Zur Elektronenstruktur hochsymmetrischer Verbindungen der f‐Elemente. 42 Ableitung und Simulation des Kristallfeld‐Aufspaltungsmusters von Tris(bis(trimethylsilyl)amido)ytterbium(III) |
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| Authors: | Stefan Jank Hauke Reddmann Christos Apostolidis Hanns‐Dieter Amberger Prof Dr |
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| Institution: | 1. Hamburg, Institut für Anorganische und Angewandte Chemie der Universit?t;2. Karlsruhe, Europ?ische Kommission, Gemeinsame Forschungsstelle, Institut für Transurane;3. Hamburg, Institut für Anorganische und Angewandte Chemie der Universit?tInstitut für Anorganische und Angewandte Chemie der Universit?t, Martin‐Luther King‐Platz 6, D‐20146 Hamburg, Fax: +49 40 42838‐2893 |
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| Abstract: | Electronic Structures of Highly Symmetrical Compounds of f Elements. 42 Derivation and Simulation of the Crystal Field Splitting Pattern of Tris(bis(trimethylsilyl)amido)ytterbium(III) Tris(bis(trimethylsilyl)amido)ytterbium(III), (Yb(btmsa)3 ( 1 )) was grown as a single crystal of the size 6×2×2 mm. The unpolarized absorption and luminescence as well as the σ and π absorption spectra of this crystal were recorded at room and low temperatures. The observed polarization properties as well as identificational calculations allowed the separation of zero‐phonon‐ and phonon‐assisted transitions of comparable intensities. The thus derived crystal field splitting pattern could be simulated by fitting the free parameters of a phenomenological Hamiltonian. In order to assign the coupling vibrations, FIR/MIR‐ and unpolarized Raman spectra of 1 as well as polarized Raman spectra of Y(btmsa)3 ( 2 ) were recorded and compared with previously assigned ones of MeGa(btmsa)2 and H(btmsa). |
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| Keywords: | Rare‐earth compounds N ligands Optical properties Raman spectra Crystal field analysis Molecular orbital scheme |
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