Raman spectra of niobium oxides

A.Ann McConnell; J.S. Anderson; C.N.R. Rao

doi:10.1016/0584-8539(76)80291-7

Raman spectra of niobium oxides

A.Ann McConnell, J.S. Anderson, C.N.R. Rao

Pure And Applied Chemistry

Research output: Contribution to journal › Article › peer-review

153 Citations (Scopus)

Abstract

Raman spectra of various types of niobium oxides have been studied along with their i.r. spectra and the spectra interpreted in the light of the structures of the oxides. Besides discussing LO-TO splitting in these oxides, bands characteristic of edge-shared and corner-shared NbO6, octahedra have been assigned. Tetrahedral modes of NbO4, PO4, and VO4 units present in some of the oxides have been assigned to distinct bands in the spectra indicating negligible coupling between the tetrahedra and NbO6 octahedra. The spectra of PNb9O25 and analogues suggest that they belong to I4/m space group rather than IZ group.

Original language	English
Pages (from-to)	1067-1076
Number of pages	9
Journal	Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
Volume	32
Issue number	5
DOIs	https://doi.org/10.1016/0584-8539(76)80291-7
Publication status	Published - 1976

Keywords

raman spectra
niobium oxides
i.r. spectra

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10.1016/0584-8539(76)80291-7

Cite this

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title = "Raman spectra of niobium oxides",

abstract = "Raman spectra of various types of niobium oxides have been studied along with their i.r. spectra and the spectra interpreted in the light of the structures of the oxides. Besides discussing LO-TO splitting in these oxides, bands characteristic of edge-shared and corner-shared NbO6, octahedra have been assigned. Tetrahedral modes of NbO4, PO4, and VO4 units present in some of the oxides have been assigned to distinct bands in the spectra indicating negligible coupling between the tetrahedra and NbO6 octahedra. The spectra of PNb9O25 and analogues suggest that they belong to I4/m space group rather than IZ group.",

keywords = "raman spectra, niobium oxides, i.r. spectra",

author = "A.Ann McConnell and J.S. Anderson and C.N.R. Rao",

year = "1976",

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journal = "Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy ",

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TY - JOUR

T1 - Raman spectra of niobium oxides

AU - McConnell, A.Ann

AU - Anderson, J.S.

AU - Rao, C.N.R.

PY - 1976

Y1 - 1976

N2 - Raman spectra of various types of niobium oxides have been studied along with their i.r. spectra and the spectra interpreted in the light of the structures of the oxides. Besides discussing LO-TO splitting in these oxides, bands characteristic of edge-shared and corner-shared NbO6, octahedra have been assigned. Tetrahedral modes of NbO4, PO4, and VO4 units present in some of the oxides have been assigned to distinct bands in the spectra indicating negligible coupling between the tetrahedra and NbO6 octahedra. The spectra of PNb9O25 and analogues suggest that they belong to I4/m space group rather than IZ group.

AB - Raman spectra of various types of niobium oxides have been studied along with their i.r. spectra and the spectra interpreted in the light of the structures of the oxides. Besides discussing LO-TO splitting in these oxides, bands characteristic of edge-shared and corner-shared NbO6, octahedra have been assigned. Tetrahedral modes of NbO4, PO4, and VO4 units present in some of the oxides have been assigned to distinct bands in the spectra indicating negligible coupling between the tetrahedra and NbO6 octahedra. The spectra of PNb9O25 and analogues suggest that they belong to I4/m space group rather than IZ group.

KW - raman spectra

KW - niobium oxides

KW - i.r. spectra

U2 - 10.1016/0584-8539(76)80291-7

DO - 10.1016/0584-8539(76)80291-7

M3 - Article

VL - 32

SP - 1067

EP - 1076

JO - Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy

JF - Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy

SN - 1386-1425

IS - 5

ER -