Fe2Cu10Cd3(SnSe4)5 is Clathrate-derived structured and crystallizes in the orthorhombic Fmm2 space group. Fe(1) is bonded to one Se(1), one Se(2), and two equivalent Se(8) atoms to form FeSe4 tetrahedra that share  a cornercorner with one Sn(2)Se4 tetrahedra, corners with three equivalent Sn(1)Se4 tetrahedra, corners with four equivalent Cu(1)Se4 tetrahedra, and corners with four equivalent Cu(2)Se4 tetrahedra. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to two equivalent Se(1) and two equivalent Se(8) atoms to form CuSe4 tetrahedra that share corners with two equivalent Cu(1)Se4 tetrahedra, corners with two equivalent Cu(2)Se4 tetrahedra, corners with four equivalent Fe(1)Se4 tetrahedra, and corners with four equivalent Sn(1)Se4 tetrahedra. In the second Cu site, Cu(2) is bonded to one Se(2), one Se(5), one Se(6), and one Se(8) atom to form CuSe4 tetrahedra that share  a cornercorner with one Cu(1)Se4 tetrahedra,  a cornercorner with one Cu(3)Se4 tetrahedra, corners with two equivalent Fe(1)Se4 tetrahedra, corners with two equivalent Cu(2)Se4 tetrahedra, corners with two equivalent Cd(1)Se4 tetrahedra, corners with two equivalent Sn(1)Se4 tetrahedra, and corners with two equivalent Sn(2)Se4 tetrahedra. In the third Cu site, Cu(3) is bonded to one Se(3), one Se(4), one Se(6), and one Se(7) atom to form CuSe4 tetrahedra that share  a cornercorner with one Cu(2)Se4 tetrahedra, corners with two equivalent Cd(1)Se4 tetrahedra, corners with two equivalent Cd(2)Se4 tetrahedra, corners with two equivalent Sn(2)Se4 tetrahedra, corners with two equivalent Sn(3)Se4 tetrahedra, and corners with three equivalent Cu(3)Se4 tetrahedra. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one Se(3), one Se(5), and two equivalent Se(6) atoms to form CdSe4 tetrahedra that share  a cornercorner with one Sn(1)Se4 tetrahedra,  a cornercorner with one Sn(3)Se4 tetrahedra, corners with two equivalent Sn(2)Se4 tetrahedra, corners with four equivalent Cu(2)Se4 tetrahedra, and corners with four equivalent Cu(3)Se4 tetrahedra. In the second Cd site, Cd(2) is bonded to two equivalent Se(4) and two equivalent Se(7) atoms to form CdSe4 tetrahedra that share corners with two equivalent Sn(2)Se4 tetrahedra, corners with two equivalent Sn(3)Se4 tetrahedra, and corners with eight equivalent Cu(3)Se4 tetrahedra. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one Se(1), one Se(5), and two equivalent Se(8) atoms to form SnSe4 tetrahedra that share  a cornercorner with one Cd(1)Se4 tetrahedra, corners with three equivalent Fe(1)Se4 tetrahedra, corners with four equivalent Cu(1)Se4 tetrahedra, and corners with four equivalent Cu(2)Se4 tetrahedra. In the second Sn site, Sn(2) is bonded to one Se(2), one Se(4), and two equivalent Se(6) atoms to form SnSe4 tetrahedra that share  a cornercorner with one Fe(1)Se4 tetrahedra,  a cornercorner with one Cd(2)Se4 tetrahedra, corners with two equivalent Cd(1)Se4 tetrahedra, corners with four equivalent Cu(2)Se4 tetrahedra, and corners with four equivalent Cu(3)Se4 tetrahedra. In the third Sn site, Sn(3) is bonded to two equivalent Se(3) and two equivalent Se(7) atoms to form SnSe4 tetrahedra that share corners with two equivalent Cd(1)Se4 tetrahedra, corners with two equivalent Cd(2)Se4 tetrahedra, and corners with eight equivalent