La4Mo12PH2(C5O18)2 crystallizes in the triclinic P-1 space group. There are four inequivalent La sites. In the first La site, La(1) is bonded in a 5-coordinate geometry to one O(14), one O(2), one O(29), one O(30), and one O(7) atom. The La(1)-O(14) bond length is 2.59 Å. The La(1)-O(2) bond length is 2.58 Å. The La(1)-O(29) bond length is 2.65 Å. The La(1)-O(30) bond length is 2.59 Å. The La(1)-O(7) bond length is 2.49 Å. In the second La site, La(2) is bonded in a 3-coordinate geometry to one O(1), one O(17), one O(31), and one O(9) atom. The La(2)-O(1) bond length is 2.50 Å. The La(2)-O(17) bond length is 2.45 Å. The La(2)-O(31) bond length is 2.50 Å. The La(2)-O(9) bond length is 2.58 Å. In the third La site, La(3) is bonded in a 5-coordinate geometry to one O(15), one O(18), one O(23), one O(33), and one O(34) atom. The La(3)-O(15) bond length is 2.50 Å. The La(3)-O(18) bond length is 2.49 Å. The La(3)-O(23) bond length is 2.68 Å. The La(3)-O(33) bond length is 2.58 Å. The La(3)-O(34) bond length is 2.62 Å. In the fourth La site, La(4) is bonded in a 3-coordinate geometry to one O(10), one O(24), one O(35), and one O(8) atom. The La(4)-O(10) bond length is 2.57 Å. The La(4)-O(24) bond length is 2.61 Å. The La(4)-O(35) bond length is 2.56 Å. The La(4)-O(8) bond length is 2.47 Å. There are twelve inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(4), and one O(5) atom. The Mo(1)-O(1) bond length is 1.96 Å. The Mo(1)-O(2) bond length is 1.93 Å. The Mo(1)-O(3) bond length is 2.02 Å. The Mo(1)-O(4) bond length is 2.03 Å. The Mo(1)-O(5) bond length is 2.56 Å. In the second Mo site, Mo(2) is bonded in a 5-coordinate geometry to one O(4), one O(5), one O(6), one O(7), and one O(8) atom. The Mo(2)-O(4) bond length is 1.83 Å. The Mo(2)-O(5) bond length is 2.65 Å. The Mo(2)-O(6) bond length is 1.83 Å. The Mo(2)-O(7) bond length is 1.98 Å. The Mo(2)-O(8) bond length is 1.97 Å. In the third Mo site, Mo(3) is bonded to one O(10), one O(3), one O(5), one O(6), and one O(9) atom to form distorted MoO5 square pyramids that share  a cornercorner with one P(1)O4 tetrahedra. The Mo(3)-O(10) bond length is 1.97 Å. The Mo(3)-O(3) bond length is 2.01 Å. The Mo(3)-O(5) bond length is 2.47 Å. The Mo(3)-O(6) bond length is 2.04 Å. The Mo(3)-O(9) bond length is 1.96 Å. In the fourth Mo site, Mo(4) is bonded in a 5-coordinate geometry to one O(1), one O(11), one O(12), one O(13), and one O(2) atom. The Mo(4)-O(1) bond length is 1.95 Å. The Mo(4)-O(11) bond length is 2.02 Å. The Mo(4)-O(12) bond length is 2.01 Å. The Mo(4)-O(13) bond length is 2.57 Å. The Mo(4)-O(2) bond length is 1.93 Å. In the fifth Mo site, Mo(5) is bonded to one O(11), one O(13), one O(14), one O(15), and one O(16) atom to form distorted MoO5 square pyramids that share  a cornercorner with one P(1)O4 tetrahedra. The Mo(5)-O(11) bond length is 2.07 Å. The Mo(5)-O(13) bond length is 2.43 Å. The Mo(5)-O(14) bond length is 1.95 Å. The Mo(5)-O(15) bond length is 1.97 Å. The Mo(5)-O(16) bond length is 2.06 Å. In the sixth Mo site, Mo(6) is bonded in a 5-coordinate geometry to one O(12), one O(13), one O(16), one O(17), and one O(18) atom. The Mo(6)-O(12) bond length is 1.87 Å. The Mo(6)-O(13) bond length is 2.60 Å. The Mo(6)-O(16) bond length is 1.79 Å. The Mo(6)-O(17) bond length is 1.98 Å. The Mo(6)-O(18) bond length is 2.00 Å. In the seventh Mo site, Mo(7) is bonded in a 5-coordinate geometry to one O(17), one O(18), one O(19), one O(20), and one O(21) atom. The Mo(7)-O(17) bond length is 2.02 Å. The Mo(7)-O(18) bond length is 1.97 Å. The Mo(7)-O(19) bond length is 1.83 Å. The Mo(7)-O(20) bond length is 1.85 Å. The Mo(7)-O(21) bond length is 2.65 Å. In the eighth Mo site, Mo(8) is bonded in a 5-coordinate geometry to one O(10), one O(20), one O(21), one O(22), and one O(9) atom. The Mo(8)-O(10) bond length is 1.95 Å. The Mo(8)-O(20) bond length is 2.02 