News

Discovery of how an enzyme stores the energy in our body

Javier Iglesias (IQCC) and researchers from Univ. Oxford, Univ. Southampton, Univ. Barcelona and ICREA observed the inner workings of the glycogenin enzyme after treating it with palladium A research team from four universities (Oxford, Southampton, Barcelona, Girona), among which Javier Iglesias of the Institut de Química Computacional i Catàlisi (IQCC), recently published in Nature a study

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Trapping of a Highly Reactive Oxoiron(IV) Complex

Oxoiron(IV) species are the active oxidants in catalytic oxidation reactions by nonheme iron enzymes, but have been rarely captured and/or identified as the actual oxidizing species in catalytic epoxidation or hydroxylation reactions involving synthetic nonheme iron complexes. We now report the generation of a nonheme oxoiron(IV) intermediate, [(cyclam)FeIV(O)(CH3CN)]2+ (2; cyclam = 1,4,8,11-tetraazacyclotetradecane), in the reactions

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Generation of H2 by an Environmental Friendly Mn-Catalyzed Reaction

A pure computational paper by Miquel Solà, Albert Poater and co-workers has been undertaken to favour the generation of H2, once known experimentally by Milstein and coworkers that Mn-pincer could catalyze the acceptorless dehydrogenative coupling of nitriles and alcohols to yield acrylonitriles. The reaction mechanism proposed in that work contained some intermediates that, in most

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Olga Stasyuk, new Juan de la Cierva researcher

Starting 1stJanuary 2019, Olga A. Stasyuk has become a Juan de la Cierva-formación postdoc researcher of the Institute of Computational Chemistry and Catalysis (IQCC) working in the DiMoCat group. Dr. Stasyuk obtained her PhD at the Warsaw University of Technology in 2015. During her doctoral studies under the supervision of Prof. Halina Szatylowicz, she investigated the

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Hidden conformations are key for catalytic efficiency

Today appeared in Angewandte Chemie a paper by Sílvia Osuna and co-workers where they used Markov state models to discover hidden conformations. Enzymes exist as an ensemble of conformational states, whose populations can be shifted by substrate binding, allosteric interactions, but also by introducing mutations to their sequence. Tuning the populations of the enzyme conformational

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Talking with: Eduard Matito

Eduard Matito was graduated in Chemistry at the University of Girona and he performed the PhD in the former Institut de Química Computacional (IQC) under the supervision of Prof. Miquel Solà and Prof. Miquel Duran in the field of computational chemistry and method development. Then, he worked as a postdoctoral investigator in the groups of

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IQCC Forum: The Xmas edition

This Thursday (Dec. 20, 11.00-13.30h) will take place the second edition of the IQCC Forum, a quarterly meeting-place where high-quality science will be discussed. The IQCC Forum provides the opportunity for young researchers (and more advanced researchers) to present their work to a wide audience. This will lead to better knowledge of the work that is being performed

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Interview La Caixa Junior Group Leader Alicia Casitas

Yesterday Alicia Casitas received formally the LaCaixa Junior Group Leader certificate, which she had obtained earlier this year, and which allowed her to start her independent research line at the IQCC. She started working in July, and will be working on “Sustainable Chemical Processes with Earth-Abundant Metals”. During the ceremony Alicia was interviewed (in Spanish)

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Redox-active copper ligands with tunable H-bonding

Today, Marcel Swart, Isaac Garcia-Bosch and co-workers report on catalytic aerobic oxidation of alcohols by copper complexes bearing redox-active ligands with tunable H-bonding groups. They describe the structure, spectroscopy, and reactivity of a family of copper complexes bearing bidentate redox-active ligands that contain H-bonding donor groups. Single-crystal X-ray crystallography shows that these tetracoordinate complexes are stabilized

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Trapping Iron(III)-Oxo species at the boundary of the “Oxo-Wall”

Today, Miquel Costas and co-workers reported in JACS on the trapping of Fe(III)=oxo species. Terminal non-heme iron(IV)-oxo compounds are among the most powerful and best studied oxidants of strong C-H bonds. In contrast to the increasing number of such complexes (>80 thus far), corresponding one-electron-reduced derivatives are much rarer and presumably less stable, and only two

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