Sr7N6Te crystallizes in the orthorhombic Ibam space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form edge-sharing SrN4 trigonal pyramids. In the second Sr site, Sr(2) is bonded in a 5-coordinate geometry to two equivalent N(2) and three equivalent N(1) atoms. In the third Sr site, Sr(3) is bonded in a 4-coordinate geometry to four equivalent N(1) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded to one Sr(1), one Sr(3), three equivalent Sr(2), and one Te(1) atom to form a mixture of corner, face, and edge-sharing NSr5Te octahedra. The corner-sharing octahedral tilt angles range from 38-67°. In the second N site, N(2) is bonded in a 6-coordinate geometry to two equivalent Sr(1) and four equivalent Sr(2) atoms. Te(1) is bonded in a 4-coordinate geometry to four equivalent N(1) atoms.
Sr7N6Te crystallizes in the orthorhombic Ibam space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form edge-sharing SrN4 trigonal pyramids. Both Sr(1)-N(1) bond lengths are 2.70 Å. There is one shorter (2.60 Å) and one longer (2.61 Å) Sr(1)-N(2) bond length. In the second Sr site, Sr(2) is bonded in a 5-coordinate geometry to two equivalent N(2) and three equivalent N(1) atoms. There is one shorter (2.61 Å) and one longer (3.00 Å) Sr(2)-N(2) bond length. There are a spread of Sr(2)-N(1) bond distances ranging from 2.52-2.83 Å. In the third Sr site, Sr(3) is bonded in a 4-coordinate geometry to four equivalent N(1) atoms. All Sr(3)-N(1) bond lengths are 2.66 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded to one Sr(1), one Sr(3), three equivalent Sr(2), and one Te(1) atom to form a mixture of corner, face, and edge-sharing NSr5Te octahedra. The corner-sharing octahedral tilt angles range from 38-67°. The N(1)-Te(1) bond length is 2.21 Å. In the second N site, N(2) is bonded in a 6-coordinate geometry to two equivalent Sr(1) and four equivalent Sr(2) atoms. Te(1) is bonded in a 4-coordinate geometry to four equivalent N(1) atoms.