MgSm2Mo2(O15I4)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 5-coordinate geometry to one O(12), one O(16), one O(2), one O(21), and one O(28) atom. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 8-coordinate geometry to one O(10), one O(11), one O(15), one O(17), one O(23), one O(27), one O(4), and one O(6) atom. In the second Sm site, Sm(2) is bonded in a 8-coordinate geometry to one O(12), one O(16), one O(18), one O(24), one O(28), one O(3), one O(5), and one O(9) atom. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a distorted octahedral geometry to one O(1), one O(13), one O(25), one O(27), one O(29), and one O(7) atom. In the second Mo site, Mo(2) is bonded in a 6-coordinate geometry to one O(14), one O(2), one O(26), one O(28), one O(30), and one O(8) atom. There are thirty inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Mo(1) and one I(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mg(1), one Mo(2), and one I(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Sm(2) and one I(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Sm(1) and one I(2) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Sm(2) and one I(1) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Sm(1) and one I(2) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Mo(1) and one I(3) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Mo(2) and one I(4) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Sm(2) and one I(3) atom. In the tenth O site, O(10) is bonded in a 2-coordinate geometry to one Sm(1) and one I(4) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one Sm(1) and one I(3) atom. In the twelfth O site, O(12) is bonded in a distorted water-like geometry to one Mg(1), one Sm(2), and one I(4) atom. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to one Mo(1) and one I(5) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Mo(2), one I(4), and one I(6) atom. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one Sm(1), one I(2), and one I(5) atom. In the sixteenth O site, O(16) is bonded in a distorted water-like geometry to one Mg(1), one Sm(2), and one I(6) atom. In the seventeenth O site, O(17) is bonded in a distorted bent 150 degrees geometry to one Sm(1) and one I(5) atom. In the eighteenth O site, O(18) is bonded in a distorted bent 120 degrees geometry to one Sm(2) and one I(6) atom. In the nineteenth O site, O(19) is bonded in a distorted single-bond geometry to one I(7) atom. In the twentieth O site, O(20) is bonded in a distorted single-bond geometry to one I(1) and one I(8) atom. In the twenty-first O site, O(21) is bonded in a 2-coordinate geometry to one Mg(1) and one I(7) atom. In the twenty-second O site, O(22) is bonded in a distorted single-bond geometry to one I(5) and one I(8) atom. In the twenty-third O site, O(23) is bonded in a distorted bent 150 degrees geometry to one Sm(1) and one I(7) atom. In the twenty-fourth O site, O(24) is bonded in a bent 150 degrees geometry to one Sm(2) and one I(8) atom. In the twenty-fifth O site, O(25) is bonded in a distorted single-bond geometry to one Mo(1) and one I(7) atom. In the twenty-sixth O site, O(26) is bonded in a single-bond geometry to one Mo(2) atom. In the twenty-seventh O site, O(27) is bonded in a distorted linear geometry to one Sm(1) and one Mo(1) atom. In the twenty-eighth O site, O(28) is bonded in a 3-coordinate geometry to one Mg(1), one Sm(2), and one Mo(2) atom. In the twenty-ninth O site, O(29) is bonded in a distorted single-bond geometry to one Mo(1) atom. In the thirtieth O site, O(30) is bonded in a single-bond geometry to one Mo(2) atom. There are eight inequivalent I sites. In the first I site, I(1) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(20), one O(3), and one O(5) atom. In the second I site, I(2) is bonded in a 3-coordinate geometry to one O(15), one O(2), one O(4), and one