Zn3C18P3N7H18O9 crystallizes in the triclinic P-1 space group. There are three inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one N(1), one O(2), one O(7), and one O(8) atom to form ZnNO3 tetrahedra that share  a cornercorner with one P(1)CO3 tetrahedra and corners with two equivalent P(3)CO3 tetrahedra. The Zn(1)-N(1) bond length is 2.04 Å. The Zn(1)-O(2) bond length is 1.93 Å. The Zn(1)-O(7) bond length is 1.95 Å. The Zn(1)-O(8) bond length is 1.95 Å. In the second Zn site, Zn(2) is bonded to one N(2), one N(7), one O(3), one O(6), and one O(9) atom to form ZnN2O3 trigonal bipyramids that share  a cornercorner with one C(1)PH2N tetrahedra,  a cornercorner with one C(2)PH2N tetrahedra,  a cornercorner with one C(3)PH2N tetrahedra,  a cornercorner with one P(1)CO3 tetrahedra,  a cornercorner with one P(2)CO3 tetrahedra, and  a cornercorner with one P(3)CO3 tetrahedra. The Zn(2)-N(2) bond length is 2.11 Å. The Zn(2)-N(7) bond length is 2.32 Å. The Zn(2)-O(3) bond length is 2.02 Å. The Zn(2)-O(6) bond length is 2.02 Å. The Zn(2)-O(9) bond length is 1.99 Å. In the third Zn site, Zn(3) is bonded to one N(3), one O(1), one O(4), and one O(5) atom to form ZnNO3 tetrahedra that share  a cornercorner with one P(1)CO3 tetrahedra and corners with two equivalent P(2)CO3 tetrahedra. The Zn(3)-N(3) bond length is 2.05 Å. The Zn(3)-O(1) bond length is 1.94 Å. The Zn(3)-O(4) bond length is 1.94 Å. The Zn(3)-O(5) bond length is 1.96 Å. There are eighteen inequivalent C sites. In the first C site, C(1) is bonded to one P(1), one N(7), one H(1), and one H(2) atom to form distorted CPH2N tetrahedra that share  a cornercorner with one C(2)PH2N tetrahedra,  a cornercorner with one C(3)PH2N tetrahedra, and  a cornercorner with one Zn(2)N2O3 trigonal bipyramid. The C(1)-P(1) bond length is 1.84 Å. The C(1)-N(7) bond length is 1.47 Å. The C(1)-H(1) bond length is 1.11 Å. The C(1)-H(2) bond length is 1.10 Å. In the second C site, C(2) is bonded to one P(3), one N(7), one H(3), and one H(4) atom to form distorted CPH2N tetrahedra that share  a cornercorner with one C(1)PH2N tetrahedra,  a cornercorner with one C(3)PH2N tetrahedra, and  a cornercorner with one Zn(2)N2O3 trigonal bipyramid. The C(2)-P(3) bond length is 1.84 Å. The C(2)-N(7) bond length is 1.47 Å. The C(2)-H(3) bond length is 1.11 Å. The C(2)-H(4) bond length is 1.10 Å. In the third C site, C(3) is bonded to one P(2), one N(7), one H(5), and one H(6) atom to form distorted CPH2N tetrahedra that share  a cornercorner with one C(1)PH2N tetrahedra,  a cornercorner with one C(2)PH2N tetrahedra, and  a cornercorner with one Zn(2)N2O3 trigonal bipyramid. The C(3)-P(2) bond length is 1.83 Å. The C(3)-N(7) bond length is 1.47 Å. The C(3)-H(5) bond length is 1.11 Å. The C(3)-H(6) bond length is 1.10 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one C(5), one N(1), and one H(7) atom. The C(4)-C(5) bond length is 1.37 Å. The C(4)-N(1) bond length is 1.38 Å. The C(4)-H(7) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one C(4), one N(4), and one H(8) atom. The C(5)-N(4) bond length is 1.40 Å. The C(5)-H(8) bond length is 1.08 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one N(1), one N(4), and one H(9) atom. The C(6)-N(1) bond length is 1.32 Å. The C(6)-N(4) bond length is 1.37 Å. The C(6)-H(9) bond length is 1.09 Å. In the seventh C site, C(7) is bonded in a 3-coordinate geometry to one C(8), one N(2), and one H(10) atom. The C(7)-C(8) bond length is 1.37 Å. The C(7)-N(2) bond length is 1.38 Å. The C(7)-H(10) bond length is 1.08 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(7), one N(5), and one H(11) atom. The C(8)-N(5) bond length is 1.39 Å. The C(8)-H(11) bond length is 1.08 Å. In the ninth C site, C(9) is bonded in a trigonal planar geometry to one N(2), one N(5), and one H(12) atom. The C(9)-N(2) bond length is 1.32 Å. The C(9)-N(5) bond length is 1.37 Å. The C(9)-H(12) bond length is 1.08 Å. In the tenth C site, C(10) is bonded in a distorted bent 120 degrees geometry to one N(3) and one H(13) atom. The C(10)-N(3) bond length is 1.38 Å. The C(10)-H(13) bond length is 1.09 Å. In the eleventh C site, C(11) is bonded in a distorted bent 120 degrees geometry to one N(6) and one H(14) atom. The C(11)-N(6) bond length is 1.39 Å. The C(11)-H(14) bond length is 1.08 Å. In the twelfth C site, C(12) is bonded in a trigonal planar geometry to one N(3), one N(6), and one H(15) atom. The C(12)-N(3) bond length is 1.32 Å. The C(12)-N(6) bond length is 1.37 Å. The C(12)-H(15) bond length is 1.09 Å. In the thirteenth C site, C(13) is bonded in a distorted trigonal planar geometry to one C(14), one C(18), and one N(5) atom. The C(13)-C(14) bond length is 1.40 Å. The C(13)-C(18) bond length is 1.40 Å. The C(13)-N(5) bond length is 1.42 Å. In the fourteenth C site, C(14) is bonded in a distorted single-bond geometry to one C(13), one C(15), and one H(16) atom. The C(14)-C(15) bond