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Titolo:
Rhodium(I) complexes with OPPy2Ph and OPPy3 (Py=2-pyridyl), and their behavior in hydrogenation reactions
Autore:
Casares, JA; Espinet, P; Martin-Alvarez, JM; Espino, G; Perez-Manrique, M; Vattier, F;
Indirizzi:
Univ Valladolid, Fac Ciencias, Dept Quim Inorgan, E-47005 Valladolid, Spain Univ Valladolid Valladolid Spain E-47005 rgan, E-47005 Valladolid, Spain Univ Burgos, Fac Ciencias, Dept Quim, Burgos 09002, Spain Univ Burgos Burgos Spain 09002 Ciencias, Dept Quim, Burgos 09002, Spain
Titolo Testata:
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
fascicolo: 1, , anno: 2001,
pagine: 289 - 296
SICI:
1434-1948(200101):1<289:RCWOAO>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
HYBRID LIGAND 1-(DIPHENYLPHOSPHINO)-2-(2-PYRIDYL)ETHANE; BIS(OLEFIN)RHODIUM POLY(1-PYRAZOLYL)BORATO COMPLEXES; TERDENTATE NITROGEN LIGANDS; X-RAY STRUCTURES; CRYSTAL-STRUCTURE; DYNAMIC BEHAVIOR; CLEAVAGE DERIVATIVES; MOLECULAR-STRUCTURES; CARBONYL-COMPLEXES; CHEMISTRY;
Keywords:
alkenes; hydrogenations; N ligands; phosphanes; rhodium;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
62
Recensione:
Indirizzi per estratti:
Indirizzo: Espinet, P Univ Valladolid, Fac Ciencias, Dept Quim Inorgan, Prado Magdalena S-N, E-47005 Valladolid, Spain Univ Valladolid Prado Magdalena S-N Valladolid Spain E-47005 n
Citazione:
J.A. Casares et al., "Rhodium(I) complexes with OPPy2Ph and OPPy3 (Py=2-pyridyl), and their behavior in hydrogenation reactions", EUR J INORG, (1), 2001, pp. 289-296

Abstract

The reaction of [Rh-2(mu -Cl)(2)(COD)(2)] (COD = 1,5-cyclooctadiene) or [Rh-2(mu -Cl)(2)(TFB)(2)] (TFB= tetrafluorobenzobicyclo[2.2.2]octatriene) with the N-donor chelating ligand OPPy2Ph (Py = 2-pyridyl) in the presence of TlBF4 affords cationic complexes [Rh(diene)(OPPy2Ph)](BF4) (1, diene: COD; 2, diene: TFB). Compounds 1 or 2 react with CO to give [Rh(CO)(2)(OPPy2Ph)](BF4) (4), which is also obtained by treatment of [Rh-2(mu -Cl)(2)(CO)(4)] with OPPy2Ph and TIBF4. In a similar way, the complexes [Rh(diene)(OPPy3)] (BF4) (5, diene: COD; 6, diene: TFB) are obtained when using OPPy3; they react with CO to give [Rh-2(mu -CO)(3)(OPPy3)(2)] (BF4)(2) (9) The behavior of the complexes in solution is reported. The complexes with OPPy3, 5 and 6,show equivalence of the three Py groups in their NMR spectra. Complex 5 issquare-planar in the solid state, and in solution, and the uncoordinated and coordinated Py groups undergo fast exchange in solution. Complex 6 is pentacoordinated in the solid state and in solution, and its Py groups exchange their coordination sites in a fast topomerization process. The single-crystal X-ray structures of 5 and 6 have been solved. The behavior of 1 and 5as catalysts in hydrogenation reactions of cyclohexene, acetone, and cyclohexanone is also reported.

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Documento generato il 05/04/20 alle ore 03:39:50