Etude spectroscopique du role des liaisons PF et PO pontes dans les composes oxyfluores du phosphore V. Cas de P2O3F4 et de K2P2O5F2. |
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Authors: | E Payen A Addou J Durand L Cot P Vast |
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Institution: | 1. Laboratoire de spectrochimie ir et raman (CNRS) - Université des sciences et techniques de lille - Bât C5 - 59655 Villeneuve d''ascq Cedex France.;2. UER de chimie - Bât C8 - Université des Sciences et techniques de lille 59655 Villeneuve d''ascq Cedex France.;3. Laboratoire de chimie des matériaux - E.N.S.C.M. 8 rue de l''ecole normale - 34075 Montpelier Cedex France. |
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Abstract: | The compounds P2O3F4 and K2P2O5F2 have been studied by vibrational spectroscopy. From the shifts of the symmetric vibration of the terminal PO bonds it appears that the molecular structure contracts as the number of PO (bridged) and/or PF bonds increases. The changes occur at the expense of PO terminal bonds. In these tetrahedral phosphorus (V) compounds the PO (bridged) and PF bonding have a similar role, and the same phenomenon occurs in sulfur VI oxide fluoride compounds. |
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