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Aime S, Digilio G, Gobetto R, et al. Relationship between Solid State NMR Parameters and X-ray Structural Data in Tricadmium Phosphates. Inorg Chem. 1996;35(1):149-154doi: 10.1021/ic950462r.
Aime, S., Digilio, G., Gobetto, R., Bigi, A., Ripamonti, A., Roveri, N., & Gazzano, M. (1996). Relationship between Solid State NMR Parameters and X-ray Structural Data in Tricadmium Phosphates. Inorganic chemistry, 35(1), 149-154. https://doi.org/10.1021/ic950462r
Aime, S., et al. "Relationship between Solid State NMR Parameters and X-ray Structural Data in Tricadmium Phosphates." Inorganic chemistry vol. 35,1 (1996): 149-154. doi: https://doi.org/10.1021/ic950462r
Aime S, Digilio G, Gobetto R, Bigi A, Ripamonti A, Roveri N, Gazzano M. Relationship between Solid State NMR Parameters and X-ray Structural Data in Tricadmium Phosphates. Inorg Chem. 1996 Jan 03;35(1):149-154. doi: 10.1021/ic950462r. PMID: 11666177.
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Inorg Chem. 1996 Jan 03;35(1):149-154. doi: 10.1021/ic950462r.

Relationship between Solid State NMR Parameters and X-ray Structural Data in Tricadmium Phosphates.

Inorganic chemistry

S. Aime, G. Digilio, R. Gobetto, A. Bigi, A. Ripamonti, N. Roveri, M. Gazzano

Affiliations

  1. Centro di studio per la Fisica delle Macromolecole (CNR), c/o Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via Selmi 2, 40126, Bologna, Italy.

PMID: 11666177 DOI: 10.1021/ic950462r

Abstract

31P and (113)Cd MAS NMR spectra of solid beta'-tricadmium phosphate (beta'-TCdP) show a number of highly resolved resonances that agree well with the number of independent crystallographic sites indicated by the results of X-ray diffraction studies. A correlation of the (31)P chemical shifts with the crystallographic sites for the six different PO(4)(3)(-) groups in the unit cell of beta'-TCdP has been obtained by a method based on the computation of bond strength at oxygen atoms in phosphate moieties. The assignment of the (113)Cd resonances has been carried out on the basis of the relationship between the asymmetry of the chemical shift tensor (evaluated by analysis of the spinning side bands intensities in the MAS spectrum) and a geometric parameter related to the distortion from the bipyramidal trigonal coordination at each cadmium center. Samples of tricadmium phosphate with different degrees of magnesium substitution for cadmium were investigated by (31)P MAS NMR, (113)Cd MAS NMR, and X-ray diffraction. The results of these investigations showed that the magnesiums distribute randomly in the cadmium sites, inducing a marked decrease in the order of the structure.

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