Raman spectroscopic study of Bi2(MoO4)3

Abstract

Polarized Raman spectra measured on single crystals of Bi2(MoO4)3 are presented for the first time. An assignment of the observed peaks is performed on the basis of calculated vibrational modes of a representative cluster composed of three MoO4 and two BiO8. The analysis of the Raman spectra shows that in Bi2(MoO4)3 the long-range electrostatic and the Bi - O - Mo bond bending interactions contribute substantially to the potential and the internal polyhedral modes are strongly influenced by the environment of the oxygen atoms. Copyright κ 1999 John Wiley & Sons, Ltd.