Sr2PtAu crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to three equivalent Pt(1) and four equivalent Au(1) atoms. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to four equivalent Pt(1) and three equivalent Au(1) atoms. Pt(1) is bonded in a 9-coordinate geometry to three equivalent Sr(1), four equivalent Sr(2), and two equivalent Au(1) atoms. Au(1) is bonded in a 9-coordinate geometry to three equivalent Sr(2), four equivalent Sr(1), and two equivalent Pt(1) atoms.
Sr2PtAu crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to three equivalent Pt(1) and four equivalent Au(1) atoms. There is one shorter (3.23 Å) and two longer (3.24 Å) Sr(1)-Pt(1) bond lengths. All Sr(1)-Au(1) bond lengths are 3.23 Å. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to four equivalent Pt(1) and three equivalent Au(1) atoms. All Sr(2)-Pt(1) bond lengths are 3.23 Å. There are two shorter (3.22 Å) and one longer (3.25 Å) Sr(2)-Au(1) bond length. Pt(1) is bonded in a 9-coordinate geometry to three equivalent Sr(1), four equivalent Sr(2), and two equivalent Au(1) atoms. Both Pt(1)-Au(1) bond lengths are 2.86 Å. Au(1) is bonded in a 9-coordinate geometry to three equivalent Sr(2), four equivalent Sr(1), and two equivalent Pt(1) atoms.