Synthesis and Structure of the Zintl Phase SrSn(3)Sb(4).
The new Zintl compound strontium tin antimonide, SrSn(3)Sb(4), has been synthesized, and its structure has been determined by single-crystal X-ray diffraction methods. It crystallizes in the orthorhombic space group -Pnma with a = 10.060(2) Å, b = 4.361(1) Å, c = 22.934(4) Å, and Z = 4 at 22 degrees C. The structure of SrSn(3)Sb(4) may be described as consisting of large, narrow channels running along [010] defined by 30-membered rings constructed from an anionic framework of linked SnSb(4) tetrahedra, SnSb(3) trigonal pyramids, and zigzag Sb-Sb chains. Sr(2+) cations are situated within these channels. The channel structures of SrSn(3)Sb(4) and Ba(2)Sn(3)Sb(6) are closely related.
Chow
Donna T.
DT
Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2.
McDonald
Robert
R
Mar
Arthur
A