Dokument-ID Dokumenttyp Verfasser/Autoren Herausgeber Haupttitel Abstract Auflage Verlagsort Verlag Erscheinungsjahr Seitenzahl Schriftenreihe Titel Schriftenreihe Bandzahl ISBN Quelle der Hochschulschrift Konferenzname Quelle:Titel Quelle:Jahrgang Quelle:Heftnummer Quelle:Erste Seite Quelle:Letzte Seite URN DOI Abteilungen OPUS4-43752 misc Fondell, Mattis; Eckert, Sebastian Oliver; Jay, Raphael Martin; Weniger, Christian; Quevedo, Wilson; Niskanen, Johannes; Kennedy, Brian; Sorgenfrei, Florian; Schick, Daniel; Giangrisostomi, Erika; Ovsyannikov, Ruslan; Adamczyk, Katrin; Huse, Nils; Wernet, Philippe; Mitzner, Rolf; Föhlisch, Alexander Time-resolved soft X-ray absorption spectroscopy in transmission mode on liquids at MHz repetition rates We present a setup combining a liquid flatjet sample delivery and a MHz laser system for time-resolved soft X-ray absorption measurements of liquid samples at the high brilliance undulator beamline UE52-SGM at Bessy II yielding unprecedented statistics in this spectral range. We demonstrate that the efficient detection of transient absorption changes in transmission mode enables the identification of photoexcited species in dilute samples. With iron(II)-trisbipyridine in aqueous solution as a benchmark system, we present absorption measurements at various edges in the soft X-ray regime. In combination with the wavelength tunability of the laser system, the set-up opens up opportunities to study the photochemistry of many systems at low concentrations, relevant to materials sciences, chemistry, and biology. 2017 12 Postprints der Universität Potsdam Mathematisch-Naturwissenschaftliche Reihe 780 urn:nbn:de:kobv:517-opus4-437529 10.25932/publishup-43752 Mathematisch-Naturwissenschaftliche Fakultät OPUS4-9501 misc Winter, Alette; Thiel, Kerstin; Zabel, André; Klamroth, Tillmann; Pöppl, Andreas; Kelling, Alexandra; Schilde, Uwe; Taubert, Andreas; Strauch, Peter Tetrahalidocuprates(II) - structure and EPR spectroscopy We present and discuss the results of crystallographic and electron paramagnetic resonance (EPR) spectroscopic analyses of five tetrachloridocuprate(II) complexes to supply a useful tool for the structural characterisation of the [CuCl4]2− moiety in the liquid state, for example in ionic liquids, or in solution. Bis(benzyltriethylammonium)-, bis(trimethylphenylammonium)-, bis(ethyltriphenylphosphonium)-, bis(benzyltriphenylphosphonium)-, and bis(tetraphenylarsonium)tetrachloridocuprate(II) were synthesised and characterised by elemental, IR, EPR and X-ray analyses. The results of the crystallographic analyses show distorted tetrahedral coordination geometry of all [CuCl4]2− anions in the five complexes and prove that all investigated complexes are stabilised by hydrogen bonds of different intensities. Despite the use of sterically demanding ammonium, phosphonium and arsonium cations to obtain the separation of the paramagnetic Cu(II) centres for EPR spectroscopy no hyperfine structure was observed in the EPR spectra but the principal values of the electron Zeeman tensor, g∥ and g⊥, could be determined. With these EPR data and the crystallographic parameters we were able to carry out a correlation study to anticipate the structural situation of tetrachloridocuprates in different physical states. This correlation is in good agreement with DFT calculations. 2013 11 1019 1030 urn:nbn:de:kobv:517-opus4-95012 Institut für Chemie