113 research outputs found

    Preparation and x-ray structure of 4-N,N'-bis(trimethylsilyl)- amino-3,5-diisopropylphenylselenium trichloride

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    Open access article. Creative Commons Attribution 4.0 International License (CC BY 4.0) applies.The reaction of SeCU or SeCF with /V,/V’-bis(trimethylsilyl)-2,6-diisopropylaniline occurs not at the nitrogen atom but by electrophilic aromatic substitution at C-4 of the phenyl ring to give [(CH3)3Si]2NC6H2('Pr:)SeCl3, which crystallizes as the chloro-bridged dimer in the triclinic system, space group Pi, a - 10.2598(17), b = 13.665(3), c = 9.7838(10) A, a = 90.056(13), ß = 102.439(11), 7 = 70.922(14)°, V = 1262.3(4) A \Z = 1. The dimer contains an essentially planar CUSe^-Cl^SeCU unit, with trans apical (Me3SihNC6H2('Pr)2 groups, resulting in approximately square pyramidal geometry at Se. The bridging Se-Cl distances are unequal at 2.587(2) and 2.749(2) A.Ye

    La situación laboral de la mujer salvadoreña en calidad de inmigrante irregular en El Estado de California de los Estados Unidos de América. Periodo 2010-2017.

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    Causa del posicionamiento laboral y salarial de la inmigrante irregular salvadoreña en el Estado de California de los Estados Unidos de América –Impacto del posicionamiento laboral y salarial de la inmigrante irregular salvadoreña en el Estado de California de los Estados Unidos de América – Importancia de la participación activa del Estado de El Salvador en la mejora laboral y salarial de las inmigrantes irregulares salvadoreñas, radicadas en el Estado de California de los EUA

    DIFTONE TM:Diffractive Optics into the Product Packages and Printed Products

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    DIFTONE TM:Diffractive Optics into the Product Packages and Printed Products

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