Determination of the hydride concentration in alkyldiboranes(6) by 11B NMR spectroscopy – Reduction of inorganic selenium and tellurium compounds |
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| Authors: | B Wrackmeyer Hans-Jörg Schanz Wilhelm Schüßler Roland Köster |
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| Institution: | Universit?t Bayreuth, Anorganische Chemie II, D-95440 Bayreuth, Germany, DE
Max-Planck-Institut für Kohlenforschung, D-45466 Mülheim a. d. Ruhr, Germany, DE
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| Abstract: | As an alternative to volumetric analysis, 11B NMR spectroscopy can be used to determine the hydride concentration and the relative amount of different active hydride species in mixtures of alkyldiboranes(6) (alkyl = Et, Pr). Inorganic selenium(IV) compounds react with propyldiboranes(6) at first to give elemental selenium (hydride number HN = 4) and after prolonged heating at 130?°C to selenides (HN = 6). In contrast, tellurium(IV) and tellurium(VI) compounds are reduced only to elemental tellurium. |
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