Bis(permethylindenyl) Complexes of Thorium: Synthesis, Structure, and Reactivity
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- 作者：Tina M. Trnka ; Jeffrey B. Bonanno ; Brian M. Bridgewater ; and Gerard Parkin
- 刊名：Organometallics
- 出版年：2001
- 出版时间：July 23, 2001
- 年：2001
- 卷：20
- 期：15
- 页码：3255 - 3264
- 全文大小：200K
- 年卷期：v.20,no.15(July 23, 2001)
- ISSN：1520-6041
文摘
A variety of thorium complexes incorporating the bulky permethylindenyl ligand (Ind* =C9Me7) have been synthesized and characterized. Specifically, the dichloride Ind*2ThCl2 isobtained by reaction of ThCl4 with Ind*Li, from which Ind*2ThMe2, Ind*2Th(NMe2)2, Ind*2Th(NC4H4)2, and Ind*2Th(
3-H3BH)2 may be obtained by metathesis with MeLi, LiNMe2,LiNC4H4, and Ca(BH4)2, respectively. In contrast to simple metathesis, reaction of Ind*2ThCl2 with KN(SiMe3)2 yields the metallacycle Ind*2Th(2-CH2SiMe2NSiMe3). X-ray diffraction studies on Ind*2ThCl2, Ind*2ThCl(
-Cl)2Li(tmeda), Ind*2ThMe2, Ind*2Th(NMe2)2, Ind*2Th(2-CH2SiMe2NSiMe3), and Ind*2Th(3-H3BH)2 indicate that the permethylindenyl ligandsin these complexes exhibit a variety of conformations.
3-H3BH)2 may be obtained by metathesis with MeLi, LiNMe2,LiNC4H4, and Ca(BH4)2, respectively. In contrast to simple metathesis, reaction of Ind*2ThCl2 with KN(SiMe3)2 yields the metallacycle Ind*2Th(2-CH2SiMe2NSiMe3). X-ray diffraction studies on Ind*2ThCl2, Ind*2ThCl(-Cl)2Li(tmeda), Ind*2ThMe2, Ind*2Th(NMe2)2, Ind*2Th(2-CH2SiMe2NSiMe3), and Ind*2Th(3-H3BH)2 indicate that the permethylindenyl ligandsin these complexes exhibit a variety of conformations.