RbSnH6(C2O)6 crystallizes in the trigonal R3 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 9-coordinate geometry to one H(5), one H(6), one H(8), one O(1), one O(2), one O(3), one O(5), one O(6), and one O(8) atom. The Rb(1)-H(5) bond length is 2.94 Å. The Rb(1)-H(6) bond length is 2.93 Å. The Rb(1)-H(8) bond length is 2.93 Å. The Rb(1)-O(1) bond length is 3.15 Å. The Rb(1)-O(2) bond length is 3.15 Å. The Rb(1)-O(3) bond length is 3.14 Å. The Rb(1)-O(5) bond length is 2.85 Å. The Rb(1)-O(6) bond length is 2.84 Å. The Rb(1)-O(8) bond length is 2.85 Å. In the second Rb site, Rb(2) is bonded in a 9-coordinate geometry to three equivalent H(7), three equivalent O(4), and three equivalent O(7) atoms. All Rb(2)-H(7) bond lengths are 2.94 Å. All Rb(2)-O(4) bond lengths are 3.13 Å. All Rb(2)-O(7) bond lengths are 2.84 Å. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 3-coordinate geometry to one O(1), one O(2), and one O(3) atom. The Sn(1)-O(1) bond length is 2.27 Å. The Sn(1)-O(2) bond length is 2.27 Å. The Sn(1)-O(3) bond length is 2.27 Å. In the second Sn site, Sn(2) is bonded in a 3-coordinate geometry to three equivalent O(4) atoms. All Sn(2)-O(4) bond lengths are 2.27 Å. There are sixteen inequivalent C sites. In the first C site, C(13) is bonded in a distorted single-bond geometry to one C(1) and one H(5) atom. The C(13)-C(1) bond length is 1.40 Å. The C(13)-H(5) bond length is 1.09 Å. In the second C site, C(14) is bonded in a distorted single-bond geometry to one C(2) and one H(6) atom. The C(14)-C(2) bond length is 1.40 Å. The C(14)-H(6) bond length is 1.09 Å. In the third C site, C(15) is bonded in a distorted single-bond geometry to one C(3) and one H(7) atom. The C(15)-C(3) bond length is 1.40 Å. The C(15)-H(7) bond length is 1.09 Å. In the fourth C site, C(16) is bonded in a distorted single-bond geometry to one C(4) and one H(8) atom. The C(16)-C(4) bond length is 1.40 Å. The C(16)-H(8) bond length is 1.09 Å. In the fifth C site, C(1) is bonded in a trigonal planar geometry to one C(13), one C(5), and one C(9) atom. The C(1)-C(5) bond length is 1.49 Å. The C(1)-C(9) bond length is 1.40 Å. In the sixth C site, C(2) is bonded in a trigonal planar geometry to one C(10), one C(14), and one C(6) atom. The C(2)-C(10) bond length is 1.40 Å. The C(2)-C(6) bond length is 1.50 Å. In the seventh C site, C(3) is bonded in a trigonal planar geometry to one C(11), one C(15), and one C(7) atom. The C(3)-C(11) bond length is 1.40 Å. The C(3)-C(7) bond length is 1.49 Å. In the eighth C site, C(4) is bonded in a trigonal planar geometry to one C(12), one C(16), and one C(8) atom. The C(4)-C(12) bond length is 1.40 Å. The C(4)-C(8) bond length is 1.50 Å. In the ninth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(5) atom. The C(5)-O(1) bond length is 1.30 Å. The C(5)-O(5) bond length is 1.26 Å. In the tenth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(2), and one O(6) atom. The C(6)-O(2) bond length is 1.30 Å. The C(6)-O(6) bond length is 1.26 Å. In the eleventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(3), and one O(7) atom. The C(7)-O(3) bond length is 1.30 Å. The C(7)-O(7) bond length is 1.26 Å. In the twelfth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(4), and one O(8) atom. The C(8)-O(4) bond length is 1.30 Å. The C(8)-O(8) bond length is 1.26 Å. In the thirteenth C site, C(9) is bonded in a distorted single-bond geometry to one C(1) and one H(1) atom. The C(9)-H(1) bond length is 1.09 Å. In the fourteenth C site, C(10) is bonded in a distorted single-bond geometry to one C(2) and one H(2,4) atom. The C(10)-H(2,4) bond length is 1.09 Å. In the fifteenth C site, C(11) is bonded in a distorted single-bond geometry to one C(3) and one H(3) atom. The C(11)-H(3) bond length is 1.09 Å. In the sixteenth C site, C(12) is bonded in a distorted single-bond geometry to one C(4) and one H(2,4) atom. The C(12)-H(2,4) bond length is 1.09 Å. There are seven inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(9) atom. In the second H site, H(2,4) 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(11) atom. In the fourth H site, H(5) is bonded in a single-bond geometry to one Rb(1) and one C(13) atom. In the fifth H site, H(6) is bonded in a single-bond geometry to one Rb(1) and one C(14) atom. In the sixth H site, H(7) is bonded in a single-bond geometry to one Rb(2) and one C(15) atom. In the seventh H site, H(8) is bonded in a single-bond geometry to one Rb(1) and one C(16) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to one Rb(1), one Sn(1), and one C(5) atom. In the second O site, O(2) is bonded in a 1-coordinate geometry to one Rb(1), one Sn(1), and one C(6) atom. In the third O site, O(3) is bonded in a 1-coordinate geometry to one Rb(1), one Sn(1), and one C(7) atom. In the fourth O site, O(4) is bonded in a 1-coordinate geometry to one Rb(2), one Sn(2), and one C(8) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Rb(1) and one C(5) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Rb(1) and one C(6) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Rb(2) and one C(7) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one Rb(1) and one C(8) atom. Linkers: 6 [O]C(=O)c1ccc(C([O])=O)cc1. Metal clusters: 4 [Rb] ,4 [Sn]. The MOF has largest included sphere 1.91 A, density 2.16 g/cm3, surface area 3174.96 m2/g, accessible volume 0.14 cm3/g