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.
Highlights
The design of new solids including rare earth metal ions is an emerging field because of their potential applications in catalysis, luminescence and optoelectronics (Ramya et al, 2012; Hoppe, 2009; Mahata et al, 2008; Shehee et al, 2003)
Crystal engineering becomes challenging with non-centrosymmetric solids as it can lead to many chiral-related applications such as enantioselective separation, heterogeneous chiral catalysis or non-linear optical (NLO) effects (Ramya et al, 2012; Hoppe, 2009; Mahata et al, 2008; Shehee et al, 2003; Halasyamani & Poeppelmeier, 1998; Sweeting & Rheingold, 1987)
A rare earth metal can be a better choice than a transition metal as it provides many variations arising from coordination preferences, ligand geometry and valence states
Summary
The design of new solids including rare earth metal ions is an emerging field because of their potential applications in catalysis, luminescence and optoelectronics (Ramya et al, 2012; Hoppe, 2009; Mahata et al, 2008; Shehee et al, 2003). In particular for rare earth metal compounds, the connectivity within the crystal structure becomes novel and complex as the coordination numbers are higher than for transition metals. In this regard, crystal engineering becomes challenging with non-centrosymmetric solids as it can lead to many chiral-related applications such as enantioselective separation, heterogeneous chiral catalysis or non-linear optical (NLO) effects (Ramya et al, 2012; Hoppe, 2009; Mahata et al, 2008; Shehee et al, 2003; Halasyamani & Poeppelmeier, 1998; Sweeting & Rheingold, 1987).
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Acta crystallographica. Section E, Crystallographic communications
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
