Abstract
The possibilities of the ion exchange reactions between the neodymium(III) and samarium(III) diiodo-β-diketiminate complexes [Ln(Nacnac)I2(Тhf)2] (Ln = Nd (I), Sm (II); Nacnac is HC\(\left\{ {{\text{C}}\left( {{\text{Me}}} \right){\text{N}}\left( {{\text{2}},{\text{6}} - {{{\text{C}}}_{{\text{6}}}}{\text{H}}_{{\text{4}}}^{i}{\text{P}}{{{\text{r}}}_{{\text{2}}}}} \right)} \right\}_{{\text{2}}}^{-};\) Thf is tetrahydrofuran) and potassium mono- and dichalcogenides K2Qn (Q = S, Se, Te; n = 1, 2) in Thf are studied. The ion exchange of iodide ligands by dichalcogenide ligands does not occur under these conditions. The reaction of complex I with K2Se affords the divalent samarium complex [Sm(Nacnac)I(Thf)2] (III). The sequence of the steps leading to the formation of this complex, including the reduction of the sterically hindered bis(diketiminate) complex, is proposed.
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This work was supported by the Russian Science Foundation, project no. 16-13-10294.
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Translated by E. Yablonskaya
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Mironova, O.A., Sukhikh, T.S., Konchenko, S.N. et al. Study of the Possibility of Using Salt Metathesis Reactions for the Synthesis of the Neodymium and Samarium β-Diketiminate Chalcogenide Complexes. Unexpected Reduction of Sm(III) to Sm(II). Russ J Coord Chem 46, 241–250 (2020). https://doi.org/10.1134/S1070328420030057
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DOI: https://doi.org/10.1134/S1070328420030057