SrSi2 is hexagonal omega structure-like structured and crystallizes in the tetragonal I4_1/amd space group. Sr(1) is bonded to twelve Si(1,1) atoms to form a mixture of face and edge-sharing SrSi12 cuboctahedra. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Sr(1) and three equivalent Si(1) atoms. In the second Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Sr(1) and three Si(1,1) atoms. In the third Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Sr(1) and three Si(1,1) atoms. In the fourth Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Sr(1) and three Si(1,1) atoms.
SrSi2 is hexagonal omega structure-like structured and crystallizes in the tetragonal I4_1/amd space group. Sr(1) is bonded to twelve Si(1,1) atoms to form a mixture of face and edge-sharing SrSi12 cuboctahedra. There are four shorter (3.20 Å) and eight longer (3.34 Å) Sr(1)-Si(1,1) bond lengths. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Sr(1) and three equivalent Si(1) atoms. There is one shorter (2.32 Å) and two longer (2.50 Å) Si(1)-Si(1) bond lengths. In the second Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Sr(1) and three Si(1,1) atoms. There is one shorter (2.32 Å) and two longer (2.50 Å) Si(1)-Si(1,1) bond lengths. In the third Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Sr(1) and three Si(1,1) atoms. There are two shorter (3.20 Å) and four longer (3.34 Å) Si(1)-Sr(1) bond lengths. Both Si(1)-Si(1) bond lengths are 2.50 Å. In the fourth Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent Sr(1) and three Si(1,1) atoms. There are two shorter (3.20 Å) and four longer (3.34 Å) Si(1)-Sr(1) bond lengths. There is one shorter (2.32 Å) and two longer (2.50 Å) Si(1)-Si(1,1) bond lengths.