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Design and synthesis of rhodium and iridium bis-η2 diolefin catalysts: : Applications in C–C bond formation and asymmetric catalysis

Catalysis is one of the few scientific concepts that has entered common parlance. To laymen catalysts simply speed up processes, but to a chemist they are much more interesting and complex. Catalysis offers the possibility to accomplish chemical reactions in a targeted manner with the least expenditure of energy and material. Given the increasing scarcity of resources, catalysts have become relevaThis thesis deals with the design and synthesis of rhodium and iridium bis-η2 diolefin catalysts and their applications in C–C bond formation and asymmetric catalysis.More specifically, the second chapter describes the development of inter- and intramolecular (5+2) cycloadditions catalyzed by cationic iridium(I) complexes that lead to the formation of seven-membered rings in a single step. DFT was

Lamb Wave Phase Velocity Imaging of Concrete Plates with 2D Arrays

In the nondestructive evaluation of concrete structures, ultrasonic techniques are considered to be more capable than low-frequency techniques such as the impact-echo method. This is especially true with the recent development of ultrasonictransducers, synthetic apertures, and results in an image form, and because low-frequency techniques are usually limited intheir evaluation to the frequency of

Viktiga frågor för framtidens rapportering

Många utmaningar kvarstår för en fullt ut integrerad modell när det gäller företagens tänkande och rapportering av både finansiell och icke-finansiell information. Amanda Sonnerfeldt och Caroline A. Pontoppidan uppmanar till en bredare diskussion om framtidens redovisning.

Nu! Strategisk improvisation för effektiv kommunikation

Strategisk kommunikation är en avgörande framgångsfaktor för många organisationer, men tiden har sprungit förbi de traditionella, linjära kommunikationsmodellerna. I en värld i ständig förändring, där det handlar om att agera nu och situationsanpassat, krävs något annat. I den här boken introduceras strategisk improvisation som ett nytt sätt att tänka och agera kommunikativt. Den är skriven för di

Streptococcus pneumoniae Modulates Staphylococcus aureus Biofilm Dispersion and the Transition from Colonization to Invasive Disease.

Streptococcus pneumoniae and Staphylococcus aureus are ubiquitous upper respiratory opportunistic pathogens. Individually, these Gram-positive microbes are two of the most common causative agents of secondary bacterial pneumonia following influenza A virus infection, and they constitute a significant source of morbidity and mortality. Since the introduction of the pneumococcal conjugate vaccine, r