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  On the preparation and NMR spectroscopic characterization of potassium aluminium tetrahydride KAlH4

Zibrowius, B., & Felderhoff, M. (2019). On the preparation and NMR spectroscopic characterization of potassium aluminium tetrahydride KAlH4. Physical Chemistry Chemical Physics, 21(23), 12576-12584. doi:10.1039/C9CP01059A.

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 Creators:
Zibrowius, Bodo1, Author           
Felderhoff, Michael2, Author           
Affiliations:
1Service Department Farès (NMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445623              
2Research Group Felderhoff, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_3027887              

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 Abstract: Potassium aluminium tetrahydride KAlH4 of high phase purity (space group Pnma (62)) was synthesized via a mechanochemical route. The thus obtained material was studied by 27Al and 39K MAS NMR spectroscopy. For both nuclei precise data for the isotropic chemical shift and the quadrupole coupling at T = 295 K were derived (27Al: δiso = (107.6 ± 0.2) ppm, CQ = (1.29 ± 0.02) MHz and η = 0.64 ± 0.02; 39K: δiso = (6.1 ± 0.2) ppm, CQ = (0.562 ± 0.005) MHz and η = 0.74 ± 0.02). The straightforward NMR spectroscopic approach applied here should also work for other complex aluminium hydrides and for many other materials containing half-integer nuclei experiencing small to medium-sized quadrupole couplings.

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Language(s): eng - English
 Dates: 2019-02-222019-05-172019-06-21
 Publication Status: Published in print
 Pages: 9
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1039/C9CP01059A
 Degree: -

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Title: Physical Chemistry Chemical Physics
  Abbreviation : Phys. Chem. Chem. Phys.
Source Genre: Journal
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Publ. Info: Cambridge, England : Royal Society of Chemistry
Pages: - Volume / Issue: 21 (23) Sequence Number: - Start / End Page: 12576 - 12584 Identifier: ISSN: 1463-9076
CoNE: https://pure.mpg.de/cone/journals/resource/954925272413_1