Vibrational spectra and factor group analysis of M0.50TiOPO4 oxyphosphates (M = Mg, Zn, Ni, Co, Fe and Cu)

Raman spectra of a series of orthophosphates M0.50TiO(PO4) (M = Mg, Zn, Ni, Co, Fe, and Cu) have been recorded in crystalline state. Factor group analysis has been performed for space group P21/c and assignments of the internal modes of the [PO4] tetrahedra and [TiO6] octahedra have been made.

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► Synthesis and characterization of oxyphosphates.
► Vibrational spectroscopic study of M0.50TiO(PO4) (M = Mg, Zn, Ni, Co, Fe, and Cu).
► Correlation between Raman wavenumbers and P–O bond lengths.