Sr7Ag3 crystallizes in the hexagonal P6_3mc space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 3-coordinate geometry to three equivalent Ag(1) atoms. In the second Sr site, Sr(3) is bonded in a distorted L-shaped geometry to two equivalent Ag(1) atoms. In the third Sr site, Sr(2) is bonded in a distorted T-shaped geometry to three equivalent Ag(1) atoms. Ag(1) is bonded in a 6-coordinate geometry to one Sr(1), two equivalent Sr(3), and three equivalent Sr(2) atoms.
Sr7Ag3 crystallizes in the hexagonal P6_3mc space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 3-coordinate geometry to three equivalent Ag(1) atoms. All Sr(1)-Ag(1) bond lengths are 3.26 Å. In the second Sr site, Sr(3) is bonded in a distorted L-shaped geometry to two equivalent Ag(1) atoms. Both Sr(3)-Ag(1) bond lengths are 3.32 Å. In the third Sr site, Sr(2) is bonded in a distorted T-shaped geometry to three equivalent Ag(1) atoms. There is one shorter (3.31 Å) and two longer (3.32 Å) Sr(2)-Ag(1) bond lengths. Ag(1) is bonded in a 6-coordinate geometry to one Sr(1), two equivalent Sr(3), and three equivalent Sr(2) atoms.