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P. Weinberger:
"UV-vis-NIR Spektroskopie in diffuser Reflexion in der Koordinationschemie von d- und f-Metallen";
Vortrag: COSP 2014 (Colloquium Optische Spektroskopie), Bundesanstalt für Materialprüfung Berlin (eingeladen); 17.03.2014 - 18.03.2014; in: "COSP 2014 book of abstracts", (2014).

We work with a Perkin-Elmer Lambda 900 UV-VIS-NIR spectrometer with the "Praying Mantis" ^TM accessory allowing the measurement of powder samples in diffuse reflection technique with the temperature range of 110 K to ambient temperature (see Fig. 1).

This lecture will present a few examples from our recent investigations of the coordination chemistry of d-metals and f-block elements. The challenges for the measurement set-up will be discussed and possible obstacles and the (partial) solution of problems will be presented.

The first part will be dedicated to the variable temperature measurements of Fe(II) spincrossover complexes [1]. These compounds are characterised structurally, magnetically as well as spectroscopically. The colour changes due to the electronic transition between a low- and high spin state thus allowing for a quantitative determination of the spin state ratio at any temperature measured. The second part will deal with our new investigations on lanthanide/actinide coordination chemistry such as uranyl-complexes [2] and recent results on gadolinium compounds [3] (see Fig. 2).

spin crossover, UV-vis-NIR spectrocopy

http://publik.tuwien.ac.at/files/PubDat_227830.pdf