Neutron diffraction study of aluminous hydroxide δ-AlOOD

Neutron diffraction study of aluminous hydroxide δ-AlOOD

We have determined the position of deuterium atoms in δ-AlOOD by neutron powder diffraction at ambient pressure. As previously reported by theoretical and experimental studies, the deuterium atoms are located in the tunnel formed by the chains of AlO6 octahedra. The data are best fit with the P21nm...

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Veröffentlicht in:Physics and chemistry of minerals 2007-11, Vol.34 (9), p.657-661
Hauptverfasser: Vanpeteghem, C. B., Sano, A., Komatsu, K., Ohtani, E., Suzuki, A.
Format: Artikel
Sprache:eng
Schlagworte:
Crystals
Deuterium
Hydrogen bonds
Neutron diffraction
Neutrons
Pressure
Single crystals
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Zusammenfassung:We have determined the position of deuterium atoms in δ-AlOOD by neutron powder diffraction at ambient pressure. As previously reported by theoretical and experimental studies, the deuterium atoms are located in the tunnel formed by the chains of AlO6 octahedra. The data are best fit with the P21nm structure, producing bond lengths of D–O1 of 1.552(2) Å, O2–D of 1.020(2) Å and O1–O2 of 2.571(2). This study confirms that the hydrogen bond is asymmetric at ambient conditions in agreement with recent single-crystal synchrotron study for δ-AlOOH.
ISSN:0342-1791
1432-2021
DOI:10.1007/s00269-007-0180-8