{"id":41427,"date":"1999-01-01T00:00:00","date_gmt":"1999-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/estereoisomeria-magnetishe-i-transferencia-electronica-en-molecules-organiques-de-tipus-bis-i-tris-triarilic\/"},"modified":"1999-01-01T00:00:00","modified_gmt":"1999-01-01T00:00:00","slug":"estereoisomeria-magnetishe-i-transferencia-electronica-en-molecules-organiques-de-tipus-bis-i-tris-triarilic","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/estereoisomeria-magnetishe-i-transferencia-electronica-en-molecules-organiques-de-tipus-bis-i-tris-triarilic\/","title":{"rendered":"Estereoisomeria, magnetishe i transferencia electronica en molecules organiques de tipus bis- i tris-triarilic."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Josep Sedo Vegara <\/strong><\/h2>\n<p>Se han estudiado las propiedades magn\u00e9ticas de un triradical org\u00e1nico de la fam\u00edlia de los sistemas triarilmet\u00edlicos perclorados extendidos. Este radical presenta tres centros de capa abierta, los cuales esan acoplados ferromagn\u00e9ticamente de acuerdo con la topolog\u00eda de la uni\u00f3n covalente y el mecanismo de polarizaci\u00f3n de sp\u00edn. El estudio comprende una completa caracterizaci\u00f3n electroqu\u00edmica y magn\u00e9tica (squid, epr), as\u00ed como una adecuada jusificaci\u00f3n de las propiedades electr\u00f3nicas y magn\u00e9ticas del compuesto mediante c\u00e1lculos semiemp\u00edricos am1-ci.  el segundo cap\u00edtulo de la memoria comprende el estudio electroqu\u00edmico, magn\u00e9tico y espectrosc\u00f3pico de cuatro aniones-radicales de Valencia mixta de la familia de los radicales, antes mencionada. Las propiedades de transferencia elect\u00f3nica intramolecular en estas especies son, posteriormente, justificadas en base a los modelos de hush y pks (piepho-krausz-schatz). Las mol\u00e9culas estudiadas se cuentan entre los pocos ejemplos conocidos de sistemas de Valencia mixta puramente org\u00e1nicos, y los primeros en los que se prueba la existencia de acoplamiento ferromagn\u00e9tico entre los centros radicalarios, coexistentes con la carga negativa itinerante.  el tercer y \u00faltimo cap\u00edtulo versa sobre la estereoqu\u00edmica est\u00e1tica y din\u00e1mica de los sistemas triar\u00edlicos extendidos. La complejidad del tema ha obligado al desarrollo de una metodolog\u00eda ad hoc par su estudio, que se ha dado en llamar \u00abm\u00e9todo de las rotaciones sistem\u00e1ticas\u00bb. En conjunto, la parte te\u00f3rica del estudio ha permitido averiguar el nuero simetr\u00eda, y caminos de interconversi\u00f3n conformacional factibles para once mol\u00e9culas diferentes. la parte experimental, llevada a cabo mediante hplc y rmn (hmbc y exsy) ha permitido corroborar m\u00e1s all\u00e1 de toda duda las predicciones realizadas al respecto.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Estereoisomeria, magnetishe i transferencia electronica en molecules organiques de tipus bis- i tris-triarilic.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Estereoisomeria, magnetishe i transferencia electronica en molecules organiques de tipus bis- i tris-triarilic. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Josep Sedo Vegara <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1999<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Jaume Veciana Mir\u00f3<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: jose Elguero bertolini <\/li>\n<li>miquel Pons valles (vocal)<\/li>\n<li>eugenio Coronado miralles (vocal)<\/li>\n<li>jordi Marquet cortes (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Josep Sedo Vegara Se han estudiado las propiedades magn\u00e9ticas de un triradical org\u00e1nico de la fam\u00edlia de [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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