Zoek in de site...

Seminar by prof. Jana Roithová (Charles University,Prague) (Lecture)

Date
Monday 19 June 2017Add to my calendar
Time
from 10:30
Location
HG00.307
Speaker
prof. Jana Roithová (Charles University,Prague)
Description


JRoithova-june17Classical mass spectrometry has wide-ranging applications in analytical chemistry, but it has two serious drawbacks in the research of reaction mechanisms: (1) mere knowledge of mass does not directly relate to the structure of detected reaction intermediates; and (2) transfer of the ions from solution to the gas-phase can lead to meaningless results. My group uses helium tagging photodissociation spectroscopy for measurements of IR and UV-Vis spectra of reactive ions to determine their structure (Acc. Chem. Res. 2016, 49, 223). Examples will show research of hypervalent metal-oxo complexes or photochemical reaction mechanisms (J. Am. Chem. Soc. 2017, 139, 2757). Our method of Delayed Reactant Labelling addresses the second problem and opens up mass spectrometry as a tool for the investigation of reactions in solution (J. Am. Chem. Soc. 2015, 137, 13647). I will demonstrate this technique in the study of intermediates in gold- and copper-catalyzed reactions.