[해외논문]Neutral and cationic trimethylsilylmethyl complexes of the rare earth metals supported by a crown ether: synthesis and structural characterization
Arndt, Stefan
(Institut fü)
,
Zeimentz, Peter M.
(r Anorganische Chemie und Analytische Chemie)
,
Spaniol, Thomas P.
(Institut fü)
,
Okuda, Jun
(r Anorganische Chemie und Analytische Chemie)
,
Honda, Masaru
(Institut fü)
,
Tatsumi, Kazuyuki
(r Anorganische Chemie und Analytische Chemie)
The synthesis of a series of thermally robust, isolable trimethylsilylmethyl complexes of the rare earth metals stabilized by 12-crown-4 [Ln(CH2SiMe3)3(12-crown-4)] (Ln = Sc, Y, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) is reported. The crystallographically c...
The synthesis of a series of thermally robust, isolable trimethylsilylmethyl complexes of the rare earth metals stabilized by 12-crown-4 [Ln(CH2SiMe3)3(12-crown-4)] (Ln = Sc, Y, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) is reported. The crystallographically characterized yttrium and lutetium complexes [Ln(CH2SiMe3)3(12-crown-4)] exhibit facial coordination of the crown ether at the neutral lanthanide trialkyl unit. The coordination geometry can be derived from a capped octahedron. VT NMR spectroscopic studies revealed a labile coordination of the crown ether in thf solution. Reaction of the diamagnetic derivatives with triethylammonium tetraphenylborate in thf results in the clean formation of the cationic dialkyl complexes [Ln(CH2SiMe3)2(12-crown-4)(thf)y][BPh4] (Ln = Sc, Y, y = 0; Ln = Lu, y = 1), which also exhibit an exocyclic coordination of the crown ether to the cationic dialkyl lanthanide fragment. Graphic AbstractThermally robust neutral and cationic trimethylsilylmethyl complexes of the rare earth metals were stabilized as 12-crown-4 adducts.
The synthesis of a series of thermally robust, isolable trimethylsilylmethyl complexes of the rare earth metals stabilized by 12-crown-4 [Ln(CH2SiMe3)3(12-crown-4)] (Ln = Sc, Y, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) is reported. The crystallographically characterized yttrium and lutetium complexes [Ln(CH2SiMe3)3(12-crown-4)] exhibit facial coordination of the crown ether at the neutral lanthanide trialkyl unit. The coordination geometry can be derived from a capped octahedron. VT NMR spectroscopic studies revealed a labile coordination of the crown ether in thf solution. Reaction of the diamagnetic derivatives with triethylammonium tetraphenylborate in thf results in the clean formation of the cationic dialkyl complexes [Ln(CH2SiMe3)2(12-crown-4)(thf)y][BPh4] (Ln = Sc, Y, y = 0; Ln = Lu, y = 1), which also exhibit an exocyclic coordination of the crown ether to the cationic dialkyl lanthanide fragment. Graphic AbstractThermally robust neutral and cationic trimethylsilylmethyl complexes of the rare earth metals were stabilized as 12-crown-4 adducts.
AI-Helper
※ AI-Helper는 부적절한 답변을 할 수 있습니다.