Geometric Isomers of Cobalt(II) and Cobalt(III) Picolinates in Solution

Novitsky Ghenadie; Silagi-Dumitresku I.; Paraskivesku A.; Gulya Aurelian

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2023-10-24 12:23

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NOVITSKY, Ghenadie, SILAGI-DUMITRESKU, I., PARASKIVESKU, A., GULYA, Aurelian. Geometric Isomers of Cobalt(II) and Cobalt(III) Picolinates in Solution. In: Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya, 2001, vol. 27, pp. 722-725. ISSN -. DOI: https://doi.org/10.1023/A:1012306426582

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Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya

Volumul 27 / 2001 / ISSN - /ISSNe 1070-3284

Geometric Isomers of Cobalt(II) and Cobalt(III) Picolinates in Solution

DOI:https://doi.org/10.1023/A:1012306426582

Pag. 722-725

Novitsky Ghenadie¹, Silagi-Dumitresku I.², Paraskivesku A.³, Gulya Aurelian¹

¹ Moldova State University,
² Babeș-Bolyai University,
³ Alexandru Ioan Cuza University of Iaşi

Disponibil în IBN: 7 septembrie 2023

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Cobalt complexes with picolinic acid (HPic), namely, [Co^II(Pic)₂(H₂O)₂] · 2H₂O (I) and [Co^III(Pic)₃] · H₂O (II) are studied using ¹H and ¹³C NMR spectroscopy. Compound I exists in solution as three geometric isomers, namely, trans-trans-trans, cis-trans-cis, and trans-cis-cis (molar ratio 4 : 2 : 1, respectively). According to ¹³C NMR data, compound II exists in solution as a mer-isomer. The relative energy stability of the isomers was estimated using the molecular mechanics method