Die Infrarotspektren einiger Orthovanadate mit Apatitstruktur

The infrared spectra (4000–300 cm^?1) of orthovanadates with apatite structure, of the formula M₅(VO₄)₃X (M = Ca, Sr, Ba and X = F, Cl, Br) are measured and interpreted. The influence of the cations and of the halogen anions about the internal vibrations of the VO ions is discussed.