Synthesis and crystal structure of a new polymorph of potassium europium(III) bis(sulfate) mono-hydrate, KEu(SO4)2·H2O.

ABSTRACT: The mixed-metal sulfate, KEu(SO4)2·H2O, has been obtained as a new polymorph using hydro-thermal conditions. The crystal structure is isotypic with NaCe(SO4)2·H2O and shows a three-dimensional connectivity of the tetra-hedral sulfate units with EuIII and KI ions. Tricapped trigonal-prismatic EuO9 units and square-anti-prismatic KO8 units link the SO4 tetra-hedra, building the three-dimensional structure. Topological analysis reveals the existence of two nodes with 6- and 10-connected nets. The compound was previously reported [Kazmierczak & Höppe (2010 ▸). J. Solid State Chem.183, 2087-2094] in the monoclinic space group P21/c with a similar structural connectivity and coordination environments to the present compound.

SUBMITTER: Paul AK 

PROVIDER: S-EPMC5956346 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature