Dipl.-Chem. Tobias A. Engesser, Dr. Peter Hrobárik, Dr. Nils Trapp, Dr. Philipp Eiden, Dr. Harald Scherer, Prof. Dr. Martin Kaupp and Prof. Dr. Ingo Krossing [TeX3]+ Cations Stabilized by the Weakly Coordinating [Al(ORF)4]− Anion: FIR Spectra, Raman Spectra, and Evaluation of an Abnormal Halogen Dependence of the 125Te NMR Chemical Shifts ChemPlusChem 77
TeX3[Al(ORF)4] have been synthesized and characterized by 125Te NMR in solution and by X-ray diffraction, Raman, and IR spectroscopy in the solid state (X=Cl, Br, I; RF=C(CF3)3). The vibrational analysis shows a very weak contact of [TeX3]+ to the anion. The observed “abnormal halogen dependence” of the 125Te NMR chemical shifts results from an interplay of relativistic and solvent effects.
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