Low-temperature structure of KUO2PO4·3D2O determined from combined synchrotron radiation and neutron powder diffraction measurements

Abstract

The crystal structure of the low-temperature, ordered phase of KUO₂PO₄·3D₂O, a derivative of the proton conductor HUO₂PO₄·4H₂O, has been determined from a combination of high-resolution powder diffraction measurements using neutrons and synchrotron radiation. The structure is orthorhombic, space group P2₁cn, with a= 6.9931(4)Å, b= 6.9733(4)Å and c= 17.6113(8)Å at 10 K.