O(6) atom. In the third I site, I(3) is bonded in a 3-coordinate geometry to one O(11), one O(7), and one O(9) atom. In the fourth I site, I(4) is bonded in a 3-coordinate geometry to one O(10), one O(12), one O(14), and one O(8) atom. In the fifth I site, I(5) is bonded in a 3-coordinate geometry to one O(13), one O(15), one O(17), and one O(22) atom. In the sixth I site, I(6) is bonded in a 3-coordinate geometry to one O(14), one O(16), and one O(18) atom. In the seventh I site, I(7) is bonded in a distorted see-saw-like geometry to one O(19), one O(21), one O(23), and one O(25) atom. In the eighth I site, I(8) is bonded in a distorted trigonal non-coplanar geometry to one O(20), one O(22), and one O(24) atom.
MgSm2Mo2(O15I4)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 5-coordinate geometry to one O(12), one O(16), one O(2), one O(21), and one O(28) atom. The Mg(1)-O(12) bond length is 2.03 Å. The Mg(1)-O(16) bond length is 2.20 Å. The Mg(1)-O(2) bond length is 2.06 Å. The Mg(1)-O(21) bond length is 1.97 Å. The Mg(1)-O(28) bond length is 2.05 Å. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 8-coordinate geometry to one O(10), one O(11), one O(15), one O(17), one O(23), one O(27), one O(4), and one O(6) atom. The Sm(1)-O(10) bond length is 2.49 Å. The Sm(1)-O(11) bond length is 2.35 Å. The Sm(1)-O(15) bond length is 2.47 Å. The Sm(1)-O(17) bond length is 2.42 Å. The Sm(1)-O(23) bond length is 2.45 Å. The Sm(1)-O(27) bond length is 2.41 Å. The Sm(1)-O(4) bond length is 2.48 Å. The Sm(1)-O(6) bond length is 2.57 Å. In the second Sm site, Sm(2) is bonded in a 8-coordinate geometry to one O(12), one O(16), one O(18), one O(24), one O(28), one O(3), one O(5), and one O(9) atom. The Sm(2)-O(12) bond length is 2.94 Å. The Sm(2)-O(16) bond length is 2.86 Å. The Sm(2)-O(18) bond length is 2.47 Å. The Sm(2)-O(24) bond length is 2.32 Å. The Sm(2)-O(28) bond length is 2.45 Å. The Sm(2)-O(3) bond length is 2.36 Å. The Sm(2)-O(5) bond length is 2.39 Å. The Sm(2)-O(9) bond length is 2.31 Å. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a distorted octahedral geometry to one O(1), one O(13), one O(25), one O(27), one O(29), and one O(7) atom. The Mo(1)-O(1) bond length is 2.19 Å. The Mo(1)-O(13) bond length is 2.24 Å. The Mo(1)-O(25) bond length is 1.84 Å. The Mo(1)-O(27) bond length is 1.77 Å. The Mo(1)-O(29) bond length is 1.77 Å. The Mo(1)-O(7) bond length is 2.20 Å. In the second Mo site, Mo(2) is bonded in a 6-coordinate geometry to one O(14), one O(2), one O(26), one O(28), one O(30), and one O(8) atom. The Mo(2)-O(14) bond length is 2.25 Å. The Mo(2)-O(2) bond length is 2.36 Å. The Mo(2)-O(26) bond length is 1.75 Å. The Mo(2)-O(28) bond length is 1.85 Å. The Mo(2)-O(30) bond length is 1.77 Å. The Mo(2)-O(8) bond length is 2.08 Å. There are thirty inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Mo(1) and one I(1) atom. The O(1)-I(1) bond length is 1.85 Å. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mg(1), one Mo(2), and one I(2) atom. The O(2)-I(2) bond length is 1.89 Å. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Sm(2) and one I(1) atom. The O(3)-I(1) bond length is 1.82 Å. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Sm(1) and one I(2) atom. The O(4)-I(2) bond length is 1.81 Å. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Sm(2) and one I(1) atom. The O(5)-I(1) bond length is 1.85 Å. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Sm(1) and one I(2) atom. The O(6)-I(2) bond length is 1.85 Å. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Mo(1) and one I(3) atom. The O(7)-I(3) bond length is 1.88 Å. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Mo(2) and one I(4) atom. The O(8)-I(4) bond length is 1.90 Å. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Sm(2) and one I(3) atom. The O(9)-I(3) bond length is 1.83 Å. In the tenth O site, O(10) is bonded in a 2-coordinate geometry to one Sm(1) and one I(4) atom. The O(10)-I(4) bond length is 1.81 Å. