Vibrational spectra of MII3Pb(P2O7)2 (MII = Ni,Co) |
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| Affiliation: | 1. Division of Urology, Massachusetts General Hospital & Brigham and Women''s Hospital, Boston, MA;2. Department of Radiology, St. Joseph''s Healthcare, Hamilton, Ontario, Canada;3. Department of Urology, McMaster University, Hamilton, Ontario, Canada;1. College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China;2. Academic Affairs Office, Henan Polytechnic University, Jiaozuo, Henan 454000, China;1. Universidad Andres Bello, Facultad de Ciencias Exactas, Departamento de Ciencias Químicas, Av. Quillota 980, Viña del Mar, Chile;2. Instituto de investigación en Innovación en Salud, Facultad de Ciencias de la Salud, Universidad Central de Chile, Lord Cochrane 417, Santiago, Chile;3. Laboratorio de Análisis de Sólidos, Departamento de Ciencias Químicas, Universidad Andrés Bello, Chile;4. Univ Rennes, CNRS, ISCR – UMR 6226, F-35000 Rennes, France;5. Univ Rennes, INSA Rennes, CNRS, ISCR – UMR 6226, F-35000 Rennes, France;6. Centro para el Desarrollo de la Nanociencia y la Nanotecnología, CEDENNA, Chile;1. Department of Materials Science & Engineering, Myongji University, Yongin 17058, South Korea;2. Department of Materials Science & Engineering, Seoul National University, Seoul 08826, South Korea;3. Department of Materials Science & Engineering, Ajou University, Suwon 16499, South Korea;4. Department of Energy Systems Research, Ajou University, Suwon 16499, South Korea;1. Siberian Federal University, 79 Svobodny Av, Krasnoyarsk, 660041, Russian Federation;2. Institute of Physics SB RAS, Krasnoyarsk 660036, Russian Federation |
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| Abstract: | Raman and IR spectra of polycrystalline Ni3Pb(P2O7)2 and Co3Pb(P2O7)2 have been recorded and analyzed. The internal modes are assigned in terms of PO3 and POP vibrations. The results point to a bent POP bridge configuration in Co3Pb(P2O7)2 as in Ni3Pb(P2O7)2. In the cobalt compound, the P2O4−7 ions are distorted. Non-coincidence of the majority of the Raman and IR bands confirms a centrosymmetric structure for Ni3Pb(P2O7)2, and Co3Pb(P2O7)2. The POP bridge angle is slightly higher in the cobalt compound than in the nickel compound. |
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