Cu(3)Se4 tetrahedra. There are eight inequivalent Se sites. In the first Se site, Se(1) is bonded to one Fe(1), two equivalent Cu(1), and one Sn(1) atom to form SeFeCu2Sn tetrahedra that share  a cornercorner with one Se(5)CdCu2Sn tetrahedra,  a cornercorner with one Se(2)FeCu2Sn tetrahedra, corners with two equivalent Se(1)FeCu2Sn tetrahedra, and corners with eight equivalent Se(8)FeCu2Sn tetrahedra. In the second Se site, Se(2) is bonded to one Fe(1), two equivalent Cu(2), and one Sn(2) atom to form SeFeCu2Sn tetrahedra that share  a cornercorner with one Se(4)CdCu2Sn tetrahedra,  a cornercorner with one Se(1)FeCu2Sn tetrahedra, corners with two equivalent Se(5)CdCu2Sn tetrahedra, corners with four equivalent Se(6)CdCu2Sn tetrahedra, and corners with four equivalent Se(8)FeCu2Sn tetrahedra. In the third Se site, Se(3) is bonded to two equivalent Cu(3), one Cd(1), and one Sn(3) atom to form corner-sharing SeCdCu2Sn tetrahedra. In the fourth Se site, Se(4) is bonded to two equivalent Cu(3), one Cd(2), and one Sn(2) atom to form SeCdCu2Sn tetrahedra that share  a cornercorner with one Se(4)CdCu2Sn tetrahedra,  a cornercorner with one Se(2)FeCu2Sn tetrahedra, corners with two equivalent Se(3)CdCu2Sn tetrahedra, corners with four equivalent Se(6)CdCu2Sn tetrahedra, and corners with four equivalent Se(7)CdCu2Sn tetrahedra. In the fifth Se site, Se(5) is bonded to two equivalent Cu(2), one Cd(1), and one Sn(1) atom to form SeCdCu2Sn tetrahedra that share  a cornercorner with one Se(3)CdCu2Sn tetrahedra,  a cornercorner with one Se(1)FeCu2Sn tetrahedra, corners with two equivalent Se(2)FeCu2Sn tetrahedra, corners with four equivalent Se(6)CdCu2Sn tetrahedra, and corners with four equivalent Se(8)FeCu2Sn tetrahedra. In the sixth Se site, Se(8) is bonded to one Fe(1), one Cu(1), one Cu(2), and one Sn(1) atom to form SeFeCu2Sn tetrahedra that share  a cornercorner with one Se(6)CdCu2Sn tetrahedra, corners with two equivalent Se(5)CdCu2Sn tetrahedra, corners with two equivalent Se(2)FeCu2Sn tetrahedra, corners with three equivalent Se(8)FeCu2Sn tetrahedra, and corners with four equivalent Se(1)FeCu2Sn tetrahedra. In the seventh Se site, Se(6) is bonded to one Cu(2), one Cu(3), one Cd(1), and one Sn(2) atom to form SeCdCu2Sn tetrahedra that share  a cornercorner with one Se(7)CdCu2Sn tetrahedra,  a cornercorner with one Se(8)FeCu2Sn tetrahedra, corners with two equivalent Se(3)CdCu2Sn tetrahedra, corners with two equivalent Se(4)CdCu2Sn tetrahedra, corners with two equivalent Se(5)CdCu2Sn tetrahedra, corners with two equivalent Se(6)CdCu2Sn tetrahedra, and corners with two equivalent Se(2)FeCu2Sn tetrahedra. In the eighth Se site, Se(7) is bonded to two equivalent Cu(3), one Cd(2), and one Sn(3) atom to form corner-sharing SeCdCu2Sn tetrahedra.
Fe2Cu10Cd3(SnSe4)5 is Clathrate-derived structured and crystallizes in the orthorhombic Fmm2 space group. Fe(1) is bonded to one Se(1), one Se(2), and two equivalent Se(8) atoms to form FeSe4 tetrahedra that share  a cornercorner with one Sn(2)Se4 tetrahedra, corners with three equivalent Sn(1)Se4 tetrahedra, corners with four equivalent Cu(1)Se4 tetrahedra, and corners with four equivalent Cu(2)Se4 tetrahedra. The Fe(1)-Se(1) bond length is 2.47 Å. The Fe(1)-Se(2) bond length is 2.47 Å. Both Fe(1)-Se(8) bond lengths are 2.46 Å. