Hydrogen-transfer reactions of the trihydride ((MeC(CH sub 2 PPh sub 2 ) sub 3 )RhH sub 3 ): A simple route to rhodium cis hydride. eta. sup 2 -alkene complexes
- Istituto per lo Studio della Stereochimica ed Energetica dei Composti di Coordinazione del CNR, Firenze (Italy)
- Istituto di Chimica Farmaceutica, Milano (Italy)
The number, the disposition, and the nature of the substituents play an important role in determining the product composition of the reactions between the trihydride ((triphos)RhH{sub 3}) (1) and mono- or 1,2-disubstituted alkenes (triphos = MeC(CH{sub 2}PPh{sub 2}){sub 3}). In particular, alkenes bearing electron-withdrawing substituents such as CO{sub 2}R or Ph stabilize cis hydride {eta}{sup 2}-alkene complexes of the formula ((triphos)Rh-(H)({eta}{sup 2}-alkene)), whereas electron-rich alkenes do not form {eta}{sup 2} adducts but are hydrogenated to alkanes by 1. Alkynes are more easily hydrogenated by 1 than comparable alkenes. The crystal structure of ((triphos)Rh(H)({eta}{sup 2}-DMFU)){center dot}C{sub 4}H{sub 9}OH has been determined by x-ray methods (DMFU = dimethyl fumarate).
- OSTI ID:
- 6519715
- Journal Information:
- Organometallics; (USA), Journal Name: Organometallics; (USA) Vol. 9:8; ISSN 0276-7333; ISSN ORGND
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ALKENES
CRYSTAL STRUCTURE
DATA
DATA ANALYSIS
EXPERIMENTAL DATA
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROGEN TRANSFER
INFORMATION
MEASURING INSTRUMENTS
MEASURING METHODS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
REFRACTORY METAL COMPOUNDS
RHODIUM COMPOUNDS
RHODIUM HYDRIDES
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS