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Title: Raman and infrared spectroscopic studies of the low- and high-temperature forms of octahalo cyclic phosphazene tetramers, P4N4Cl8 and P4N4F8
Authors: Varma, Vijay
Fernandes, J R
Rao, C N R
Keywords: Raman spectra
infrared spectroscopic
octahalo cyclic phosphazene tetramers
phase transition
Issue Date: Jul-1989
Publisher: Elsevier Science BV
Citation: Journal Of Molecular Structure 198, 403-412 (1989)
Abstract: Based on a study of the Raman and infrared spectra, normal vibrations of the low-temperature skew-tub (S4) and high-temperature Ci or C2h (skew-chair) forms of P4N4Cl8 have been assigned. A temperature variation study of the Raman spectra has shown the coexistence of both the forms of P4N4Cl8 in the phase transition region. Preliminary assignments of the Raman and infrared spectra of the low- and high-temperature forms of P4N4F8 are presented. One of the low-frequency Raman modes softens through the phase transition of P4N4F8 at 199 K.
Description: Restricted Access
Other Identifiers: 0022-2860
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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