Sr2MnN2 crystallizes in the orthorhombic Cmce space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to two equivalent N(2) and three equivalent N(1) atoms to form a mixture of distorted corner and edge-sharing SrN5 trigonal bipyramids. In the second Sr site, Sr(2) is bonded in a 5-coordinate geometry to two equivalent N(1) and three equivalent N(2) atoms. Mn(1) is bonded in a bent 120 degrees geometry to one N(1) and one N(2) atom. There are two inequivalent N sites. In the first N site, N(1) is bonded to two equivalent Sr(2), three equivalent Sr(1), and one Mn(1) atom to form a mixture of distorted corner and edge-sharing NSr5Mn octahedra. The corner-sharing octahedral tilt angles are 14°. In the second N site, N(2) is bonded in a 6-coordinate geometry to two equivalent Sr(1), three equivalent Sr(2), and one Mn(1) atom.
Sr2MnN2 crystallizes in the orthorhombic Cmce space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to two equivalent N(2) and three equivalent N(1) atoms to form a mixture of distorted corner and edge-sharing SrN5 trigonal bipyramids. There is one shorter (2.58 Å) and one longer (2.77 Å) Sr(1)-N(2) bond length. There are two shorter (2.74 Å) and one longer (2.79 Å) Sr(1)-N(1) bond length. In the second Sr site, Sr(2) is bonded in a 5-coordinate geometry to two equivalent N(1) and three equivalent N(2) atoms. There is one shorter (2.64 Å) and one longer (2.69 Å) Sr(2)-N(1) bond length. There are two shorter (2.73 Å) and one longer (2.90 Å) Sr(2)-N(2) bond length. Mn(1) is bonded in a bent 120 degrees geometry to one N(1) and one N(2) atom. The Mn(1)-N(1) bond length is 1.78 Å. The Mn(1)-N(2) bond length is 1.76 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded to two equivalent Sr(2), three equivalent Sr(1), and one Mn(1) atom to form a mixture of distorted corner and edge-sharing NSr5Mn octahedra. The corner-sharing octahedral tilt angles are 14°. In the second N site, N(2) is bonded in a 6-coordinate geometry to two equivalent Sr(1), three equivalent Sr(2), and one Mn(1) atom.