Abstract
NMR exchange measurements on [Rh(1,5-COD)(bidentate)]BF4 complexes (bidentate = chiral bis-phosphine, a P,N-phosphino-oxazoline, a P,S-phosphito-thioether and a bis-pyrazolylborate) show selective 1,5-COD dynamics which can be superficially attributed to olefin rotation. It is suggested that the mechanism actually involves: (i) M-L1 bond breaking (L1 = N or S-donor); (ii) isomerization of the T-shaped species; (iii) rotation around the remaining M-L2 bond and (iv) recomplexation. The solid state structures of the two compounds [M(1,5-COD)(10)]BF4, M = Rh, Ir and 10=(S,R)-2-[4-(isopropyl)oxazol-2-yl]-2′-diphenylphosphino-1,1′- binaphthyl, were determined by X-ray diffraction methods.
| Original language | English |
|---|---|
| Pages (from-to) | 244-251 |
| Number of pages | 8 |
| Journal | Journal of Organometallic Chemistry |
| Volume | 587 |
| Issue number | 2 |
| Publication status | Published - Sep 25 1999 |
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Keywords
- 2 D-exchange NMR
- [Rh(1,5-COD)(bidentate)]
- X-ray diffraction
ASJC Scopus subject areas
- Biochemistry
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry
- Materials Chemistry
Cite this
Valentini, M., Selvakumar, K., Wörle, M., & Pregosin, P. S. (1999). Selective dynamics of [Rh(1,5-COD)(bidentate)]BF4 complexes via NMR exchange spectroscopy. Journal of Organometallic Chemistry, 587(2), 244-251.