Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Bernardo Fontal"'
Publikováno v:
Revista U.D.C.A Actualidad & Divulgación Científica, Vol 19, Iss 2, Pp 467-477 (2016)
Las concepciones son la base fundamental en el proceso educativo, con el fin de planificar acciones didácticas, necesarias para lograr cambios graduales, hacia una visión integrada de la naturaleza científica. Por ello, este trabajo estudió el ca
Externí odkaz:
https://doaj.org/article/ce7801dd842342d6bbe3394465e628d1
Autor:
Yuraima Fonseca, Bernardo Fontal, Marisela Reyes, Trino Suarez, Fernando Bellandi, Juan Carlos Diaz, Pedro Cancines
Publikováno v:
Avances en Química, Vol 7, Iss 1, Pp 27-33 (2012)
In this work we describe the synthesis and characterization of a new water soluble ruthenium complex [Ru(Cl)2(DMSO)2(PySO3Na)2] (complex 1); where [PySO3Na] is the sodium salt of p-sulphonated pyridine. Complex 1 was obtained by slow addition of liga
Externí odkaz:
https://doaj.org/article/b802679b51df408f96b39714d5594f24
Autor:
Marisela Reyes, Lenis Prado, Bernardo Fontal, Trino Suárez, Fernando Bellandi, Yuraima Fonseca, Pedro Cancines
Publikováno v:
Avances en Química, Vol 4, Iss 2, Pp 79-82 (2009)
Catalytic naphtha hydroformylation with Rh and Mo complexes in biphasic medium. Parameter optimization. The Chlorocarbonyl bis-(diphenyl[meta-sulphonate of sodium phenyl]phosphine)Rhodium(I) [RhCl(CO)[P(C6H6)2(m-(C6H5)SO3Na)]2], Chlorocarbonyl bis-(p
Externí odkaz:
https://doaj.org/article/c919be05db4b4ed2b3368ae47d14facc
Autor:
Marisela Reyes, Enrique J. Parra, Yuraima Fonseca, Bernardo Fontal, Trino Suárez, Fernando Bellandi, Ricardo R. Contreras, Isolda Romero, Lenis Prado, Pedro Cancines
Publikováno v:
Avances en Química, Vol 3, Iss 1, Pp 15-20 (2008)
The RuCl2(DMSO)4 complex was used as catalytic precursor in olefin hydroformylation reactions, giving good percent yield and better selectivity for linear aldehydes. The reactions were tested in homogeneous medium and biphasic organic solvent/ water
Externí odkaz:
https://doaj.org/article/3b6f4b955c554c999346347f91216ff0
Publikováno v:
Revista Técnica de la Facultad de Ingeniería, Vol 22, Iss 2 (2010)
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Externí odkaz:
https://doaj.org/article/e8b2dd23c7e14930a37da24833be491b
Publikováno v:
NOVASINERGIA, Vol 3, Iss 1, Pp 96-100 (2020)
En 1961, Lauri Vaska y John W. DiLuzio publicaban un importante trabajo en el área de los complejos organoiridio, la síntesis y caracterización del trans-clorocarbonilbis (trifenilfosfina-κP)iridio(I), trans-[IrCl(CO)(PPh3)2], un compuesto que pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d43f7b12eac1a08559920b7c371e520c
http://novasinergia.unach.edu.ec/index.php/novasinergia/article/view/151/165
http://novasinergia.unach.edu.ec/index.php/novasinergia/article/view/151/165
Autor:
Trino Suárez, Juan C. Diaz, Marisela Reyes, Bernardo Fontal, Yuraima Fonseca, Pedro Cancines, Fernando Bellandi
Publikováno v:
Reaction Kinetics, Mechanisms and Catalysis. 105:307-315
In this work, we describe the synthesis and characterization of a new water soluble [RhCl(CO)(PySO3Na)2], complex (1); where [PySO3Na] is the sodium salt of p-sulfonated pyridine ligand. Complex (1) was obtained in methanol, reacting the dried sodium
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f53a98b9e5e8403554c1d78addd43ea
https://doi.org/10.1007/s11144-011-0402-4
https://doi.org/10.1007/s11144-011-0402-4
Autor:
Trino Suárez, Juan C. Diaz, Marisela Reyes, Yuraima Fonseca, Joel E. Vielma, Bernardo Fontal, Pedro Cancines, Fernando Bellandi
Publikováno v:
Transition Metal Chemistry. 36:617-620
RuCl2(DMSO)2(NC5H4CO2Na-3)2 is very soluble in the ionic liquid (IL) 1-n-butyl-3-methylimidazolium tetrafluoroborate, [(BMIM)BF4]. The complex was prepared by reacting RuCl2(DMSO)4 with NC5H4CO2Na-3, sodium nicotinate, in toluene, and was characteriz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::04144e9abbfbb8ceef3d11a9e8c49383
https://doi.org/10.1007/s11243-011-9510-2
https://doi.org/10.1007/s11243-011-9510-2
Autor:
Roberto Sánchez Delgado, César Rincón Orta, Ricardo Lobo, Rollin Kent Silva, Bárbara Gordillo, Oscar M. González Cuevas, Bernardo Fontal, Armando Rugarcía Torres, Hugo Torrens
Publikováno v:
Educación Química. 3:5
Soportando nuestro quehacer universitario se enraizan un sinnúmero de mitos y creencias. Una de estas creencias dice más o menos lo siguiente: para ser un profesor es necesario ser investigador y para serlo, se requiere de un doctorado. De otra man
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5d1f8374f802508498f30dc03d5cfca
https://doi.org/10.22201/fq.18708404e.1992.1.66906
https://doi.org/10.22201/fq.18708404e.1992.1.66906
Autor:
Isolda Romero, Ghery Zambrano, Yuraima Fonseca, Bernardo Fontal, Pedro Cancines, Trino Suárez, Juan C. Diaz, Fernando Bellandi, Marisela Reyes, Ricardo R. Contreras
Publikováno v:
Reaction Kinetics and Catalysis Letters. 94:21-26
Reaction between Mo(CO)6 and p-C5NH4SO3Na (1:2 (Mo: p-C5NH4SO3Na) stoichiometric ratio) gave the trans-Mo(CO)4(p-C5NH4SO3Na)2 complex, (1), in 80% yield. Complex (1) has been characterized by FTIR, 1H and 13C NMR spectroscopy. Complex (1) has most li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97dd08fc94f91a97c9b49925df2978ef
https://doi.org/10.1007/s11144-008-5308-4
https://doi.org/10.1007/s11144-008-5308-4