title: Infrared spectroscopy of different phosphates structures.
abstract: Infrared (IR) spectroscopic studies of mineral and synthetic phosphates have been presented. The interpretation of the spectra has been preceded by the isolated [PO(4)](3-) tetrahedron spectra analyse. The K(3)PO(4) saturated aqueous solution was measured in the special cell for liquids. The obtained IR results have been compared with the theoretical number of IR-active modes. The number and positions of the bands due to P-O vibrations have been established. The phase composition of the phosphates has been determined using XRD and IR spectroscopy methods. The influence of non-tetrahedral cations on the shape of the spectra and the positions of bands has been analysed and the crystalline field splitting effect has been discussed.
authors.affiliation: AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Al. Mickiewicza 30, 30-059 Krakow, Poland. witjas@agh.edu.pl
authors.forename: W
authors.initials: W
authors.lastname: Jastrzębski
authors.forename: M
authors.initials: M
authors.lastname: Sitarz
authors.forename: M
authors.initials: M
authors.lastname: Rokita
authors.forename: K
authors.initials: K
authors.lastname: Bułat
mesh_terms: D003460:Crystallization; D006801:Humans; D010710:Phosphates / Q000737:chemistry*; D017680:Potassium Compounds / Q000737:chemistry; D012996:Solutions; D013055:Spectrophotometry, Infrared; D013059:Spectrum Analysis, Raman; D014732:Vibration
chemical_list: D010710:Phosphates; D017680:Potassium Compounds; D012996:Solutions; C013216:potassium phosphate