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Aluminium‐27 MAS NMR of Al 2 Ge 2 O 7 and LaAlGe 2 O 7 : Two pentacoordinated aluminium environments
Author(s) -
Massiot Dominique,
KahnHarari Andrée,
Michel Daniel,
Muller Dirk,
Taulelle Francis
Publication year - 1990
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260281314
Subject(s) - chemistry , aluminium , impurity , isotropy , nmr spectra database , spinning , spectral line , characterization (materials science) , analytical chemistry (journal) , organic chemistry , optics , physics , astronomy , polymer chemistry
Abstract Characterization by 27 Al MAS NMR of two pentacoordinated environments of aluminium has been carried out in different fields and at different spinning speeds for Al 2 Ge 2 O 7 and LaAlGe 2 O 7 . Complete simulations of the spectra have been performed, including computation of the individual shape and intensity of each spinning side band, which lead to the determination of both the quadrupolar interaction parameters and isotropic chemical shifts, and enable the detection of impurities in the material. The parameters determined are:.