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

Zibrowius, Bodo; Felderhoff, Michael

doi:10.1039/C9CP01059A

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

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

MPS-Authors

/persons/resource/persons59145

Zibrowius, Bodo
Service Department Farès (NMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society;

/persons/resource/persons58541

Felderhoff, Michael
Research Group Felderhoff, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

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.

Cite as: https://hdl.handle.net/21.11116/0000-0004-73E5-8

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: δ_iso = (107.6 ± 0.2) ppm, C_Q = (1.29 ± 0.02) MHz and η = 0.64 ± 0.02; ³⁹K: δ_iso = (6.1 ± 0.2) ppm, C_Q = (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.