Rochelle salt - a structural reinvestigation with improved tools. I. The high-temperature para-electric phase at 308 K.

The crystal structure of the high-temperature paraelectric phase of Rochelle salt (K(+)·Na(+)·C4H4O6 (2-)·4H2O) at 308 K has been reinvestigated using synchrotron X-ray diffraction with refinement parameters R(int) = 0.0123, final (shift/e.s.