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Synthesis and Characterization of the First Bisand Tris[1-(ω-alken-1-yl)indenyl]lanthanide Complexes

✍ Scribed by Herbert Schumann; Dirk F. Karasiak; Stefan H. Mühle

Book ID
101300472
Publisher
John Wiley and Sons
Year
2000
Tongue
German
Weight
269 KB
Volume
626
Category
Article
ISSN
0372-7874

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✦ Synopsis

The reactions of the trichlorides of gadolinium, erbium, yttrium, lutetium, and ytterbium with 1 a or 2 a (mole ratio 1 : 2) in THF produce the bis(indenyl)lanthanide chloride complexes L 2 LnCl(THF)

, whereas the trichlorides of the comparatively large samarium and lanthanum ions react with different molar amounts of 2 a in THF exclusively with formation of the tris(indenyl) complexes L H 3 Sm (2 g) or L H

3 La(l-Cl)Li(Et 2 O) 3 (2 h), respectively. All new compounds were characterized by elemental analyses, mass spectrometry, and the diamagnetic compounds 2 d, 2 e and 2 h also by 1 H and 13 C{ 1 H}-NMR spectroscopy. The single crystal X-ray structural analyses of 1 c, 2 f, 2 g and 2 h demonstrate that the alkenyl groups of the indenyl side chains are not coordinated to the lanthanide atoms.

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Synthesis and Characterization of 1-and 2-(ω-Alken-1-yl)indenes, Their Lithium Salts and Dichlorozirconium(IV) Complexes. -Reaction of indenyllithium derivatives (I), (VII) and the lithium salt of (X) with alkenyl halides (II) affords 3-alkenylindenes (III), (VIII), and (XI). 2-Alkenylindene deriva