Synthesis, Structure, and Dynamics of Tris(5-cyclopentadienyl)lanthanides and Bis(
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- 作者：Ulrich Baisch ; Sandro Pagano ; Martin Zeuner ; Jö ; rn Schmedt auf der Gü ; nne ; Oliver Oeckler ; and Wolfgang Schnick
- 刊名：Organometallics
- 出版年：2006
- 出版时间：June 5, 2006
- 年：2006
- 卷：25
- 期：12
- 页码：3027 - 3033
- 全文大小：256K
- 年卷期：v.25,no.12(June 5, 2006)
- ISSN：1520-6041
文摘
The crystal structures of tris(
5-cyclopentadienyl)lanthanides (Ln = Ce, Dy, Ho) have been determinedusing different X-ray diffraction methods. Cp3Ce and Cp3Ho (Cp = cyclopentadienyl) crystal data neededspecial solution and refinement methods, due to the occurrence of intrinsic twinning in these species.Our results do not agree with the previously published cell constants of Cp3Ho. The space group andunit cell parameters of Cp3Dy have been derived from powder diffraction experiments. High-resolution13C solid-state NMR data of Cp3La are presented, giving evidence of the dynamics and bonding situationof the Cp ligands. Cp3Ce turned out to be a reactive reagent for the synthesis of bis(5-cyclopentadienyl)[bis(trimethylsilyl)amido]cerium(III).
5-cyclopentadienyl)lanthanides (Ln = Ce, Dy, Ho) have been determinedusing different X-ray diffraction methods. Cp3Ce and Cp3Ho (Cp = cyclopentadienyl) crystal data neededspecial solution and refinement methods, due to the occurrence of intrinsic twinning in these species.Our results do not agree with the previously published cell constants of Cp3Ho. The space group andunit cell parameters of Cp3Dy have been derived from powder diffraction experiments. High-resolution13C solid-state NMR data of Cp3La are presented, giving evidence of the dynamics and bonding situationof the Cp ligands. Cp3Ce turned out to be a reactive reagent for the synthesis of bis(5-cyclopentadienyl)[bis(trimethylsilyl)amido]cerium(III).