EuPH12(C3O)7 is alpha structured and crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of one EuPH12(C3O)7 cluster. Eu(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(7), and two equivalent O(6) atoms. The Eu(1)-O(1) bond length is 2.48 Å. The Eu(1)-O(2) bond length is 2.42 Å. The Eu(1)-O(3) bond length is 2.38 Å. The Eu(1)-O(4) bond length is 2.51 Å. The Eu(1)-O(5) bond length is 2.38 Å. The Eu(1)-O(7) bond length is 2.34 Å. There is one shorter (2.35 Å) and one longer (2.83 Å) Eu(1)-O(6) bond length. There are twenty-one inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(21), one C(8), and one P(1) atom. The C(1)-C(21) bond length is 1.39 Å. The C(1)-C(8) bond length is 1.39 Å. The C(1)-P(1) bond length is 1.79 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(7) and one H(1) atom. The C(2)-C(7) bond length is 1.38 Å. The C(2)-H(1) bond length is 0.95 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(11), one C(5), and one P(1) atom. The C(3)-C(11) bond length is 1.40 Å. The C(3)-C(5) bond length is 1.40 Å. The C(3)-P(1) bond length is 1.79 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(10), one C(6), and one P(1) atom. The C(4)-C(10) bond length is 1.41 Å. The C(4)-C(6) bond length is 1.40 Å. The C(4)-P(1) bond length is 1.80 Å. In the fifth C site, C(5) is bonded in a distorted single-bond geometry to one C(3) and one H(2) atom. The C(5)-H(2) bond length is 0.95 Å. In the sixth C site, C(6) is bonded in a single-bond geometry to one C(4) and one H(3) atom. The C(6)-H(3) bond length is 0.95 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one C(2), one C(20), and one C(9) atom. The C(7)-C(20) bond length is 1.49 Å. The C(7)-C(9) bond length is 1.39 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(1) and one H(4) atom. The C(8)-H(4) bond length is 0.95 Å. In the ninth C site, C(9) is bonded in a distorted single-bond geometry to one C(7) and one H(5) atom. The C(9)-H(5) bond length is 0.95 Å. In the tenth C site, C(10) is bonded in a distorted single-bond geometry to one C(4) and one H(6) atom. The C(10)-H(6) bond length is 0.95 Å. In the eleventh C site, C(11) is bonded in a distorted single-bond geometry to one C(3) and one H(7) atom. The C(11)-H(7) bond length is 0.95 Å. In the twelfth C site, C(12) is bonded in a trigonal planar geometry to one C(13), one C(14), and one C(15) atom. The C(12)-C(13) bond length is 1.50 Å. The C(12)-C(14) bond length is 1.39 Å. The C(12)-C(15) bond length is 1.38 Å. In the thirteenth C site, C(13) is bonded in a distorted bent 120 degrees geometry to one C(12), one O(1), and one O(4) atom. The C(13)-O(1) bond length is 1.25 Å. The C(13)-O(4) bond length is 1.27 Å. In the fourteenth C site, C(14) is bonded in a distorted single-bond geometry to one C(12) and one H(8) atom. The C(14)-H(8) bond length is 0.95 Å. In the fifteenth C site, C(15) is bonded in a distorted single-bond geometry to one C(12) and one H(9) atom. The C(15)-H(9) bond length is 0.95 Å. In the sixteenth C site, C(16) is bonded in a trigonal planar geometry to one C(17), one C(18), and one C(19) atom. The C(16)-C(17) bond length is 1.39 Å. The C(16)-C(18) bond length is 1.39 Å. The C(16)-C(19) bond length is 1.49 Å. In the seventeenth C site, C(17) is bonded in a distorted single-bond geometry to one C(16) and one H(10,11) atom. The C(17)-H(10,11) bond length is 0.95 Å. In the eighteenth C site, C(18) is bonded in a distorted single-bond geometry to one C(16) and one H(10,11) atom. The C(18)-H(10,11) bond length is 0.95 Å. In the nineteenth C site, C(19) is bonded in a distorted bent 120 degrees geometry to one C(16), one O(3), and one O(5) atom. The C(19)-O(3) bond length is 1.28 Å. The C(19)-O(5) bond length is 1.26 Å. In the twentieth C site, C(20) is bonded in a bent 120 degrees geometry to one C(7), one O(2), and one O(6) atom. The C(20)-O(2) bond length is 1.26 Å. The C(20)-O(6) bond length is 1.27 Å. In the twenty-first C site, C(21) is bonded in a distorted single-bond geometry to one C(1) and one H(12) atom. The C(21)-H(12) bond length is 0.95 Å. P(1) is bonded in a tetrahedral geometry to one C(1), one C(3), one C(4), and one O(7) atom. The P(1)-O(7) bond length is 1.49 Å. There are eleven inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(5) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(6) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(8) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(9) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(10) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(11) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(14) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(15) atom. In the tenth H site, H(10,11) is bonded in a single-bond geometry to one C(17) atom. In the eleventh H site, H(12) is bonded in a single-bond geometry to one C(21) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Eu(1) and one C(13) atom. In the second O site, O(2) is bonded in a distorted water-like geometry to one Eu(1) and one C(20) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Eu(1) and one C(19) atom. In the fourth O site, O(4) is bonded in a distorted L-shaped geometry to one Eu(1) and one C(13) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Eu(1) and one C(19) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to two equivalent Eu(1) and one C(20) atom. In the seventh O site, O(7) is bonded in a distorted linear geometry to one Eu(1) and one P(1) atom. Linkers: 2 [O]C(=O)c1ccc(P(=O)(c2ccc(C([O])=O)cc2)c2ccc(C([O])=O)cc2)cc1. Metal clusters: 1 [O][Eu]123(O[C]=O)O[C]O[Eu]([O])(O[C]=O)(O[C]O1)(O[C]O2)O[C]O3. RCSR code: flu. The MOF has largest included sphere 6.96 A, density 1.17 g/cm3, surface area 3424.13 m2/g, accessible volume 0.48 cm3/g