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to two equivalent Se(1) and two equivalent Se(8) atoms to form CuSe4 tetrahedra that share corners with two equivalent Cu(1)Se4 tetrahedra, corners with two equivalent Cu(2)Se4 tetrahedra, corners with four equivalent Fe(1)Se4 tetrahedra, and corners with four equivalent Sn(1)Se4 tetrahedra. Both Cu(1)-Se(1) bond lengths are 2.47 Å. Both Cu(1)-Se(8) bond lengths are 2.47 Å. In the second Cu site, Cu(2) is bonded to one Se(2), one Se(5), one Se(6), and one Se(8) atom to form CuSe4 tetrahedra that share  a cornercorner with one Cu(1)Se4 tetrahedra,  a cornercorner with one Cu(3)Se4 tetrahedra, corners with two equivalent Fe(1)Se4 tetrahedra, corners with two equivalent Cu(2)Se4 tetrahedra, corners with two equivalent Cd(1)Se4 tetrahedra, corners with two equivalent Sn(1)Se4 tetrahedra, and corners with two equivalent Sn(2)Se4 tetrahedra. The Cu(2)-Se(2) bond length is 2.46 Å. The Cu(2)-Se(5) bond length is 2.42 Å. The Cu(2)-Se(6) bond length is 2.42 Å. The Cu(2)-Se(8) bond length is 2.47 Å. In the third Cu site, Cu(3) is bonded to one Se(3), one Se(4), one Se(6), and one Se(7) atom to form CuSe4 tetrahedra that share  a cornercorner with one Cu(2)Se4 tetrahedra, corners with two equivalent Cd(1)Se4 tetrahedra, corners with two equivalent Cd(2)Se4 tetrahedra, corners with two equivalent Sn(2)Se4 tetrahedra, corners with two equivalent Sn(3)Se4 tetrahedra, and corners with three equivalent Cu(3)Se4 tetrahedra. The Cu(3)-Se(3) bond length is 2.41 Å. The Cu(3)-Se(4) bond length is 2.41 Å. The Cu(3)-Se(6) bond length is 2.41 Å. The Cu(3)-Se(7) bond length is 2.41 Å. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one Se(3), one Se(5), and two equivalent Se(6) atoms to form CdSe4 tetrahedra that share  a cornercorner with one Sn(1)Se4 tetrahedra,  a cornercorner with one Sn(3)Se4 tetrahedra, corners with two equivalent Sn(2)Se4 tetrahedra, corners with four equivalent Cu(2)Se4 tetrahedra, and corners with four equivalent Cu(3)Se4 tetrahedra. The Cd(1)-Se(3) bond length is 2.67 Å. The Cd(1)-Se(5) bond length is 2.67 Å. Both Cd(1)-Se(6) bond lengths are 2.67 Å. In the second Cd site, Cd(2) is bonded to two equivalent Se(4) and two equivalent Se(7) atoms to form CdSe4 tetrahedra that share corners with two equivalent Sn(2)Se4 tetrahedra, corners with two equivalent Sn(3)Se4 tetrahedra, and corners with eight equivalent Cu(3)Se4 tetrahedra. Both Cd(2)-Se(4) bond lengths are 2.67 Å. Both Cd(2)-Se(7) bond lengths are 2.67 Å. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one Se(1), one Se(5), and two equivalent Se(8) atoms to form SnSe4 tetrahedra that share  a cornercorner with one Cd(1)Se4 tetrahedra, corners with three equivalent Fe(1)Se4 tetrahedra, corners with four equivalent Cu(1)Se4 tetrahedra, and corners with four equivalent Cu(2)Se4 tetrahedra. The Sn(1)-Se(1) bond length is 2.66 Å. The Sn(1)-Se(5) bond length is 2.62 Å. Both Sn(1)-Se(8) bond lengths are 2.66 Å. In the second Sn site, Sn(2) is bonded to one Se(2), one Se(4), and two equivalent Se(6) atoms to form SnSe4 tetrahedra that share  a cornercorner with one Fe(1)Se4 tetrahedra,  a cornercorner with one Cd(2)Se4 tetrahedra, corners with two equivalent Cd(1)Se4 tetrahedra, corners with four equivalent Cu(2)Se4 tetrahedra, and