The infrared and Raman spectra of three tetrametaphosphatesM2P4O12 (M = Fe, Ni, Zn) have been recorded and analysed. A factor group model has been used to interpret the spectra of Fe2P4O12 and Ni2P4O12. A free ion model could explain the Zn2P4O12 spectra. The frequencies have been assigned on the basis of characteristic vibrations of PO22− and P-O-P groups. The P4O124− ion is found to haveCi symmetry in Fe2P4O12 and Ni2P4O12 andC24 in Zn2P4O12. The ion in Fe2P4O12 is more distorted than in the other two.
Volume 134, 2022
Continuous Article Publishing mode
Click here for Editorial Note on CAP Mode