NaB2C16H15O13 crystallizes in the triclinic P-1 space group. Na(1) is bonded to one O(2), one O(7), two equivalent O(12), and two equivalent O(13) atoms to form distorted NaO6 octahedra that share  a cornercorner with one B(1)CO3 tetrahedra,  a cornercorner with one B(2)CO3 tetrahedra, and edges with two equivalent Na(1)O6 octahedra. The Na(1)-O(2) bond length is 2.61 Å. The Na(1)-O(7) bond length is 2.59 Å. There is one shorter (2.41 Å) and one longer (2.43 Å) Na(1)-O(12) bond length. There is one shorter (2.34 Å) and one longer (2.43 Å) Na(1)-O(13) bond length. There are two inequivalent B sites. In the first B site, B(1) is bonded to one C(1), one O(1), one O(2), and one O(3) atom to form BCO3 tetrahedra that share  a cornercorner with one Na(1)O6 octahedra and  a cornercorner with one B(2)CO3 tetrahedra. The corner-sharing octahedral tilt angles are 51°. The B(1)-C(1) bond length is 1.60 Å. The B(1)-O(1) bond length is 1.56 Å. The B(1)-O(2) bond length is 1.52 Å. The B(1)-O(3) bond length is 1.45 Å. In the second B site, B(2) is bonded to one C(9), one O(1), one O(7), and one O(8) atom to form distorted BCO3 tetrahedra that share  a cornercorner with one Na(1)O6 octahedra and  a cornercorner with one B(1)CO3 tetrahedra. The corner-sharing octahedral tilt angles are 56°. The B(2)-C(9) bond length is 1.60 Å. The B(2)-O(1) bond length is 1.56 Å. The B(2)-O(7) bond length is 1.54 Å. The B(2)-O(8) bond length is 1.43 Å. There are sixteen inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one B(1), one C(2), and one C(6) atom. The C(1)-C(2) bond length is 1.39 Å. The C(1)-C(6) bond length is 1.40 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(1), one C(3), and one H(2) atom. The C(2)-C(3) bond length is 1.41 Å. The C(2)-H(2) bond length is 1.09 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(2), one C(4), and one C(8) atom. The C(3)-C(4) bond length is 1.41 Å. The C(3)-C(8) bond length is 1.48 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(3) and one H(4) atom. The C(4)-H(4) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a distorted single-bond geometry to one C(6) and one H(6) atom. The C(5)-C(6) bond length is 1.39 Å. The C(5)-H(6) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(1), one C(5), and one C(7) atom. The C(6)-C(7) bond length is 1.48 Å. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(2), and one O(4) atom. The C(7)-O(2) bond length is 1.35 Å. The C(7)-O(4) bond length is 1.23 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(5), and one O(6) atom. The C(8)-O(5) bond length is 1.32 Å. The C(8)-O(6) bond length is 1.25 Å. In the ninth C site, C(9) is bonded in a distorted trigonal planar geometry to one B(2), one C(10), and one C(14) atom. The C(9)-C(10) bond length is 1.39 Å. The C(9)-C(14) bond length is 1.40 Å. In the tenth C site, C(10) is bonded in a distorted single-bond geometry to one C(11), one C(9), and one H(8) atom. The C(10)-C(11) bond length is 1.41 Å. The C(10)-H(8) bond length is 1.09 Å. In the eleventh C site, C(11) is bonded in a trigonal planar geometry to one C(10), one C(12), and one C(16) atom. The C(11)-C(12) bond length is 1.41 Å. The C(11)-C(16) bond length is 1.48 Å. In the twelfth C site, C(12) is bonded in a distorted single-bond geometry to one C(11) and one H(12) atom. The C(12)-H(12) bond length is 1.09 Å. In the thirteenth C site, C(13) is bonded in a distorted single-bond geometry to one C(14) and one H(15) atom. The C(13)-C(14) bond length is 1.39 Å. The C(13)-H(15) bond length is 1.09 Å. In the fourteenth C site, C(14) is bonded in a trigonal planar geometry to one C(13), one C(15), and one C(9) atom. The C(14)-C(15) bond length is 1.48 Å. In the fifteenth C site, C(15) is bonded in a distorted bent 120 degrees geometry to one C(14), one O(7), and one O(9) atom. The C(15)-O(7) bond length is 1.33 Å. The C(15)-O(9) bond length is 1.24 Å. In the sixteenth C site, C(16) is bonded in a distorted bent 120 degrees geometry to one C(11), one O(10), and one O(11) atom. The C(16)-O(10) bond length is 1.32 Å. The C(16)-O(11) bond length is 1.25 Å. There are fifteen inequivalent H sites. In the first H site, H(1) is bonded in a distorted bent 150 degrees geometry to one O(1) and one O(9) atom. The H(1)-O(1) bond length is 1.02 Å. The H(1)-O(9) bond length is 1.57 Å. In the second H site, H(2) is bonded in a single-bond geometry to one C(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(3) and one O(4) atom. The H(3)-O(3) bond length is 0.99 Å. The H(3)-O(4) bond length is 1.67 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(4) atom. In the fifth H site, H(5) is bonded in a linear geometry to one O(11) and one O(5) atom. The H(5)-O(11) bond length is 1.51 Å. The H(5)-O(5) bond length is 1.04 Å. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(5) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one O(8) atom. The H(7)-O(8) bond length is 1.00 Å. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(10) atom. In the ninth H site, H(9) is bonded in a linear geometry to one O(10) and one O(6) atom. The H(9)-O(10) bond length is 1.04 Å. The H(9)-O(6) bond length is 1.51 Å. In the tenth H site, H(10) is bonded in a single-bond geometry to one O(12) atom. The H(10)-O(12) bond length is 0.98 Å. In the eleventh H site, H(11) is bonded in a single-bond geometry to one O(12) atom. The H(11)-O(12) bond length is 0.99 Å. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(12) atom. In the thirteenth H site, H(13) is bonded in a single-bond geometry to one O(13) atom. The H(13)-O(13) bond length is 0.98 Å. In the fourteenth H site, H(14) is bonded in a distorted single-bond geometry to one O(13) atom. The H(14)-O(13) bond length is 1.00 Å. In the fifteenth H site, H(15) is bonded in a single-bond geometry to one C(13) atom. There are thirteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one B(1), one B(2), and one H(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Na(1), one B(1), and one C(7) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one B(1) and one H(3) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one C(7) and one H(3) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one C(8) and one H(5) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one C(8) and one H(9) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Na(1), one B(2), and one C(15) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one B(2) and one H(7) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one C(15) and one H(1) atom. In the tenth O site, O(10) is bonded in a water-like geometry to one C(16) and one H(9) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one C(16) and one H(5) atom. In the twelfth O site, O(12) is bonded in a distorted water-like geometry to two equivalent Na(1), one H(10), and one H(11) atom. In the thirteenth O site, O(13) is bonded in a distorted water-like geometry to two equivalent Na(1), one H(13), and one H(14) atom. Linkers: 2 OC(=O)c1ccc2c(c1)[B](O)(O)OC2=O.OB1OC(=O)c2c1cc(cc2)C(=O)O. Metal clusters: 2 [Na]. The MOF has largest included sphere 1.60 A, density 1.74 g/cm3, surface area 3814.96 m2/g, accessible volume 0.08 cm3/g