corners with four equivalent Cu(3)Se4 tetrahedra. The Sn(2)-Se(2) bond length is 2.65 Å. The Sn(2)-Se(4) bond length is 2.61 Å. Both Sn(2)-Se(6) bond lengths are 2.61 Å. In the third Sn site, Sn(3) is bonded to two equivalent Se(3) and two equivalent Se(7) atoms to form SnSe4 tetrahedra that share corners with two equivalent Cd(1)Se4 tetrahedra, corners with two equivalent Cd(2)Se4 tetrahedra, and corners with eight equivalent Cu(3)Se4 tetrahedra. Both Sn(3)-Se(3) bond lengths are 2.60 Å. Both Sn(3)-Se(7) bond lengths are 2.60 Å. There are eight inequivalent Se sites. In the first Se site, Se(1) is bonded to one Fe(1), two equivalent Cu(1), and one Sn(1) atom to form SeFeCu2Sn tetrahedra that share  a cornercorner with one Se(5)CdCu2Sn tetrahedra,  a cornercorner with one Se(2)FeCu2Sn tetrahedra, corners with two equivalent Se(1)FeCu2Sn tetrahedra, and corners with eight equivalent Se(8)FeCu2Sn tetrahedra. In the second Se site, Se(2) is bonded to one Fe(1), two equivalent Cu(2), and one Sn(2) atom to form SeFeCu2Sn tetrahedra that share  a cornercorner with one Se(4)CdCu2Sn tetrahedra,  a cornercorner with one Se(1)FeCu2Sn tetrahedra, corners with two equivalent Se(5)CdCu2Sn tetrahedra, corners with four equivalent Se(6)CdCu2Sn tetrahedra, and corners with four equivalent Se(8)FeCu2Sn tetrahedra. In the third Se site, Se(3) is bonded to two equivalent Cu(3), one Cd(1), and one Sn(3) atom to form corner-sharing SeCdCu2Sn tetrahedra. In the fourth Se site, Se(4) is bonded to two equivalent Cu(3), one Cd(2), and one Sn(2) atom to form SeCdCu2Sn tetrahedra that share  a cornercorner with one Se(4)CdCu2Sn tetrahedra,  a cornercorner with one Se(2)FeCu2Sn tetrahedra, corners with two equivalent Se(3)CdCu2Sn tetrahedra, corners with four equivalent Se(6)CdCu2Sn tetrahedra, and corners with four equivalent Se(7)CdCu2Sn tetrahedra. In the fifth Se site, Se(5) is bonded to two equivalent Cu(2), one Cd(1), and one Sn(1) atom to form SeCdCu2Sn tetrahedra that share  a cornercorner with one Se(3)CdCu2Sn tetrahedra,  a cornercorner with one Se(1)FeCu2Sn tetrahedra, corners with two equivalent Se(2)FeCu2Sn tetrahedra, corners with four equivalent Se(6)CdCu2Sn tetrahedra, and corners with four equivalent Se(8)FeCu2Sn tetrahedra. In the sixth Se site, Se(8) is bonded to one Fe(1), one Cu(1), one Cu(2), and one Sn(1) atom to form SeFeCu2Sn tetrahedra that share  a cornercorner with one Se(6)CdCu2Sn tetrahedra, corners with two equivalent Se(5)CdCu2Sn tetrahedra, corners with two equivalent Se(2)FeCu2Sn tetrahedra, corners with three equivalent Se(8)FeCu2Sn tetrahedra, and corners with four equivalent Se(1)FeCu2Sn tetrahedra. In the seventh Se site, Se(6) is bonded to one Cu(2), one Cu(3), one Cd(1), and one Sn(2) atom to form SeCdCu2Sn tetrahedra that share  a cornercorner with one Se(7)CdCu2Sn tetrahedra,  a cornercorner with one Se(8)FeCu2Sn tetrahedra, corners with two equivalent Se(3)CdCu2Sn tetrahedra, corners with two equivalent Se(4)CdCu2Sn tetrahedra, corners with two equivalent Se(5)CdCu2Sn tetrahedra, corners with two equivalent Se(6)CdCu2Sn tetrahedra, and corners with two equivalent Se(2)FeCu2Sn tetrahedra. In the eighth Se site, Se(7) is bonded to two equivalent Cu(3), one Cd(2), and one Sn(3) atom to form corner-sharing SeCdCu2Sn tetrahedra.