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Rhodium complexes HRh[P(NC4H4)3]4 and HRh(CO)[P(NC4H4)3]3 as active catalysts of olefins and arenes hydrogenation X-ray structure of HRh(CO)[P(NC4H4)3]3.
Autorzy
Rok wydania
1998
Czasopismo
Journal of Organometallic Chemistry
Numer woluminu
552
Strony
159-164
DOI
10.1016/S0022-328X(97)00508-1
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The rhodium hydrido complexes HRh[PPhx(NC4H4)3−x]4 (x=0–2) and HRh(CO)[PPhx(NC4H4)3−x]3 have been obtained in reactions of Rh(acac)(CO)2+PPhx(NC4H4)3−x with H2 or H2/CO (0.1 MPa, room temperature) respectively. The crystal structure of HRh(CO)[P(NC4H4)3]3 has been determined. The complex is slightly distorted trigonal bipyramidal with H and CO ligands occupying the axial positions. The Rh atom is located 0.336 Å out of plane of the three equatorial P atoms. The Rh–H distance in two crystallographically independent molecules is 1.51(5) and 1.69(6) Å respectively. The complexes HRh[P(NC4H4)3]4 and HRh(CO)[P(NC4H4)3]3 are active catalysts of hydrogenation reaction of olefins and arenes (cyclohexene, 1,3-cyclohexadiene, 1,4-cyclohexadiene, propenylbenzene, styrene, toluene) at 353 K and 0.5 MPa H2. The TOF up to 836 mol/mol Rh per h have been obtained.
Słowa kluczowe
HRh[P(NC4H4)3]4, HRh(CO)[P(NC4H4)3]3, Olefins and arenes hydrogenation
Adres publiczny
https://doi.org/10.1016/S0022-328X(97)00508-1
Strona internetowa wydawcy
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