Nd2Ge3(C3O4)3 crystallizes in the cubic Ia-3 space group. The structure consists of a Nd2Ge3(C3O4)3 framework. There are four inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 8-coordinate geometry to one O(10), one O(13), one O(14), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. The Nd(1)-O(10) bond length is 2.52 Å. The Nd(1)-O(13) bond length is 2.37 Å. The Nd(1)-O(14) bond length is 2.73 Å. The Nd(1)-O(5) bond length is 2.45 Å. The Nd(1)-O(6) bond length is 2.40 Å. The Nd(1)-O(7) bond length is 2.39 Å. The Nd(1)-O(8) bond length is 2.37 Å. The Nd(1)-O(9) bond length is 2.40 Å. In the second Nd site, Nd(2) is bonded in a 7-coordinate geometry to one O(11), one O(14), one O(15), one O(5), one O(6), one O(7), and one O(8) atom. The Nd(2)-O(11) bond length is 2.48 Å. The Nd(2)-O(14) bond length is 2.73 Å. The Nd(2)-O(15) bond length is 2.47 Å. The Nd(2)-O(5) bond length is 2.47 Å. The Nd(2)-O(6) bond length is 2.36 Å. The Nd(2)-O(7) bond length is 2.39 Å. The Nd(2)-O(8) bond length is 2.40 Å. In the third Nd site, Nd(3) is bonded in a hexagonal planar geometry to three equivalent O(1) and three equivalent O(4) atoms. All Nd(3)-O(1) bond lengths are 2.55 Å. All Nd(3)-O(4) bond lengths are 2.59 Å. In the fourth Nd site, Nd(4) is bonded in a hexagonal planar geometry to three equivalent O(2) and three equivalent O(3) atoms. All Nd(4)-O(2) bond lengths are 2.71 Å. All Nd(4)-O(3) bond lengths are 2.56 Å. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one C(1), one O(1), one O(4), and one O(6) atom to form distorted corner-sharing GeCO3 tetrahedra. The Ge(1)-C(1) bond length is 1.94 Å. The Ge(1)-O(1) bond length is 1.80 Å. The Ge(1)-O(4) bond length is 1.82 Å. The Ge(1)-O(6) bond length is 1.74 Å. In the second Ge site, Ge(2) is bonded to one C(4), one O(1), one O(11), one O(4), and one O(5) atom to form distorted corner-sharing GeCO4 trigonal bipyramids. The Ge(2)-C(4) bond length is 1.96 Å. The Ge(2)-O(1) bond length is 1.81 Å. The Ge(2)-O(11) bond length is 2.32 Å. The Ge(2)-O(4) bond length is 1.80 Å. The Ge(2)-O(5) bond length is 1.77 Å. In the third Ge site, Ge(3) is bonded in a distorted tetrahedral geometry to one C(7), one O(2), one O(3), and one O(7) atom. The Ge(3)-C(7) bond length is 1.92 Å. The Ge(3)-O(2) bond length is 1.77 Å. The Ge(3)-O(3) bond length is 1.81 Å. The Ge(3)-O(7) bond length is 1.74 Å. In the fourth Ge site, Ge(4) is bonded in a 4-coordinate geometry to one C(10), one O(2), one O(3), and one O(8) atom. The Ge(4)-C(10) bond length is 1.91 Å. The Ge(4)-O(2) bond length is 1.81 Å. The Ge(4)-O(3) bond length is 1.79 Å. The Ge(4)-O(8) bond length is 1.72 Å. There are twelve inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one Ge(1) and one C(2) atom. The C(1)-C(2) bond length is 1.51 Å. In the second C site, C(2) is bonded in a bent 120 degrees geometry to one C(1) and one C(3) atom. The C(2)-C(3) bond length is 1.52 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(10), and one O(9) atom. The C(3)-O(10) bond length is 1.21 Å. The C(3)-O(9) bond length is 1.26 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one Ge(2) and one C(5) atom. The C(4)-C(5) bond length is 1.46 Å. In the fifth C site, C(5) is bonded in a bent 120 degrees geometry to one C(4) and one C(6) atom. The C(5)-C(6) bond length is 1.49 Å. In the sixth C site, C(6) is bonded in a bent 120 degrees geometry to one C(5), one O(11), and one O(12) atom. The C(6)-O(11) bond length is 1.31 Å. The C(6)-O(12) bond length is 1.19 Å. In the seventh C site, C(7) is bonded in a single-bond geometry to one Ge(3) and one C(8) atom. The C(7)-C(8) bond length is 1.55 Å. In the eighth C site, C(8) is bonded in a water-like geometry to one C(7) and one C(9) atom. The C(8)-C(9) bond length is 1.48 Å. In the ninth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one C(8), one O(13), and one O(14) atom. The C(9)-O(13) bond length is 1.28 Å. The C(9)-O(14) bond length is 1.27 Å. In the tenth C site, C(10) is bonded in a distorted single-bond geometry to one Ge(4) and one C(11) atom. The C(10)-C(11) bond length is 1.50 Å. In the eleventh C site, C(11) is bonded in a bent 120 degrees geometry to one C(10) and one C(12) atom. The C(11)-C(12) bond length is 1.50 Å. In the twelfth C site, C(12) is bonded in a distorted bent 120 degrees geometry to one C(11), one O(15), and one O(16) atom. The C(12)-O(15) bond length is 1.27 Å. The C(12)-O(16) bond length is 1.22 Å. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Nd(3), one Ge(1), and one Ge(2) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Nd(4), one Ge(3), and one Ge(4) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Nd(4), one Ge(3), and one Ge(4) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Nd(3), one Ge(1), and one Ge(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Nd(1), one Nd(2), and one Ge(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Nd(1), one Nd(2), and one Ge(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Nd(1), one Nd(2), and one Ge(3) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Nd(1), one Nd(2), and one Ge(4) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one Nd(1) and one C(3) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one Nd(1) and one C(3) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to one Nd(2), one Ge(2), and one C(6) atom. In the twelfth O site, O(12) is bonded in a single-bond geometry to one C(6) atom. In the thirteenth O site, O(13) is bonded in a distorted bent 150 degrees geometry to one Nd(1) and one C(9) atom. In the fourteenth O site, O(14) is bonded in a single-bond geometry to one Nd(1), one Nd(2), and one C(9) atom. In the fifteenth O site, O(15) is bonded in a distorted single-bond geometry to one Nd(2) and one C(12) atom. In the sixteenth O site, O(16) is bonded in a single-bond geometry to one C(12) atom. Linkers: 31 [O][Ge]1O[Ge]([O])O[Ge]([O])O[Ge]([O])O[Ge]([O])O[Ge]([O])O1. Metal clusters: 128 [Nd]. The MOF has largest included sphere 4.84 A, density 2.15 g/cm3, surface area 1723.39 m2/g, accessible volume 0.24 cm3/g