Sr(HCOO)2 crystallizes in the orthorhombic P2_12_12_1 space group. Sr(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. There is one shorter (2.64 Å) and one longer (2.65 Å) Sr(1)-O(1) bond length. There is one shorter (2.60 Å) and one longer (2.67 Å) Sr(1)-O(2) bond length. There is one shorter (2.54 Å) and one longer (2.67 Å) Sr(1)-O(3) bond length. There is one shorter (2.51 Å) and one longer (2.72 Å) Sr(1)-O(4) bond length. There are two inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one H(1), one O(3), and one O(4) atom. The C(1)-H(1) bond length is 1.11 Å. The C(1)-O(3) bond length is 1.27 Å. The C(1)-O(4) bond length is 1.27 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one H(2), one O(1), and one O(2) atom. The C(2)-H(2) bond length is 1.11 Å. The C(2)-O(1) bond length is 1.27 Å. The C(2)-O(2) bond length is 1.27 Å. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(2) atom. There are four inequivalent O sites. In the first O site, O(4) is bonded in a distorted single-bond geometry to two equivalent Sr(1) and one C(1) atom. In the second O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Sr(1) and one C(2) atom. In the third O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Sr(1) and one C(2) atom. In the fourth O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Sr(1) and one C(1) atom. Linkers: 8 [O]C=O. Metal clusters: 4 [Sr]. The MOF has largest included sphere 1.24 A, density 2.68 g/cm3, surface area 2369.34 m2/g, accessible volume 0.04 cm3/g