BaSr3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Ba(1) is bonded to twelve Sr(1,1) atoms to form BaSr12 cuboctahedra that share corners with six equivalent Ba(1)Sr12 cuboctahedra; corners with twelve Sr(1,1)Ba4Sr8 cuboctahedra; edges with eighteen Sr(1,1)Ba4Sr8 cuboctahedra; faces with eight equivalent Ba(1)Sr12 cuboctahedra; and faces with twelve Sr(1,1)Ba4Sr8 cuboctahedra. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to four equivalent Ba(1) and eight Sr(1,1) atoms to form SrBa4Sr8 cuboctahedra that share corners with four equivalent Ba(1)Sr12 cuboctahedra; corners with fourteen Sr(1,1)Ba4Sr8 cuboctahedra; edges with six equivalent Ba(1)Sr12 cuboctahedra; edges with twelve Sr(1,1)Ba4Sr8 cuboctahedra; faces with four equivalent Ba(1)Sr12 cuboctahedra; and faces with sixteen Sr(1,1)Ba4Sr8 cuboctahedra. In the second Sr site, Sr(1) is bonded to four equivalent Ba(1) and eight Sr(1,1) atoms to form SrBa4Sr8 cuboctahedra that share corners with four equivalent Ba(1)Sr12 cuboctahedra; corners with fourteen Sr(1,1)Ba4Sr8 cuboctahedra; edges with six equivalent Ba(1)Sr12 cuboctahedra; edges with twelve Sr(1,1)Ba4Sr8 cuboctahedra; faces with four equivalent Ba(1)Sr12 cuboctahedra; and faces with sixteen Sr(1,1)Ba4Sr8 cuboctahedra.
BaSr3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Ba(1) is bonded to twelve Sr(1,1) atoms to form BaSr12 cuboctahedra that share corners with six equivalent Ba(1)Sr12 cuboctahedra; corners with twelve Sr(1,1)Ba4Sr8 cuboctahedra; edges with eighteen Sr(1,1)Ba4Sr8 cuboctahedra; faces with eight equivalent Ba(1)Sr12 cuboctahedra; and faces with twelve Sr(1,1)Ba4Sr8 cuboctahedra. All Ba(1)-Sr(1,1) bond lengths are 4.38 Å. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to four equivalent Ba(1) and eight Sr(1,1) atoms to form SrBa4Sr8 cuboctahedra that share corners with four equivalent Ba(1)Sr12 cuboctahedra; corners with fourteen Sr(1,1)Ba4Sr8 cuboctahedra; edges with six equivalent Ba(1)Sr12 cuboctahedra; edges with twelve Sr(1,1)Ba4Sr8 cuboctahedra; faces with four equivalent Ba(1)Sr12 cuboctahedra; and faces with sixteen Sr(1,1)Ba4Sr8 cuboctahedra. There are a spread of Sr(1)-Sr(1,1) bond distances ranging from 4.34-4.42 Å. In the second Sr site, Sr(1) is bonded to four equivalent Ba(1) and eight Sr(1,1) atoms to form SrBa4Sr8 cuboctahedra that share corners with four equivalent Ba(1)Sr12 cuboctahedra; corners with fourteen Sr(1,1)Ba4Sr8 cuboctahedra; edges with six equivalent Ba(1)Sr12 cuboctahedra; edges with twelve Sr(1,1)Ba4Sr8 cuboctahedra; faces with four equivalent Ba(1)Sr12 cuboctahedra; and faces with sixteen Sr(1,1)Ba4Sr8 cuboctahedra. Both Sr(1)-Sr(1) bond lengths are 4.35 Å.