Cu3H14(C17O6)2 crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Cu(1)-O(1) bond lengths are 1.96 Å. Both Cu(1)-O(2) bond lengths are 1.97 Å. In the second Cu site, Cu(2) is bonded in a rectangular see-saw-like geometry to four equivalent O(3) atoms. All Cu(2)-O(3) bond lengths are 1.98 Å. There are twelve inequivalent C sites. In the first C site, C(10) is bonded in a distorted single-bond geometry to two equivalent C(3) and one H(2) atom. Both C(10)-C(3) bond lengths are 1.38 Å. The C(10)-H(2) bond length is 0.93 Å. In the second C site, C(11) is bonded in a trigonal planar geometry to one C(6) and two equivalent C(9) atoms. The C(11)-C(6) bond length is 1.45 Å. Both C(11)-C(9) bond lengths are 1.39 Å. In the third C site, C(12) is bonded in a trigonal planar geometry to one C(2) and two equivalent C(4) atoms. The C(12)-C(2) bond length is 1.46 Å. Both C(12)-C(4) bond lengths are 1.38 Å. In the fourth C site, C(1) is bonded in a distorted single-bond geometry to one C(8), one C(9), and one H(3) atom. The C(1)-C(8) bond length is 1.38 Å. The C(1)-C(9) bond length is 1.41 Å. The C(1)-H(3) bond length is 0.93 Å. In the fifth C site, C(2) is bonded in a linear geometry to one C(12) and one C(6) atom. The C(2)-C(6) bond length is 1.15 Å. In the sixth C site, C(3) is bonded in a trigonal planar geometry to one C(10), one C(4), and one C(5) atom. The C(3)-C(4) bond length is 1.38 Å. The C(3)-C(5) bond length is 1.53 Å. In the seventh C site, C(4) is bonded in a distorted single-bond geometry to one C(12), one C(3), and one H(1) atom. The C(4)-H(1) bond length is 0.93 Å. In the eighth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(1), and one O(2) atom. The C(5)-O(1) bond length is 1.23 Å. The C(5)-O(2) bond length is 1.27 Å. In the ninth C site, C(6) is bonded in a linear geometry to one C(11) and one C(2) atom. In the tenth C site, C(7) is bonded in a bent 120 degrees geometry to one C(8) and two equivalent O(3) atoms. The C(7)-C(8) bond length is 1.47 Å. Both C(7)-O(3) bond lengths are 1.23 Å. In the eleventh C site, C(8) is bonded in a trigonal planar geometry to one C(7) and two equivalent C(1) atoms. In the twelfth C site, C(9) is bonded in a distorted trigonal planar geometry to one C(1), one C(11), and one H(4) atom. The C(9)-H(4) bond length is 0.93 Å. There are four 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(10) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(1) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(9) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Cu(1) and one C(5) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Cu(1) and one C(5) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Cu(2) and one C(7) atom. Linkers: 12 [O]C(=O)c1ccc(C#Cc2cc(C([O])=O)cc(C([O])=O)c2)cc1. Metal clusters: 6 [C]1O[Cu]234O[C]O[Cu]2(O1)(O[C]O3)O[C]O4 ,2 [C]1O[Cu]23O[C]O[Cu]4(O1)O[C]O[Cu](O[C]O2)(O[C]O3)O[C]O4. RCSR code: agw. The MOF has largest included sphere 14.75 A, density 0.50 g/cm3, surface area 4004.21 m2/g, accessible volume 1.60 cm3/g