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125Te NMR tomography of [Re6] cluster in Re6Te15 and related cluster compounds
S G Kozlova1, S P Gabuda, V V Terskikh
1Nikolayev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, Lavrentieva 3, Novosibirsk 630090, Russia.
Abstract:
The static and magic angle spinning NMR solid-state spectra of Re6Te15 and a series of Re(6)-Te cluster compounds demonstrate the positive and negative 125Te NMR chemical shifts indicating that the [Re6] cluster distorts strongly magnetic field at the neighboring Te sites. The local magnetic field is decreased at the facial tellurium sites (Teface) and enhanced at the apexial tellurium sites (Teapex). The facial and sagittal sections of the Re(6)-Te clusters were reconstructed from analysis of Teface and Teapex NMR spectra, respectively.
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