Reactions of vinyl amido ligands in Tp`(CO){sub 2}W[N(R`)CH=CHR] complexes prepared from addition of primary amines to coordinated alkynes
- Univ. of North Carolina, Chapel Hill, NC (United States)
Reaction of the ytterbium-benzophenone dianion complex (1), which was formed by reaction of Yb metal with benzophenone in THF/HMPA, with 2,6-di-tert-butyl-4-methylphenol, yielded the ytterbium(II) aryloxide complex Yb(OAr){sub 2}(HMPA){sub 2} (2, Ar= C{sub 6}H{sub 2} -{sup t}Bu{sub 2}-2,6-Me-4) as a major product (80%) and the ytterbium(III) enolate complex (3) as a minor one (ca. 5% yield). The mechanisms of these reactions are discussed. X-ray crystallographic studies reveal that 3, 4a, and 7b are isostructural, and so are 5a and 6. The central metal ions in these complexes are all five-coordinated in a trigonal bipyramid form (highly distorted in the case of 5a and 6) with two HMPA ligands at the apical and three anionic oxygen ligands at the equatorial positions. 20 refs., 2 figs., 7 tabs.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 171520
- Journal Information:
- Organometallics, Journal Name: Organometallics Journal Issue: 11 Vol. 14; ISSN ORGND7; ISSN 0276-7333
- Country of Publication:
- United States
- Language:
- English
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