Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Gustavo Liendo"'
Autor:
Alexander Briceño, Neudo Urdaneta, Gustavo Liendo, Jesús Núñez, Carlos F Rivas, Teresa González
Publikováno v:
Journal of Chemical Crystallography. 50:176-186
The title compound C18H17NOS was synthesized by condensation of thiochroman-4-one with 4-dimethylaminobenzaldehyde. The possible existence of the 3-(4-(Dimethylamino)benzylidene)thiochroman-4-one (E)- and (Z)-geometrical isomers was investigated usin
Autor:
Philippe Dieudonné, Isabelle Beurroies, Reinaldo Atencio, Alexander Briceño, Pedro Silva, Haci Baykara, Gustavo Liendo
Publikováno v:
Crystal Growth & Design. 19:2485-2492
Two novel compounds, {[Cu(bpy)2]3H2W12O40}·3H2O (1) and {{[Cu(OH2)(bpy)][Cu(bpy)]2W6O21}·4H2O}n (2), were isolated under hydrothermal conditions. Compound 1 is an α-metatungstate Keggin unit decorated by three “{Cu(bpy)2}2+” fragments. Compoun
Autor:
María Gabriela Cova, Hellen Bruzual, Oscar Crescente, Gustavo Liendo, Alexander Briceño, Willian Henriquez Guzmán
Publikováno v:
Saber, Vol 28, Iss 4, Pp 775-783 (2016)
From methanolic extracts of flowers of Cordia alba (Plantae: Boraginaceae), allantoin was isolated in crystalline form. It was structurally characterized by analysis of uni- and two-dimensional nuclear magnetic resonance, single crystal X-ray diffrac
Autor:
Franklin J. Méndez, Aura Llanos, Yraida Díaz, Yanet Villasana, Reynaldo Jáuregui, Joaquín L Brito, Gustavo Liendo-Polanco, Marcel Echeverría, Tamara Zoltan, Miguel A. Ramos-García
Publikováno v:
Fuel. 110:249-258
A series of tungsten and molybdenum catalysts supported on MCM-41 were prepared using Keggin heteropolyacids (H 3 PM 12 O 40 , M = Mo or W) as active phase sources and compared with their analogues unsupported. The physicochemical characterization wa
Publikováno v:
Acta Crystallographica Section E Structure Reports Online. 60:m1028-m1031
The crystal structure of the title compound, [Co(NO3)(bipy)2]2[MoO4]·7H2O (bipy is 2,2′-bipyridine, C10H8N2), contains the isomers Δ and Λ of the cation [Co(NO3)(bipy)2]+, self-assembled through complementary π–π, C—H⋯π and C—H⋯O
Publikováno v:
Science Education. 86:505-525
Most general chemistry courses and textbooks emphasize experimental details and lack a history and philosophy of science perspective. The objective of this study is to facilitate freshman general chemistry students' understanding of atomic structure