Single-crystal Raman spectra of arsenolite (As4O6) and senarmonite (Sb4O6). The gas-phase Raman spectra of P4O6, P4O10, and As4O6

Abstract

The observed fundamentals of the cubic form of As₄O₆(arsenolite) are unambiguously assigned from single-crystal measurements. Data are also reported for the isomorphous senarmonite (Sb₄O₆) which (in the mineral) contains small quantities of the orthorhombic polymorph valentinite (Sb₄O₆). The gas-phase Raman spectra of P₄O₁₀, P₄O₆, and As₄O₆(together with polarization data) suggest that the cage structure is retained in the gas phase.