Sr4GeN4 crystallizes in the orthorhombic Pnna space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 4-coordinate geometry to one N(2) and three equivalent N(1) atoms. In the second Sr site, Sr(2) is bonded in a 4-coordinate geometry to four equivalent N(2) atoms. In the third Sr site, Sr(3) is bonded in a 4-coordinate geometry to two equivalent N(1) and two equivalent N(2) atoms. Ge(1) is bonded in a tetrahedral geometry to two equivalent N(1) and two equivalent N(2) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded to one Sr(3), three equivalent Sr(1), and one Ge(1) atom to form a mixture of distorted corner and edge-sharing NSr4Ge trigonal bipyramids. In the second N site, N(2) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(3), two equivalent Sr(2), and one Ge(1) atom.
Sr4GeN4 crystallizes in the orthorhombic Pnna space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 4-coordinate geometry to one N(2) and three equivalent N(1) atoms. The Sr(1)-N(2) bond length is 2.84 Å. There are a spread of Sr(1)-N(1) bond distances ranging from 2.54-2.64 Å. In the second Sr site, Sr(2) is bonded in a 4-coordinate geometry to four equivalent N(2) atoms. There are two shorter (2.61 Å) and two longer (2.68 Å) Sr(2)-N(2) bond lengths. In the third Sr site, Sr(3) is bonded in a 4-coordinate geometry to two equivalent N(1) and two equivalent N(2) atoms. Both Sr(3)-N(1) bond lengths are 2.49 Å. Both Sr(3)-N(2) bond lengths are 2.51 Å. Ge(1) is bonded in a tetrahedral geometry to two equivalent N(1) and two equivalent N(2) atoms. Both Ge(1)-N(1) bond lengths are 1.97 Å. Both Ge(1)-N(2) bond lengths are 1.93 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded to one Sr(3), three equivalent Sr(1), and one Ge(1) atom to form a mixture of distorted corner and edge-sharing NSr4Ge trigonal bipyramids. In the second N site, N(2) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(3), two equivalent Sr(2), and one Ge(1) atom.