Abstract
The title compound, Eu5Cd2Sb5O adopts the Ba5Cd2Sb5F-type structure (Pearson symbol oC52), which contains nine crystallographically unique sites in the asymmetric unit, all on special positions. One Eu, two Sb, and the Cd atom have site symmetry m..; two other Eu, the third Sb and the O atom have site symmetry m2m; the remaining Eu atom has 2/m.. symmetry. Eu atoms fill pentagonal channels built from corner-sharing CdSb4 tetrahedra. The isolated O atom, i.e., an oxide ion O2−, is located in a distorted tetrahedral cavity formed by four Eu cations.
Highlights
The title compound, Eu5Cd2Sb5O adopts the Ba5Cd2Sb5Ftype structure (Pearson symbol oC52), which contains nine crystallographically unique sites in the asymmetric unit, all on special positions
The isolated O atom, i.e., an oxide ion O2, is located in a distorted tetrahedral cavity formed by four Eu cations
The Cd–Sb interactions [2.8413 (5) Å to 2.9624 (8) Å] are comparable to the sum of the covalent radii (Pauling, 1960) and to distances found in other structures based on CdSb4 tetrahedra [Ba3Cd2Sb4 (Saparov et al, 2008a), Ba21Cd4Sb18
Summary
Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA R factor = 0.020; wR factor = 0.044; data-to-parameter ratio = 23.7. The title compound, Eu5Cd2Sb5O adopts the Ba5Cd2Sb5Ftype structure (Pearson symbol oC52), which contains nine crystallographically unique sites in the asymmetric unit, all on special positions. One Eu, two Sb, and the Cd atom have site symmetry m..; two other Eu, the third Sb and the O atom have site symmetry m2m; the remaining Eu atom has 2/m.. symmetry. Eu atoms fill pentagonal channels built from corner-sharing CdSb4 tetrahedra. The isolated O atom, i.e., an oxide ion O2 , is located in a distorted tetrahedral cavity formed by four Eu cations.
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 Structure Reports Online
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.
