Preparation and properties of Sr2VO4Cl and Sr2VO4Br with the spodiosite—type structure

The com pounds Sr2VO4Cl and Sr2VO4Br have been prepared in single crystal form by a flux reaction technique. Both crystallize in the Pbcm space group of the mineral spodiosite, Ca2PO4F. Lattice constants, IR and Raman spectra, and fluorescent emission spectra are reported. Under 2537Å excitation, Sr2VO4Cl and Sr2VO4Br fluoresce in the blue and green, respectively.