Abstract
The infrared and Raman spectra of crystalline samples of NdP5O14, NaNdP4O12 and KNdP4O12 are recorded. The spectra are analysed on the basis of vibrations of P=O, P-O, PO2 and P-O-P groups. The P4O 4−12 ion has cyclic structures both in NaNdP4O12 and KNdP4O12 crystals. It has been inferred that the P-O-P bridges are stronger in metaphosphates.
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Ramakrishnan, V., Kumar, J., Thirumavalavan, M. et al. Infrared and raman studies on neodymium pentaphosphate and metaphosphates. Pramana - J Phys 33, 659–665 (1989). https://doi.org/10.1007/BF02845690
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DOI: https://doi.org/10.1007/BF02845690