Mostrando ítems 65-84 de 143
Rodríguez Serrat, Mònica (Fecha de defensa: 2019-09-27)
In the last decades, carbenes have shown a huge potential and versatility in organometallic and organic chemistry. In each of these fields, first row transition metal chemistry is less developed than noble metal complexes. ...
Gironés Torrent, Xavier (Fecha de defensa: 2002-05-10)
La present tesi, tot i que emmarcada dins de la teoria de les Mesures Semblança Molecular Quántica (MQSM), es deriva en tres àmbits clarament definits:<br/>- La creació de Contorns Moleculars de IsoDensitat Electrònica ...
Font Rubio, Pau (Fecha de defensa: 2023-10-06)
Homogeneous reactions catalyzed by gold have mainly been developed in the past two decades, stemming from the proneness of Au(I) and Au(III) complexes to coordinate and activate carbon-carbon multiple bonds towards a ...
Serra Parareda, Jordi (Fecha de defensa: 2018-06-21)
Most of the different homogeneous reactions catalyzed by gold have been developed in the past fifteen years and stem from the ability of both Au(I) and Au(III) complexes to coordinate and activate multiple carbon-carbon ...
Sabeña Vila, Gerard (Fecha de defensa: 2017-06-23)
In this work we have prepared octahedral non - heme iron species in high oxidation states. Iron (IV) - oxo and iron (IV) - imido complexes based on triazacyclononane scaffold had been synthesised and all of them had been ...
Sagristà i Puig, Ester (Fecha de defensa: 2012-11-23)
Extensive amounts of pharmaceuticals and personal care products (organic emerging pollutants) are introduced into the environment mainly through wastewater treatment plants discharges either effluent wastewater reaching ...
Vicens Serra, Laia (Fecha de defensa: 2023-07-18)
Most of the organic molecules used in chemical industry (and their synthetic precursors) contain oxygen atoms in their structure. One of the most convenient methods for the preparation of oxygenated compounds is the ...
Carreras Ferrer, Irene (Fecha de defensa: 2005-04-14)
Los fenómenos oxidativos y en particular la oxidación lipídica son uno de los principales responsables de la pérdida de calidad en la carne y en los productos cárnicos. Como consecuencia de estos procesos se generan ...
Poater i Teixidor, Jordi (Fecha de defensa: 2003-04-28)
La present tesi doctoral s'emmarca dins el camp de la química teòrica i<br/>computacional. El primer objectiu, que va ser el de partida, consistia a veure si els índexos<br/>bielectrònics derivats de la teoria AIM podien ...
Camó Marín, Cristina (Fecha de defensa: 2019-06-27)
Plant diseases produced by bacteria are responsible for considerable economic losses. These phytopathologies are highly contagious and difficult to control. With this aim, we selected peptides reported as plant defense ...
Pla i Quintana, Anna (Fecha de defensa: 2004-11-23)
La present tesi doctoral s'ha basat en la caracterització estructural i en l'estudi de les propietats catalítiques de nous complexos de pal·ladi(0) amb lligands olefínics contenint unitats de ferrocè. En una primera fase ...
Arbusé Font, Arnau (Fecha de defensa: 2020-11-12)
Macrocyclic ligands and its complexes have been studied in a wide variety of fields, among them bioinorganic chemistry. In this work it is reported three studies of macrocyclic species under three points of view. Firstly, ...
Garcia Bosch, Isaac (Fecha de defensa: 2011-12-20)
Enzymes are high-weight molecules which catalyze most of the metabolic processes in living organisms. Very often, these proteins contain one or more 1st row transition metal ions in their active center (Fe, Cu, Co, Mn, Zn, ...
Brun Massó, Sandra (Fecha de defensa: 2012-04-27)
Carbon-carbon bond formation reactions catalyzed by transition metals represent one of the most versatile and efficient strategies in organic synthesis. The catalytic transformations contribute to the development of ...
Font Molins, Marc (Fecha de defensa: 2015-02-13)
Aryl-Cu(III) species have been often implicated as the intermediate species that operate Ullmann-type couplings. However, such species have long remained elusive and the fundamental pathways that govern Ullmann-type ...
Ruiz-Barragán, Sergi (Fecha de defensa: 2014-09-19)
Conical Intersections (CI) are points in Potential Energy Surfaces (PES) of two or more states that have the same energy. They are fundamental to understand photo-chemical processes. These points are not isolated points, ...
Soler i Parpal, Jordi (Fecha de defensa: 2023-09-19)
Enzymes are a type of proteins that help chemical reactions happen faster in living organisms. Scientists have been able to modify these enzymes using a technique called protein engineering, which allowed to increase the ...
Torres Antón, Òscar (Fecha de defensa: 2017-02-24)
Some of the most powerful methods for synthesizing complex organic molecules with high levels of chemo-, diastereo- and enantioselectivity rely on metal carbene chemistry. These compounds are versatile reaction intermediates ...
Rich Masallera, Jordi (Fecha de defensa: 2012-06-08)
The catalytic asymmetric oxidation of alkenes has special interest from both industrial and academic points of view. For this reason, catalysts able to perform these reactions in a faster and more effective manner have ...
Sens Llorca, Cristina (Fecha de defensa: 2005-03-17)
Se han sintetizado dos nuevos complejos mononucleares de Ru, con formula [RuCl2(Hbpp)(dmso)2], a partir de la reacción entre [RuCl2(dmso)4] y Hbpp (3,5-bis(2-piridil)pirazola). El hecho que sólo tres de los seis posibles ...