Sr2As crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 5-coordinate geometry to five equivalent As(1) atoms. In the second Sr site, Sr(2) is bonded in a distorted square co-planar geometry to four equivalent As(1) atoms. As(1) is bonded in a 9-coordinate geometry to four equivalent Sr(2) and five equivalent Sr(1) atoms.
Sr2As crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 5-coordinate geometry to five equivalent As(1) atoms. There is one shorter (3.14 Å) and four longer (3.53 Å) Sr(1)-As(1) bond lengths. In the second Sr site, Sr(2) is bonded in a distorted square co-planar geometry to four equivalent As(1) atoms. All Sr(2)-As(1) bond lengths are 3.32 Å. As(1) is bonded in a 9-coordinate geometry to four equivalent Sr(2) and five equivalent Sr(1) atoms.