Na2ZnC26H10(NO4)2 crystallizes in the tetragonal I4_1/amd space group. Na(1) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. Both Na(1)-O(2) bond lengths are 2.45 Å. There are two shorter (2.30 Å) and two longer (2.38 Å) Na(1)-O(1) bond lengths. Zn(1) is bonded in a single-bond geometry to one Zn(1) and four equivalent N(1) atoms. The Zn(1)-Zn(1) bond length is 0.74 Å. There are two shorter (2.06 Å) and two longer (2.08 Å) Zn(1)-N(1) bond lengths. There are eight inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(3) and two equivalent C(5) atoms. The C(1)-C(3) bond length is 1.50 Å. Both C(1)-C(5) bond lengths are 1.37 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(3), one C(7), and one N(1) atom. The C(2)-C(3) bond length is 1.40 Å. The C(2)-C(7) bond length is 1.45 Å. The C(2)-N(1) bond length is 1.37 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(1) and two equivalent C(2) atoms. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to two equivalent C(6) and one H(1) atom. Both C(4)-C(6) bond lengths are 1.38 Å. The C(4)-H(1) bond length is 0.95 Å. In the fifth C site, C(5) is bonded in a distorted single-bond geometry to one C(1), one C(6), and one H(2) atom. The C(5)-C(6) bond length is 1.40 Å. The C(5)-H(2) bond length is 0.95 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(4), one C(5), and one C(8) atom. The C(6)-C(8) bond length is 1.50 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(2) and one H(3) atom. The C(7)-H(3) bond length is 0.95 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(1), and one O(2) atom. The C(8)-O(1) bond length is 1.25 Å. The C(8)-O(2) bond length is 1.24 Å. N(1) is bonded in a 4-coordinate geometry to two equivalent Zn(1) and two equivalent C(2) atoms. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(4) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(5) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(7) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a T-shaped geometry to two equivalent Na(1) and one C(8) atom. In the second O site, O(2) is bonded in an L-shaped geometry to one Na(1) and one C(8) atom. Linkers: 4 [O]C(=O)c1cc(C([O])=O)cc(/C2=C3\C=C/C(=C(\c4cc(C([O])=O)cc(C([O])=O)c4)C4=N/C(=C(/c5cc(C([O])=O)cc(C([O])=O)c5)C5=CC=C([N]5)/C(c5cc(C([O])=O)cc(C([O])=O)c5)=C5/C=CC2=N5)C=C4)[N]3)c1. Metal clusters: 16 [Na] ,4 [Zn] ,2 [N][Zn]([N])[Zn]([N])[N]. The MOF has largest included sphere 9.36 A, density 0.75 g/cm3, surface area 3685.17 m2/g, accessible volume 0.82 cm3/g