The crystal structure of caesium neodymium(III) sulfate, CsNd(SO4)2, was determined from intensity data collected on a Rigaku tabletop XtaLAB mini II diffractometer at the International Union of Crystallography Congress 2017, in Hyderabad, India. CsNd(SO4)2 is the fourth crystal structure to be reported in the CsPr(SO4)2 family: the Cs and Nd atoms have site symmetries of 2.. and ..2, respectively. In the extended structure, NdO8 square antiprisms and SO4 tetrahedra are connected into layers, which propagate in the (101) plane and CsO14 polyhedra connect the layers into a three-dimensional network.
