Sr5(SnN3)2 crystallizes in the monoclinic C2/c space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 6-coordinate geometry to two equivalent N(1), two equivalent N(2), and two equivalent N(3) atoms. In the second Sr site, Sr(2) is bonded in a 5-coordinate geometry to one N(3), two equivalent N(1), and two equivalent N(2) atoms. In the third Sr site, Sr(3) is bonded in a 6-coordinate geometry to two equivalent N(1), two equivalent N(2), and two equivalent N(3) atoms. Sn(1) is bonded to one N(1), one N(2), and two equivalent N(3) atoms to form edge-sharing SnN4 tetrahedra. There are three inequivalent N sites. In the first N site, N(2) is bonded to one Sr(3), two equivalent Sr(1), two equivalent Sr(2), and one Sn(1) atom to form a mixture of distorted corner and edge-sharing NSr5Sn octahedra. The corner-sharing octahedral tilt angles range from 22-61°. In the second N site, N(3) is bonded in a 6-coordinate geometry to one Sr(2), one Sr(3), two equivalent Sr(1), and two equivalent Sn(1) atoms. In the third N site, N(1) is bonded to one Sr(3), two equivalent Sr(1), two equivalent Sr(2), and one Sn(1) atom to form a mixture of distorted face, corner, and edge-sharing NSr5Sn octahedra. The corner-sharing octahedral tilt angles range from 22-61°.
Sr5(SnN3)2 crystallizes in the monoclinic C2/c space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 6-coordinate geometry to two equivalent N(1), two equivalent N(2), and two equivalent N(3) atoms. There is one shorter (2.58 Å) and one longer (2.79 Å) Sr(1)-N(1) bond length. There is one shorter (2.85 Å) and one longer (3.03 Å) Sr(1)-N(2) bond length. There is one shorter (2.99 Å) and one longer (3.16 Å) Sr(1)-N(3) bond length. In the second Sr site, Sr(2) is bonded in a 5-coordinate geometry to one N(3), two equivalent N(1), and two equivalent N(2) atoms. The Sr(2)-N(3) bond length is 2.75 Å. There is one shorter (2.46 Å) and one longer (2.85 Å) Sr(2)-N(1) bond length. There is one shorter (2.65 Å) and one longer (2.73 Å) Sr(2)-N(2) bond length. In the third Sr site, Sr(3) is bonded in a 6-coordinate geometry to two equivalent N(1), two equivalent N(2), and two equivalent N(3) atoms. Both Sr(3)-N(1) bond lengths are 3.02 Å. Both Sr(3)-N(2) bond lengths are 2.49 Å. Both Sr(3)-N(3) bond lengths are 2.95 Å. Sn(1) is bonded to one N(1), one N(2), and two equivalent N(3) atoms to form edge-sharing SnN4 tetrahedra. The Sn(1)-N(1) bond length is 2.05 Å. The Sn(1)-N(2) bond length is 2.07 Å. There is one shorter (2.14 Å) and one longer (2.21 Å) Sn(1)-N(3) bond length. There are three inequivalent N sites. In the first N site, N(2) is bonded to one Sr(3), two equivalent Sr(1), two equivalent Sr(2), and one Sn(1) atom to form a mixture of distorted corner and edge-sharing NSr5Sn octahedra. The corner-sharing octahedral tilt angles range from 22-61°. In the second N site, N(3) is bonded in a 6-coordinate geometry to one Sr(2), one Sr(3), two equivalent Sr(1), and two equivalent Sn(1) atoms. In the third N site, N(1) is bonded to one Sr(3), two equivalent Sr(1), two equivalent Sr(2), and one Sn(1) atom to form a mixture of distorted face, corner, and edge-sharing NSr5Sn octahedra. The corner-sharing octahedral tilt angles range from 22-61°.