Behavior of Co2+ Cations in the Aqueous and Alcoholic Solution of CoCl2·6H2O

P. Petkova and V. Nedkov Shumen University "Konstantin Preslavsky", 115 Universitetska Str., 9712 Shumen, Bulgaria

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We investigated the optical properties of Co2+ cations in the aqueous and alcoholic solution of CoCl2·6H2O at room temperature. We measured the absorption spectra of these solutions in the spectral region 395-800 nm. The Racah parameters and the exchange integrals of the aqueous complex [Co(H2O)6]2+ are calculated. The parameters Dt and Ds are also calculated on the basis of our experimental data. The parameters δ σ and δπ which are connected with the symmetry of this complex are also determined.

DOI: 10.12693/APhysPolA.123.207 PACS numbers: 78.15.+e, 78.40.Dw