Search results for "Organo"
showing 10 items of 1460 documents
Crystal structure of bis(2-methyl-1H-imidazol-3-ium) dihydroxidobis(oxalato-κ2 O 1,O 2)stannate(IV) monohydrate
2016
The SnIV atom in the anion of the title compound is six-coordinated by two OH groups and four O atoms from two chelating oxalate ligands. Several N—H⋯O and O—H⋯O hydrogen bonds involving the stannate dianions, the cations and the water molecules result into a three-dimensional network structure.
Crystal structure of bis(cyclohexylammonium) diphenyldioxalatostannate(IV)
2015
In the title salt, (CyNH3)2[Sn(Ph2)(C2O4)2] (Cy is cyclohexyl and Ph is phenyl), the SnPh2 moiety is chelated by two oxalate anions, leading to a cis arrangement within the distorted octahedral coordination sphere of the SnIV atom.
Synthesis, spectroscopic study, and crystal structure of a new organotin(IV) selenate derivative
2018
Abstract The polymeric organotin(IV) selenate complex [(Me3Sn)3(SeO4)(OH)]n (1) has been isolated as single crystals from the reaction of [(Me2NH2)2SeO4] and Me3SnCl in methanol. In the solid state, compound 1 was characterized by X-ray diffraction analysis, Fourier transform-infrared spectroscopy, and elemental analysis. 1 crystallizes in the orthorhombic system space group Pbca with a=11.0231(2) Å, b=16.3461(3) Å, c=20.9945(4) Å, α=β=γ=90°, V=3782.89(12) Å3, and Z=8. Its structure can be described as a polymeric zigzag chain based on Me3Sn moieties linked by tridentate selenate anions. Pendant (Me3Sn)2OH groups are also connected to the chain, according to a syndiotactic organization, and…
Preparation of potentially porous, chiral organometallic materials through spontaneous resolution of pincer palladium conformers.
2013
Understanding the mechanism by which advanced materials assemble is essential for the design of new materials with desired properties. Here, we report a method to form chiral, potentially porous materials through spontaneous resolution of conformers of a PCP pincer palladium complex ({2,6-bis[(di-t-butylphosphino)methyl]phenyl}palladium(II)halide). The crystallisation is controlled by weak hydrogen bonding giving rise to chiral qtz-nets and channel structures, as shown by 16 such crystal structures for X = Cl and Br with various solvents like pentane and bromobutane. The fourth ligand (in addition to the pincer ligand) on palladium plays a crucial role; the chloride and the bromide primaril…
Establecimiento de organoides derivados de pacientes con carcinoma colorrectal como modelo para cribado de drogas con acción antitumoral
2022
El cáncer colorrectal (CCR) es la segunda causa de muerte por cáncer a nivel mundial, y es el tercero en incidencia. En los últimos años se han realizado grandes avances para entender mejor los aspectos clínico-patológicos y moleculares del CCR lo que ha conducido a una mejora de las terapias y aumentado la supervivencia de los pacientes. Sin embargo, pese a estos avances muchos pacientes no se benefician de los tratamientos, lo que evidencia la necesidad de búsqueda de nuevos biomarcadores de respuesta y modelos preclínicos adecuados que permitan avanzar hacia una medicina más personalizada. En este contexto, la tecnología de los organoides ha revolucionado el estudio in vitro del cáncer, …
Organotin(IV) Adducts of 5,7-Diphenyl-1,2,4-triazolo[1,5-a] pyrimidine and 5,7-Ditertbutyl-1,2,4-triazolo[1,5-a] pyrimidine
2007
Immobilizzazione di dipeptidi su resina polistirenica ed impiego in sintesi stereoselettive: risultati preliminari
2008
La minéralité des vins: exploitation de sémantique cognitive d'une étude consommateurs
2014
International audience; La notion de minéralité a récemment émergé dans le discours des professionnels avant de diffuser vers celui des consommateurs. Pour autant, nul n'est encore parvenu à fixer les frontières de la minéralité. Les vins blancs de Bourgogne (issus de cépage Chardonnay) et les vins de Chasselas (ou Fendant) expriment leur terroir par une minéralité souvent affirmée. Trop utilisé et parfois employé à mauvais escient, le terme minéralité risque aujourd'hui d'être galvaudé et de perdre sa véritable signification.L'objectif général du projet est donc d'avoir une meilleure connaissance globale de la minéralité des vins blancs de la zone franco-suisse pour ensuite informer et acc…
The inheritance of organogenic response in melon
1996
Previous studies have demonstrated variation in organogenic competence among plants within a population ofCucumis melo. In order to determine if leaf explant response is under genetic control, we investigated the distribution of the shoot regeneration frequency in F1 and F2 generations from parents representing extreme values forin vitro organogenic response. Results suggest a genetic model with two genes, partial dominance, independent segregation and similar effects for both genes.
Characterization and classification of different genotypes in a population of Cucumis melo based on their ability to regenerate shoots from leaf expl…
1995
Variability of the in vitro organogenic response from leaf explants of a seed population of Cueumis melo L. ev. Cantaloupe Charentais was analyzed to detect genotypic variability among individual seeds for shoot regeneration. Variation in shoot regeneration frequency among plants from different seeds was compared to that found among clonal replicas of each original plant. Clonal propagation was performed using in vitro culture of apical and axillary buds of axenic plants to avoid somaclonal variation. Results demonstrate the existence of highly significant differences among plants from the seed population. Regeneration frequency of leaf explants derived from clonally propagated sets of a si…