SrC2(N2O)2 crystallizes in the tetragonal P4/n space group. Sr(1) is bonded in a 6-coordinate geometry to one N(1), one N(2), one N(3), one O(2), and two equivalent O(1) atoms. The Sr(1)-N(1) bond length is 2.69 Å. The Sr(1)-N(2) bond length is 2.67 Å. The Sr(1)-N(3) bond length is 2.71 Å. The Sr(1)-O(2) bond length is 2.63 Å. There is one shorter (2.59 Å) and one longer (2.63 Å) Sr(1)-O(1) bond length. There are two inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(1)-O(1) bond length is 1.26 Å. The C(1)-O(2) bond length is 1.25 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one N(1) and one N(2) atom. The C(2)-N(1) bond length is 1.33 Å. The C(2)-N(2) bond length is 1.32 Å. There are four inequivalent N sites. In the first N site, N(1) is bonded in a 3-coordinate geometry to one Sr(1), one C(2), and one N(3) atom. The N(1)-N(3) bond length is 1.34 Å. In the second N site, N(2) is bonded in a 3-coordinate geometry to one Sr(1), one C(2), and one N(4) atom. The N(2)-N(4) bond length is 1.34 Å. In the third N site, N(3) is bonded in a distorted trigonal planar geometry to one Sr(1), one N(1), and one N(4) atom. The N(3)-N(4) bond length is 1.31 Å. In the fourth N site, N(4) is bonded in a water-like geometry to one N(2) and one N(3) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Sr(1) and one C(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Sr(1) and one C(1) atom. Linkers: 8 [O]C(=O)C1=NN=N[N]1. Metal clusters: 8 [Sr]. The MOF has largest included sphere 5.28 A, density 1.78 g/cm3, surface area 3004.14 m2/g, accessible volume 0.26 cm3/g