Wydział Chemii

Florian P. Pruchnik

Piotr Smoleński

Katarzyna Wajda-Hermanowicz

1998

Journal of Organometallic Chemistry

570

63-69

10.1016/S0022-328X(98)00842-0

Naukowa

Angielski

Artykuł

Rhodium(I) complexes [Rh(acac)(CO)(PR₃)] with 1,3,5-triaza-7-phosphatricyclo[3.3.1.1^3,7]decane (tpa), tris(2-cyanoethyl)phosphine (cyep), tris(3-sodium sulfonatophenyl)phosphine (tppts), tris(o-methoxyphenyl)phosphine (ompp), tris(p-methoxyphenyl)phosphine (pmpp), tris(2,4,6-trimethoxyphenyl)phosphine (tmpp), PPh₂(pyl), PPh(pyl)₂ and P(pyl)₃ (pyl=2-pyridyl) have been synthesized and characterized with ¹H- and ³¹P-NMR and IR spectra. The measured ³¹P coordination chemical shifts, Δδ³¹P{¹H}, correlate well with ν(CO). Differences in ¹H chemical shifts of methyl groups of acac ligand, Δδ_Me, depend both on steric and electronic properties of phosphine ligand. Thus Δδ_Me increases with decrease of Δδ³¹P{¹H} and increases with increase of the cone angle of phosphine. Catalytic activity of complexes with tpa, cyep and tppts has been investigated. They are efficient catalysts for hydrogenation of CC and CO bonds, isomerization of alkenes and hydroformylation of alkenes. The mechanism of isomerization of allyl alcohol to propanal has been elucidated.

Rhodium(I) complexes, Acetylacetonate complexes, Water soluble phosphines, Homogeneous catalysis, Hydrogenation, Hydroformylation

https://doi.org/10.1016/S0022-328X(98)00842-0

http://www.elsevier.com