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 SM ISO690:2012RIJA, Andrei, NICOLESCU, Alina Florica, SORAN, Albert P., COROPCEANU, Eduard, BULHAK, Ion, BOLOGA, Olga, DELEANU, Călin, BOUROSH, Pavlina. Cobalt(III) dimethylglyoximates containing selenourea and an unusual diselenourea ligand: Synthesis and structures. In: Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya, 2011, vol. 37, pp. 757-765. ISSN -. DOI: https://doi.org/10.1134/S1070328411090077 |
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  Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya |
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| Volumul 37 / 2011 / ISSN - /ISSNe 1070-3284 | |
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| DOI:https://doi.org/10.1134/S1070328411090077 | |
| Pag. 757-765 | |
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The complexes [Co(DH)2(Seu) y (Se-Seu) z ]2X • mSolv (DH is the dimethylglyoxime monoanion, Seu is selenourea, and X is [TiF6]2-, [ZrF6] 2-) were obtained from the system CoX • 6H2O-DH 2-Seu in DMF-MeOH or MeOH-H2O and examined by UV, IR, and NMR spectroscopy and X-ray diffraction. Unexpectedly, the ligand Se-Seu (the oxidized form of selenourea) was detected on the axial coordinate, partially replacing selenourea. The complexes were formulated as [Co(DH) 2(Seu)1.75(Se-Seu)0.25]2[TiF 6] • H2O (I) and [Co(DH)2(Seu)(Se-Seu)] 2[ZrF6] • 3H2O (II). The complex cations in I and II have trans-octahedral structures. Their crystal structures are made up of the complex Co3+ cations and the outer-sphere MF 6 2- anions (M = Ti(IV) (I) and Zr(IV) (II)) held together by electrostatic interactions and hydrogen bonds; water of crystallization is also involved in hydrogen bonding. |
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| Cuvinte-cheie Engineering controlled terms Chelation, cobalt, Hydrogen bonds, ligands, Nuclear magnetic resonance spectroscopy, Positive ions, Spheres, Titanium compounds, X ray diffraction, zirconium, Zirconium compounds Engineering uncontrolled terms Axial coordinates, Complex cation, dimethylglyoxime, Monoanions, Selenourea, Water of crystallization Engineering main heading Cobalt compounds |
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