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one Sm(1) and one I(3) atom. The O(11)-I(3) bond length is 1.81 Å. In the twelfth O site, O(12) is bonded in a distorted water-like geometry to one Mg(1), one Sm(2), and one I(4) atom. The O(12)-I(4) bond length is 1.85 Å. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to one Mo(1) and one I(5) atom. The O(13)-I(5) bond length is 1.86 Å. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Mo(2), one I(4), and one I(6) atom. The O(14)-I(4) bond length is 2.64 Å. The O(14)-I(6) bond length is 1.87 Å. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one Sm(1), one I(2), and one I(5) atom. The O(15)-I(2) bond length is 2.67 Å. The O(15)-I(5) bond length is 1.83 Å. In the sixteenth O site, O(16) is bonded in a distorted water-like geometry to one Mg(1), one Sm(2), and one I(6) atom. The O(16)-I(6) bond length is 1.83 Å. In the seventeenth O site, O(17) is bonded in a distorted bent 150 degrees geometry to one Sm(1) and one I(5) atom. The O(17)-I(5) bond length is 1.84 Å. In the eighteenth O site, O(18) is bonded in a distorted bent 120 degrees geometry to one Sm(2) and one I(6) atom. The O(18)-I(6) bond length is 1.82 Å. In the nineteenth O site, O(19) is bonded in a distorted single-bond geometry to one I(7) atom. The O(19)-I(7) bond length is 1.84 Å. In the twentieth O site, O(20) is bonded in a distorted single-bond geometry to one I(1) and one I(8) atom. The O(20)-I(1) bond length is 2.54 Å. The O(20)-I(8) bond length is 1.84 Å. In the twenty-first O site, O(21) is bonded in a 2-coordinate geometry to one Mg(1) and one I(7) atom. The O(21)-I(7) bond length is 1.89 Å. In the twenty-second O site, O(22) is bonded in a distorted single-bond geometry to one I(5) and one I(8) atom. The O(22)-I(5) bond length is 2.52 Å. The O(22)-I(8) bond length is 1.81 Å. In the twenty-third O site, O(23) is bonded in a distorted bent 150 degrees geometry to one Sm(1) and one I(7) atom. The O(23)-I(7) bond length is 1.82 Å. In the twenty-fourth O site, O(24) is bonded in a bent 150 degrees geometry to one Sm(2) and one I(8) atom. The O(24)-I(8) bond length is 1.84 Å. In the twenty-fifth O site, O(25) is bonded in a distorted single-bond geometry to one Mo(1) and one I(7) atom. The O(25)-I(7) bond length is 2.42 Å. In the twenty-sixth O site, O(26) is bonded in a single-bond geometry to one Mo(2) atom. In the twenty-seventh O site, O(27) is bonded in a distorted linear geometry to one Sm(1) and one Mo(1) atom. In the twenty-eighth O site, O(28) is bonded in a 3-coordinate geometry to one Mg(1), one Sm(2), and one Mo(2) atom. In the twenty-ninth O site, O(29) is bonded in a distorted single-bond geometry to one Mo(1) atom. In the thirtieth O site, O(30) is bonded in a single-bond geometry to one Mo(2) atom. There are eight inequivalent I sites. In the first I site, I(1) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(20), one O(3), and one O(5) atom. In the second I site, I(2) is bonded in a 3-coordinate geometry to one O(15), one O(2), one O(4), and one O(6) atom. In the third I site, I(3) is bonded in a 3-coordinate geometry to one O(11), one O(7), and one O(9) atom. In the fourth I site, I(4) is bonded in a 3-coordinate geometry to one O(10), one O(12), one O(14), and one O(8) atom. In the fifth I site, I(5) is bonded in a 3-coordinate geometry to one O(13), one O(15), one O(17), and one O(22) atom. In the sixth I site, I(6) is bonded in a 3-coordinate geometry to one O(14), one O(16), and one O(18) atom. In the seventh I site, I(7) is bonded in a distorted see-saw-like geometry to one O(19), one O(21), one O(23), and one O(25) atom. In the eighth I site, I(8) is bonded in a distorted trigonal non-coplanar geometry to one O(20), one O(22), and one O(24) atom.