SrPr3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Sr(1) is bonded to twelve Pr(1,1) atoms to form SrPr12 cuboctahedra that share corners with six equivalent Sr(1)Pr12 cuboctahedra; corners with twelve Pr(1,1)Sr4Pr8 cuboctahedra; edges with eighteen Pr(1,1)Sr4Pr8 cuboctahedra; faces with eight equivalent Sr(1)Pr12 cuboctahedra; and faces with twelve Pr(1,1)Sr4Pr8 cuboctahedra. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded to four equivalent Sr(1) and eight Pr(1,1) atoms to form distorted PrSr4Pr8 cuboctahedra that share corners with four equivalent Sr(1)Pr12 cuboctahedra; corners with fourteen Pr(1,1)Sr4Pr8 cuboctahedra; edges with six equivalent Sr(1)Pr12 cuboctahedra; edges with twelve Pr(1,1)Sr4Pr8 cuboctahedra; faces with four equivalent Sr(1)Pr12 cuboctahedra; and faces with sixteen Pr(1,1)Sr4Pr8 cuboctahedra. In the second Pr site, Pr(1) is bonded to four equivalent Sr(1) and eight Pr(1,1) atoms to form distorted PrSr4Pr8 cuboctahedra that share corners with four equivalent Sr(1)Pr12 cuboctahedra; corners with fourteen Pr(1,1)Sr4Pr8 cuboctahedra; edges with six equivalent Sr(1)Pr12 cuboctahedra; edges with twelve Pr(1,1)Sr4Pr8 cuboctahedra; faces with four equivalent Sr(1)Pr12 cuboctahedra; and faces with sixteen Pr(1,1)Sr4Pr8 cuboctahedra.
SrPr3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Sr(1) is bonded to twelve Pr(1,1) atoms to form SrPr12 cuboctahedra that share corners with six equivalent Sr(1)Pr12 cuboctahedra; corners with twelve Pr(1,1)Sr4Pr8 cuboctahedra; edges with eighteen Pr(1,1)Sr4Pr8 cuboctahedra; faces with eight equivalent Sr(1)Pr12 cuboctahedra; and faces with twelve Pr(1,1)Sr4Pr8 cuboctahedra. There are six shorter (3.84 Å) and six longer (3.87 Å) Sr(1)-Pr(1,1) bond lengths. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded to four equivalent Sr(1) and eight Pr(1,1) atoms to form distorted PrSr4Pr8 cuboctahedra that share corners with four equivalent Sr(1)Pr12 cuboctahedra; corners with fourteen Pr(1,1)Sr4Pr8 cuboctahedra; edges with six equivalent Sr(1)Pr12 cuboctahedra; edges with twelve Pr(1,1)Sr4Pr8 cuboctahedra; faces with four equivalent Sr(1)Pr12 cuboctahedra; and faces with sixteen Pr(1,1)Sr4Pr8 cuboctahedra. There are a spread of Pr(1)-Pr(1,1) bond distances ranging from 3.72-4.01 Å. In the second Pr site, Pr(1) is bonded to four equivalent Sr(1) and eight Pr(1,1) atoms to form distorted PrSr4Pr8 cuboctahedra that share corners with four equivalent Sr(1)Pr12 cuboctahedra; corners with fourteen Pr(1,1)Sr4Pr8 cuboctahedra; edges with six equivalent Sr(1)Pr12 cuboctahedra; edges with twelve Pr(1,1)Sr4Pr8 cuboctahedra; faces with four equivalent Sr(1)Pr12 cuboctahedra; and faces with sixteen Pr(1,1)Sr4Pr8 cuboctahedra. Both Pr(1)-Pr(1) bond lengths are 3.74 Å.