Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Regina Vallejo"'
Publikováno v:
Transition Metal Chemistry. 41:467-473
The complex Rh(acac)(CO)[P(tBu)(CH2CH=CH2)2] (1) proved to be an efficient precatalyst for the regioselective hydrogenation of quinoline (Q) to 1,2,3,4-tetrahydroquinoline (THQ) under mild reaction conditions (125 °C and 4 atm H2). A kinetic study o
Autor:
Merlin Rosales, Karely Molina, Regina Vallejo, Pablo J. Baricelli, Juan José Soto, Luis Jhonathan Bastidas
Publikováno v:
Catalysis Letters. 134:56-62
The systems prepared in situ by addition of two equivalents of 1,1,1-tris(diphenylphosphinomethyl)ethane (triphos) to M2Cl2(COE)4 (M = Rh, Ir; COE = cyclooctene) showed to be efficient and regioselective precatalysts for the hydrogenation of quinolin
Publikováno v:
Reaction Kinetics and Catalysis Letters. 92:99-104
The systems prepared in situ by addition of two equivalents of diphosphine [1,2-bis(diphenylphosphino)ethane (dppe), 1,3-bis(diphenylphosphino)propane (dppp) and 1,4-bis(diphenylphosphino)butane (dppb)] to M2Cl2(COE)4 (M = Rh, Ir; COE = cyclooctene)
Autor:
Regina Vallejo, Angel González, Merlin Rosales, Juan José Soto, Gustavo Chacón, Beatriz González
Publikováno v:
Catalysis Letters. 106:101-105
The systems prepared in situ by addition of the corresponding equivalents of the respective phosphine (mono-, di- and tri-dentated), called M2Cl2(COE)4/n phosphine (M = Rh, Ir; and COE = cyclooctene), are efficient and regioselective precatalysts for
Publikováno v:
Analytica Chimica Acta. 436:265-272
Typical coal samples from Venezuela were pyrolysed in nitrogen atmosphere at temperatures between 150 and 900°C. Structural changes were monitored by diffuse-reflectance infrared Fourier transform spectroscopy, i.e. DRIFTS. Segmented osculating poly
Publikováno v:
Fuel. 75:491-499
Diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy was evaluated as a method for the determination of volatile matter, fixed carbon, ash, heating value, carbon, hydrogen, nitrogen, total sulfur and maximum vitrinite reflectance. Fift
Autor:
Regina Vallejo, Néstor Cubillán, Heverest Soscun, Eudo Osorio, Humberto Soscún, Ysaias Alvarado
Publikováno v:
Boletín de la Sociedad Chilena de Química v.45 n.3 2000
SciELO Chile
CONICYT Chile
instacron:CONICYT
Boletín de la Sociedad Chilena de Química, Volume: 45, Issue: 3, Pages: 339-346, Published: SEP 2000
SciELO Chile
CONICYT Chile
instacron:CONICYT
Boletín de la Sociedad Chilena de Química, Volume: 45, Issue: 3, Pages: 339-346, Published: SEP 2000
El triafulveno H2C3-CH2 es el compuesto más simple que presenta conjugación cruzada no alternante. En el presente trabajo se expone un estudio teórico Ab Initio a nivel Hartree-Fock (HF) de la polarizabilidad molecular de triafulveno y análogos d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b60058d44cc5a11a38bfeb968184029
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442000000300002
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442000000300002