A monomeric solvent-free bent lanthanide dialkyl and a lanthanide analogue of a Grignard reagent. Crystal structures of Yb[l brace]C(SiMe[sub 3])[sub 3][r brace][sub 2] and [Yb[l brace]C(SiMe[sub 3])[sub 3][r brace]I[center dot]OEt[sub 2]][sub 2]
- Univ. of Sussex, Brighton (United Kingdom)
There is much current interest in the organometallic chemistry of the f-block elements. Considerable progress has been made in developing the chemistry of the +3[sub la] and 0[sub lb] oxidation states: work on the +2 oxidation state has been mainly concerned with polyhapto ligands, especially substituted cyclopentadienyls. We report the synthesis and crystal structure of bis[l brace]tris-(trimethylsilyl)methyl[r brace] ytterbium, Yb[l brace]C(SiMe[sub 3])[sub 3][r brace][sub 2], obtained in good yield as a highly air- and moisture-sensitive orange solid from the reaction between YbI[sub 2] and K[l brace]C(SiMe[sub 3])[sub 3][r brace][sup 5] in benzene, and the determination of its crystal structure. As far as we are aware this is the first solvent-free dialkyl lanthanide to be characterized. We also describe the preparation and structure of an Yb analogue of a Grignard reagent; these have been used in synthesis but have not previously been isolated. The most interesting and surprising feature of the solid-state structure is that the C-Yb-C angle is 137[degree]. 19 refs., 2 figs.
- OSTI ID:
- 6604651
- Journal Information:
- Journal of the American Chemical Society; (United States), Vol. 116:26; ISSN 0002-7863
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ORGANOMETALLIC COMPOUNDS
NUCLEAR MAGNETIC RESONANCE
SYNTHESIS
X-RAY DIFFRACTION
YTTERBIUM COMPOUNDS
BENZENE
CHEMICAL BONDS
GRIGNARD REAGENTS
LIGANDS
RARE EARTH COMPOUNDS
SILICON COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
AROMATICS
COHERENT SCATTERING
DIFFRACTION
HYDROCARBONS
MAGNESIUM COMPOUNDS
MAGNETIC RESONANCE
ORGANIC COMPOUNDS
RESONANCE
SCATTERING
400702* - Radiochemistry & Nuclear Chemistry- Properties of Radioactive Materials
400201 - Chemical & Physicochemical Properties
400102 - Chemical & Spectral Procedures