HgC18H14I2(N2O)2 is Indium-like structured and crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two HgC18H14I2(N2O)2 clusters. Hg(1) is bonded in a distorted trigonal pyramidal geometry to one N(1), one N(2), one I(1), and one I(2) atom. The Hg(1)-N(1) bond length is 2.52 Å. The Hg(1)-N(2) bond length is 2.52 Å. The Hg(1)-I(1) bond length is 2.70 Å. The Hg(1)-I(2) bond length is 2.70 Å. There are thirteen inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(3,4); one N(1); and one H(1,2) atom. The C(1)-C(3,4) bond length is 1.40 Å. The C(1)-N(1) bond length is 1.34 Å. The C(1)-H(1,2) bond length is 1.09 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(3,4); one N(2); and one H(1,2) atom. The C(2)-C(3,4) bond length is 1.40 Å. The C(2)-N(2) bond length is 1.34 Å. The C(2)-H(1,2) bond length is 1.09 Å. In the third C site, C(3,4) is bonded in a distorted single-bond geometry to one C(1) and one H(3) atom. The C(3,4)-H(3) bond length is 1.09 Å. In the fourth C site, C(5,6) is bonded in a distorted single-bond geometry to one C(7,8) and one H(5,6) atom. The C(5,6)-C(7,8) bond length is 1.40 Å. The C(5,6)-H(5,6) bond length is 1.09 Å. In the fifth C site, C(7,8) is bonded in a trigonal planar geometry to one C(11,12); one C(5,6); and one C(9) atom. The C(7,8)-C(11,12) bond length is 1.49 Å. The C(7,8)-C(9) bond length is 1.40 Å. In the sixth C site, C(9) is bonded in a distorted trigonal planar geometry to one C(7,8); one N(1); and one H(7,8) atom. The C(9)-N(1) bond length is 1.34 Å. The C(9)-H(7,8) bond length is 1.09 Å. In the seventh C site, C(10) is bonded in a distorted trigonal planar geometry to one C(7,8); one N(2); and one H(7,8) atom. The C(10)-C(7,8) bond length is 1.40 Å. The C(10)-N(2) bond length is 1.34 Å. The C(10)-H(7,8) bond length is 1.09 Å. In the eighth C site, C(11,12) is bonded in a distorted bent 120 degrees geometry to one C(7,8); one N(3); and one O(1,2) atom. The C(11,12)-N(3) bond length is 1.36 Å. The C(11,12)-O(1,2) bond length is 1.25 Å. In the ninth C site, C(13) is bonded in a distorted single-bond geometry to one C(15,16) and one H(9,10) atom. The C(13)-C(15,16) bond length is 1.40 Å. The C(13)-H(9,10) bond length is 1.09 Å. In the tenth C site, C(14) is bonded in a distorted single-bond geometry to one C(15,16) and one H(9,10) atom. The C(14)-C(15,16) bond length is 1.40 Å. The C(14)-H(9,10) bond length is 1.09 Å. In the eleventh C site, C(15,16) is bonded in a distorted trigonal planar geometry to one C(13), one C(17), and one N(3) atom. The C(15,16)-C(17) bond length is 1.40 Å. The C(15,16)-N(3) bond length is 1.41 Å. In the twelfth C site, C(17) is bonded in a distorted single-bond geometry to one C(15,16) and one H(11,12) atom. The C(17)-H(11,12) bond length is 1.09 Å. In the thirteenth C site, C(18) is bonded in a distorted single-bond geometry to one C(15,16) and one H(11,12) atom. The C(18)-C(15,16) bond length is 1.40 Å. The C(18)-H(11,12) bond length is 1.09 Å. There are four inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Hg(1), one C(1), and one C(9) atom. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one Hg(1), one C(10), and one C(2) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one C(11,12); one C(15,16); and one H(13,14) atom. The N(3)-H(13,14) bond length is 1.03 Å. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one C(11,12); one C(15,16); and one H(13,14) atom. The N(4)-C(11,12) bond length is 1.36 Å. The N(4)-C(15,16) bond length is 1.41 Å. The N(4)-H(13,14) bond length is 1.03 Å. There are eight inequivalent H sites. In the first H site, H(1,2) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(3) is bonded in a single-bond geometry to one C(3,4) atom. In the third H site, H(4) is bonded in a single-bond geometry to one C(3,4) atom. The H(4)-C(3,4) bond length is 1.09 Å. In the fourth H site, H(5,6) is bonded in a single-bond geometry to one C(5,6) atom. In the fifth H site, H(7,8) is bonded in a single-bond geometry to one C(9) atom. In the sixth H site, H(9,10) is bonded in a single-bond geometry to one C(13) atom. In the seventh H site, H(11,12) is bonded in a single-bond geometry to one C(17) atom. In the eighth H site, H(13,14) is bonded in a single-bond geometry to one N(3) atom. O(1,2) is bonded in a single-bond geometry to one C(11,12) atom. There are two inequivalent I sites. In the first I site, I(1) is bonded in a single-bond geometry to one Hg(1) atom. In the second I site, I(2) is bonded in a single-bond geometry to one Hg(1) atom. Linkers: 1 O=C(Nc1ccc(NC(=O)c2cccnc2)cc1)c1cccnc1 ,2 [C]Nc1ccc(NC(=O)c2cccnc2)cc1 ,2 [CH]/N=C\[C][C]Nc1ccc(NC(=O)c2cccnc2)cc1 ,2 O=[C]Nc1ccc(NC(=O)c2cccnc2)cc1. Metal clusters: . The MOF has largest included sphere 1.89 A, density 2.60 g/cm3, surface area 2923.18 m2/g, accessible volume 0.12 cm3/g