{"id":19328,"date":"2002-04-10T00:00:00","date_gmt":"2002-04-10T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/compuestos-polinucleares-de-manganeso-con-ligandos-puente-carboxilato-estudio-del-comportamiento-magnetico-y-de-la-actividad-catalasa\/"},"modified":"2002-04-10T00:00:00","modified_gmt":"2002-04-10T00:00:00","slug":"compuestos-polinucleares-de-manganeso-con-ligandos-puente-carboxilato-estudio-del-comportamiento-magnetico-y-de-la-actividad-catalasa","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/compuestos-polinucleares-de-manganeso-con-ligandos-puente-carboxilato-estudio-del-comportamiento-magnetico-y-de-la-actividad-catalasa\/","title":{"rendered":"Compuestos polinucleares de manganeso con ligandos puente carboxilato. estudio del comportamiento magn\u00e9tico y de la actividad catalasa"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Gema Fern\u00e1ndez Mart\u00ednez <\/strong><\/h2>\n<p>Se han sintetizado y caracterizado (an\u00e1lisis elemental, espectroscopia ir, espectrometr\u00eda de masas, conductividad i\u00f3nica, difracci\u00f3n de rayos x sobre monocristal y medidas de susceptibilidad magn\u00e9tica molar de 300 a 4k) distintos compuestos de manganeso con ligandos puente carboxilato.  en primer lugar se han preparado compuestos dinucleares de mn(iii) de f\u00f3rmula general ((mn(nn)(l)2(u-rcoo)(u-o)(x)2, con nn = bpy, phen, rcoo = cich2coo, n-ch3phcoo, n-fphcoo, x = no3, clo4, l = h2o, no3 o clo4.  todos estos compuestos catalizan la reacci\u00f3n de desproporci\u00f3n del per\u00f3xido de hidr\u00f3geno e acetonitrilo.  la actividad depende de los ligandos carboxilato puente (n-ch\u00c2\u00b7phcoo &gt; n-fphcoo &gt; clch2coo), siendo m\u00e1s activos los compuestos con carboxilatos m\u00e1s electrodadores.  mediante el estudio cin\u00e9tico de la reacci\u00f3n se ha determinado que inicialmente el orden de reacci\u00f3n respecto al compuesto de mn(iii) es uno, mientras que respecto al h2o2 es dos.  por otro lado se han obtenido diversos tipos de compuestos de mn(ii) con los ligandos empleados en el trabajo: dinucleares ((mn(nn)2)2(u-rcoo)2)(clo4)2, trinucleares (mn3(bpy)2(u-rcoo)6) y un compuesto monodimensional (mn(phen)(u-clch2coo)2)n. se han estudiado los espectros rpe de todos estos compuestos y se han realizado simulaciones para los espectros a 4 k de los compuestos dinucleares y trinucleares.  se han obtenido tambi\u00e9n dos compuestos tridecanucleares de Valencia mixta de f\u00f3rmula general (mn13 (u-ch3ch2o)6(u-rcoo)12(u-o)8), (rcoo = 4-ch3phcoo, 3-fphcoo). Se ha realizado el estudio magn\u00e9tico (medidas de susceptibilidad magn\u00e9tica molar en el intervalo de temperaturas 0,1 &#8211; 150 k y medidas de magnetizaci\u00f3n a baja temperatura) del compuesto con 4-ch3phcoo, y se han registrado los espectros de resonancia paramagn\u00e9tica electr\u00f3nica a distintas temperaturas.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Compuestos polinucleares de manganeso con ligandos puente carboxilato. estudio del comportamiento magn\u00e9tico y de la actividad catalasa<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Compuestos polinucleares de manganeso con ligandos puente carboxilato. estudio del comportamiento magn\u00e9tico y de la actividad catalasa <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Gema Fern\u00e1ndez Mart\u00ednez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 04\/10\/2002<\/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>Montserrat Corbella Cordom\u00ed<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: joan Ribas gispert <\/li>\n<li>Manuel Rafael Bermejo pati\u00f1o (vocal)<\/li>\n<li>jacques Girerd jean (vocal)<\/li>\n<li>bel\u00e9n Albela castillo (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Gema Fern\u00e1ndez Mart\u00ednez Se han sintetizado y caracterizado (an\u00e1lisis elemental, espectroscopia ir, espectrometr\u00eda de masas, conductividad i\u00f3nica, [&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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