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 K₂Q_n (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.

中文翻译：

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利用盐复分解反应合成钕和Saβ-二酮硫族化物配合物的可能性的研究。Sm（III）意外还原为Sm（II）

摘要

钕（III）和sa（β）二碘-二酮化合物[Ln（Nacnac）I ₂（Тhf）₂ ]（Ln = Nd（I），Sm（II）; Nacnac ）之间的离子交换反应的可能性是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是四氢呋喃）和单和_二卤化钾K ₂ Q _n（Q = S，Se，Te; n= 1，2）在Thf中进行了研究。在这些条件下，二硫化氢配体不会发生碘配体的离子交换。配合物I与K ₂ Se的反应得到二价sa配合物[Sm（Nacnac）I（Thf）₂ ]（III）。提出了导致该复合物形成的步骤顺序，包括减少空间受阻的双（二酮）化合物。