length is 1.39 Å. The C(14)-H(16) bond length is 1.09 Å. In the fifteenth C site, C(15) is bonded in a distorted trigonal planar geometry to one C(14), one C(16), and one N(6) atom. The C(15)-C(16) bond length is 1.40 Å. The C(15)-N(6) bond length is 1.41 Å. In the sixteenth C site, C(16) is bonded in a distorted single-bond geometry to one C(15), one C(17), and one H(17) atom. The C(16)-C(17) bond length is 1.40 Å. The C(16)-H(17) bond length is 1.09 Å. In the seventeenth C site, C(17) is bonded in a distorted trigonal planar geometry to one C(16), one C(18), and one N(4) atom. The C(17)-C(18) bond length is 1.40 Å. The C(17)-N(4) bond length is 1.41 Å. In the eighteenth C site, C(18) is bonded in a distorted single-bond geometry to one C(13), one C(17), and one H(18) atom. The C(18)-H(18) bond length is 1.09 Å. There are three inequivalent P sites. In the first P site, P(1) is bonded to one C(1), one O(1), one O(2), and one O(3) atom to form PCO3 tetrahedra that share  a cornercorner with one Zn(1)NO3 tetrahedra,  a cornercorner with one Zn(3)NO3 tetrahedra,  a cornercorner with one N(7)ZnC3 tetrahedra, and  a cornercorner with one Zn(2)N2O3 trigonal bipyramid. The P(1)-O(1) bond length is 1.54 Å. The P(1)-O(2) bond length is 1.55 Å. The P(1)-O(3) bond length is 1.54 Å. In the second P site, P(2) is bonded to one C(3), one O(4), one O(5), and one O(6) atom to form PCO3 tetrahedra that share  a cornercorner with one N(7)ZnC3 tetrahedra, corners with two equivalent Zn(3)NO3 tetrahedra, and  a cornercorner with one Zn(2)N2O3 trigonal bipyramid. The P(2)-O(4) bond length is 1.53 Å. The P(2)-O(5) bond length is 1.55 Å. The P(2)-O(6) bond length is 1.54 Å. In the third P site, P(3) is bonded to one C(2), one O(7), one O(8), and one O(9) atom to form PCO3 tetrahedra that share  a cornercorner with one N(7)ZnC3 tetrahedra, corners with two equivalent Zn(1)NO3 tetrahedra, and  a cornercorner with one Zn(2)N2O3 trigonal bipyramid. The P(3)-O(7) bond length is 1.53 Å. The P(3)-O(8) bond length is 1.55 Å. The P(3)-O(9) bond length is 1.54 Å. There are seven inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Zn(1), one C(4), and one C(6) atom. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one Zn(2), one C(7), and one C(9) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one Zn(3), one C(10), and one C(12) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one C(17), one C(5), and one C(6) atom. In the fifth N site, N(5) is bonded in a trigonal planar geometry to one C(13), one C(8), and one C(9) atom. In the sixth N site, N(6) is bonded in a trigonal planar geometry to one C(11), one C(12), and one C(15) atom. In the seventh N site, N(7) is bonded to one Zn(2), one C(1), one C(2), and one C(3) atom to form NZnC3 tetrahedra that share  a cornercorner with one P(1)CO3 tetrahedra,  a cornercorner with one P(2)CO3 tetrahedra, and  a cornercorner with one P(3)CO3 tetrahedra. There are eighteen 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(1) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(2) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(2) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(3) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(3) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(4) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(5) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(6) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(7) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(8) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(9) atom. In the thirteenth H site, H(13) is bonded in a single-bond geometry to one C(10) atom. In the fourteenth H site, H(14) is bonded in a single-bond geometry to one C(11) atom. In the fifteenth H site, H(15) is bonded in a single-bond geometry to one C(12) atom. In the sixteenth H site, H(16) is bonded in a single-bond geometry to one C(14) atom. In the seventeenth H site, H(17) is bonded in a single-bond geometry to one C(16) atom. In the eighteenth H site, H(18) is bonded in a single-bond geometry to one C(18) atom. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Zn(3) and one P(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Zn(1) and one P(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Zn(2) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Zn(3) and one P(2) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Zn(3) and one P(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Zn(2) and one P(2) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Zn(1) and one P(3) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Zn(1) and one P(3) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Zn(2) and one P(3) atom. Linkers: 2 c1cn(-c2cc(-n3ccnc3)cc(-n3ccnc3)c2)cn1. Metal clusters: 6 [Zn]. The MOF has largest included sphere 5.03 A, density 1.44 g/cm3, surface area 3533.18 m2/g, accessible volume 0.27 cm3/g