Berlin 2014 – scientific programme

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MO: Fachverband Molekülphysik

MO 15: Experimental Techniques 3

MO 15.1: Talk

Thursday, March 20, 2014, 10:30–10:45, BEBEL SR144

Characterisation of dinuclear transition metal complexes by collision-induced dissociation studies and IRMPD spectroscopy — •Maximilian Gaffga, Joachim Hewer, Johannes Lang, Isabel Munstein, Werner Thiel, and Gereon Niedner-Schatteburg — Technische Universität Kaiserslautern, Deutschland

In extension of previous work [1], a combination of mass spectrometric and spectroscopic techniques was applied to determine the composition and structure of isolated cationic dinuclear transition metal containing complexes in the gas phase. Via the electrospray ionization technique the dinuclear metal complexes could be transferred into the gas phase and then stored in a Paul trap.

Collision-induced dissociation (CID) studies were used to get information about the fragmentation behavior of the complexes. Assignment of vibrational bands and identification of the complex coordination pattern arise from comparison of Infrared Multiple Photon Dissociation (IRMPD) spectra in the range of 1200 - 4000 cm-1 to calculated spectra (B3LYP/cc-pvDZ,ECP). Seemingly surprising fragmentation patterns are well understood on the basis of these investigations.

References: [1] Nosenko, Y.; Menges, F.; Riehn, C.; Niedner-Schatteburg, G. Phys. Chem. Chem. Phys. 2013, 15, 8171.