On the hydroxyl ions in apatites
Abstract
The possible mechanism originating the stretching and librational bands of the OH groups in ir spectra of various apatites are discussed. On the basis of relating the νs frequency of the V3 hindered potential barrier, it is deduced that hydrogen bonds between the OH groups and the nearest O's of PO 3-4 ions exist, and that they are responsible for the observed frequencies of the stretching and librational modes. The additional ir OH bands of heated nonstoichiometric hydroxylapatites are also discussed.
- Publication:
-
Journal of Solid State Chemistry France
- Pub Date:
- October 1977
- DOI:
- 10.1016/0022-4596(77)90037-8
- Bibcode:
- 1977JSSCh..22..193G