Å. The Mo(8)-O(21) bond length is 2.48 Å. The Mo(8)-O(22) bond length is 2.05 Å. The Mo(8)-O(9) bond length is 1.95 Å. In the ninth Mo site, Mo(9) is bonded in a 5-coordinate geometry to one O(19), one O(21), one O(22), one O(23), and one O(24) atom. The Mo(9)-O(19) bond length is 2.02 Å. The Mo(9)-O(21) bond length is 2.47 Å. The Mo(9)-O(22) bond length is 2.06 Å. The Mo(9)-O(23) bond length is 1.93 Å. The Mo(9)-O(24) bond length is 1.96 Å. In the tenth Mo site, Mo(10) is bonded to one O(23), one O(24), one O(25), one O(26), and one O(27) atom to form distorted MoO5 square pyramids that share  a cornercorner with one P(1)O4 tetrahedra. The Mo(10)-O(23) bond length is 1.92 Å. The Mo(10)-O(24) bond length is 1.94 Å. The Mo(10)-O(25) bond length is 2.01 Å. The Mo(10)-O(26) bond length is 2.07 Å. The Mo(10)-O(27) bond length is 2.44 Å. In the eleventh Mo site, Mo(11) is bonded in a 5-coordinate geometry to one O(14), one O(15), one O(26), one O(27), and one O(28) atom. The Mo(11)-O(14) bond length is 1.97 Å. The Mo(11)-O(15) bond length is 1.99 Å. The Mo(11)-O(26) bond length is 2.09 Å. The Mo(11)-O(27) bond length is 2.48 Å. The Mo(11)-O(28) bond length is 2.00 Å. In the twelfth Mo site, Mo(12) is bonded in a 5-coordinate geometry to one O(25), one O(27), one O(28), one O(7), and one O(8) atom. The Mo(12)-O(25) bond length is 1.83 Å. The Mo(12)-O(27) bond length is 2.68 Å. The Mo(12)-O(28) bond length is 1.80 Å. The Mo(12)-O(7) bond length is 1.98 Å. The Mo(12)-O(8) bond length is 1.99 Å. There are ten inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(33), and one O(34) atom. The C(1)-C(2) bond length is 1.55 Å. The C(1)-O(33) bond length is 1.29 Å. The C(1)-O(34) bond length is 1.21 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(4) atom. The C(2)-C(3) bond length is 1.40 Å. The C(2)-C(4) bond length is 1.37 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(5) atom. The C(3)-C(4) bond length is 1.39 Å. The C(3)-C(5) bond length is 1.55 Å. In the fourth C site, C(4) is bonded in a single-bond geometry to one C(2), one C(3), and one H(1) atom. The C(4)-H(1) bond length is 0.93 Å. In the fifth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(31), and one O(32) atom. The C(5)-O(31) bond length is 1.29 Å. The C(5)-O(32) bond length is 1.21 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(10), one C(7), and one C(8) atom. The C(6)-C(10) bond length is 1.55 Å. The C(6)-C(7) bond length is 1.41 Å. The C(6)-C(8) bond length is 1.39 Å. In the seventh C site, C(7) is bonded in a single-bond geometry to one C(6), one C(8), and one H(2) atom. The C(7)-C(8) bond length is 1.41 Å. The C(7)-H(2) bond length is 0.93 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one C(6), one C(7), and one C(9) atom. The C(8)-C(9) bond length is 1.50 Å. In the ninth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one C(8), one O(29), and one O(30) atom. The C(9)-O(29) bond length is 1.21 Å. The C(9)-O(30) bond length is 1.28 Å. In the tenth C site, C(10) is bonded in a distorted trigonal planar geometry to one C(6), one O(35), and one O(36) atom. The C(10)-O(35) bond length is 1.27 Å. The C(10)-O(36) bond length is 1.27 Å. P(1) is bonded to one O(13), one O(21), one O(27), and one O(5) atom to form PO4 tetrahedra that share  a cornercorner with one Mo(10)O5 square pyramid,  a cornercorner with one Mo(3)O5 square pyramid, and  a cornercorner with one Mo(5)O5 square pyramid. The P(1)-O(13) bond length is 1.57 Å. The P(1)-O(21) bond length is 1.58 Å. The P(1)-O(27) bond length is 1.55 Å. The P(1)-O(5) bond length is 1.54 Å. There are two 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(7) atom. There are thirty-six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one La(2), one Mo(1), and one Mo(4) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one La(1), one Mo(1), and one