Abstract
The IR and Raman spectra are measured and analysed for sodium pyrophosphate decahydrate. The spectra are interpreted on the basis of P2O 4−7 ion and water vibrations. The observed results fit with the features predicted for the factor goup model. The appearance of two sets of frequencies in the stretching and bending regions of water suggests the existence of two kinds of water molecules in the crystal. This is confirmed by deuterium substitution.
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Ramakrishnan, V., Kalkura, S.N. & Rajagopal, P. Vibrational spectra of Na4P2O7·10H2O. Pramana - J Phys 34, 555–560 (1990). https://doi.org/10.1007/BF02846431
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DOI: https://doi.org/10.1007/BF02846431