– moieties are linked by two (NCS)^– bridging units of the complex anions. In any of the three compounds, three tridentate L ligands are coordinated to the alkaline earth metal ion.

Cuvinte-cheie
and Ba(II)/Cо(II) complexes, dimethyl pyridine-2, 6-dicarboxylate, heterometallic Ca(II), IR spectra, Sr(II), X-ray diffraction

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