Mo(4) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Mo(1) and one Mo(3) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Mo(1) and one Mo(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Mo(1), one Mo(2), one Mo(3), and one P(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Mo(2) and one Mo(3) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one La(1), one Mo(12), and one Mo(2) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one La(4), one Mo(12), and one Mo(2) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one La(2), one Mo(3), and one Mo(8) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one La(4), one Mo(3), and one Mo(8) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Mo(4) and one Mo(5) atom. In the twelfth O site, O(12) is bonded in a distorted bent 120 degrees geometry to one Mo(4) and one Mo(6) atom. In the thirteenth O site, O(13) is bonded in a distorted single-bond geometry to one Mo(4), one Mo(5), one Mo(6), and one P(1) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one La(1), one Mo(11), and one Mo(5) atom. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one La(3), one Mo(11), and one Mo(5) atom. In the sixteenth O site, O(16) is bonded in a bent 120 degrees geometry to one Mo(5) and one Mo(6) atom. In the seventeenth O site, O(17) is bonded in a distorted trigonal planar geometry to one La(2), one Mo(6), and one Mo(7) atom. In the eighteenth O site, O(18) is bonded in a distorted trigonal planar geometry to one La(3), one Mo(6), and one Mo(7) atom. In the nineteenth O site, O(19) is bonded in a bent 120 degrees geometry to one Mo(7) and one Mo(9) atom. In the twentieth O site, O(20) is bonded in a bent 120 degrees geometry to one Mo(7) and one Mo(8) atom. In the twenty-first O site, O(21) is bonded in a distorted single-bond geometry to one Mo(7), one Mo(8), one Mo(9), and one P(1) atom. In the twenty-second O site, O(22) is bonded in a bent 120 degrees geometry to one Mo(8) and one Mo(9) atom. In the twenty-third O site, O(23) is bonded in a 3-coordinate geometry to one La(3), one Mo(10), and one Mo(9) atom. In the twenty-fourth O site, O(24) is bonded in a 3-coordinate geometry to one La(4), one Mo(10), and one Mo(9) atom. In the twenty-fifth O site, O(25) is bonded in a bent 120 degrees geometry to one Mo(10) and one Mo(12) atom. In the twenty-sixth O site, O(26) is bonded in a bent 120 degrees geometry to one Mo(10) and one Mo(11) atom. In the twenty-seventh O site, O(27) is bonded in a distorted single-bond geometry to one Mo(10), one Mo(11), one Mo(12), and one P(1) atom. In the twenty-eighth O site, O(28) is bonded in a bent 120 degrees geometry to one Mo(11) and one Mo(12) atom. In the twenty-ninth O site, O(29) is bonded in a single-bond geometry to one La(1) and one C(9) atom. In the thirtieth O site, O(30) is bonded in a single-bond geometry to one La(1) and one C(9) atom. In the thirty-first O site, O(31) is bonded in a bent 150 degrees geometry to one La(2) and one C(5) atom. In the thirty-second O site, O(32) is bonded in a single-bond geometry to one C(5) atom. In the thirty-third O site, O(33) is bonded in a single-bond geometry to one La(3) and one C(1) atom. In the thirty-fourth O site, O(34) is bonded in a single-bond geometry to one La(3) and one C(1) atom. In the thirty-fifth O site, O(35) is bonded in a distorted bent 150 degrees geometry to one La(4) and one C(10) atom. In the thirty-sixth O site, O(36) is bonded in a single-bond geometry to one C(10) atom. Linkers: 2 [O]C(=O)c1cc(C([O])=O)c(C([O])=O)cc1C([O])=O. Metal clusters: 2 O1[Mo]23O[Mo]14O[Mo]156O[Mo]17(O[Mo]18O[Mo]9(O1)O[Mo]1%10(O[Mo]1(O2)(O%10)O[Mo]12(O3)O[Mo]1(O8)(O2)O7)O[Mo]12(O9)O[Mo]1(O4)(O2)O5)O6.O=[C]O[La].O=[C]O[La].[C]1O[La]O1.[C]1O[La]O1. RCSR code: pts. The MOF has largest included sphere 7.25 A, density 2.14 g/cm3, surface area 1615.28 m2/g, accessible volume 0.26 cm3/g