MnCd4S5 is Enargite-like structured and crystallizes in the monoclinic Cm space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one S(1), one S(8), and two equivalent S(4) atoms to form MnS4 tetrahedra that share  a cornercorner with one Cd(1)S4 tetrahedra,  a cornercorner with one Cd(5)S4 tetrahedra, corners with two equivalent Mn(1)S4 tetrahedra, corners with two equivalent Cd(3)S4 tetrahedra, corners with two equivalent Cd(4)S4 tetrahedra, corners with two equivalent Cd(6)S4 tetrahedra, and corners with two equivalent Cd(7)S4 tetrahedra. In the second Mn site, Mn(2) is bonded to one S(2), one S(9), and two equivalent S(5) atoms to form MnS4 tetrahedra that share  a cornercorner with one Cd(1)S4 tetrahedra,  a cornercorner with one Cd(2)S4 tetrahedra, corners with two equivalent Mn(2)S4 tetrahedra, corners with two equivalent Cd(4)S4 tetrahedra, corners with two equivalent Cd(5)S4 tetrahedra, corners with two equivalent Cd(7)S4 tetrahedra, and corners with two equivalent Cd(8)S4 tetrahedra. There are eight inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one S(1), one S(9), and two equivalent S(6) atoms to form CdS4 tetrahedra that share  a cornercorner with one Mn(1)S4 tetrahedra,  a cornercorner with one Mn(2)S4 tetrahedra, corners with two equivalent Cd(1)S4 tetrahedra, corners with two equivalent Cd(3)S4 tetrahedra, corners with two equivalent Cd(4)S4 tetrahedra, corners with two equivalent Cd(6)S4 tetrahedra, and corners with two equivalent Cd(7)S4 tetrahedra. In the second Cd site, Cd(2) is bonded to one S(10), one S(2), and two equivalent S(7) atoms to form CdS4 tetrahedra that share  a cornercorner with one Mn(2)S4 tetrahedra,  a cornercorner with one Cd(6)S4 tetrahedra, corners with two equivalent Cd(2)S4 tetrahedra, corners with two equivalent Cd(4)S4 tetrahedra, corners with two equivalent Cd(5)S4 tetrahedra, corners with two equivalent Cd(7)S4 tetrahedra, and corners with two equivalent Cd(8)S4 tetrahedra. In the third Cd site, Cd(3) is bonded to one S(3), one S(6), and two equivalent S(8) atoms to form CdS4 tetrahedra that share  a cornercorner with one Cd(6)S4 tetrahedra,  a cornercorner with one Cd(7)S4 tetrahedra, corners with two equivalent Mn(1)S4 tetrahedra, corners with two equivalent Cd(1)S4 tetrahedra, corners with two equivalent Cd(3)S4 tetrahedra, corners with two equivalent Cd(5)S4 tetrahedra, and corners with two equivalent Cd(8)S4 tetrahedra. In the fourth Cd site, Cd(4) is bonded to one S(4), one S(7), and two equivalent S(9) atoms to form CdS4 tetrahedra that share  a cornercorner with one Cd(7)S4 tetrahedra,  a cornercorner with one Cd(8)S4 tetrahedra, corners with two equivalent Mn(1)S4 tetrahedra, corners with two equivalent Mn(2)S4 tetrahedra, corners with two equivalent Cd(1)S4 tetrahedra, corners with two equivalent Cd(2)S4 tetrahedra, and corners with two equivalent Cd(4)S4 tetrahedra. In the fifth Cd site, Cd(5) is bonded to one S(5), one S(8), and two equivalent S(10) atoms to form CdS4 tetrahedra that share  a cornercorner with one Mn(1)S4 tetrahedra,  a cornercorner with one Cd(8)S4 tetrahedra, corners with two equivalent Mn(2)S4 tetrahedra, corners with two equivalent Cd(2)S4 tetrahedra, corners with two equivalent Cd(3)S4 tetrahedra, corners with two equivalent Cd(5)S4 tetrahedra, and corners with two equivalent Cd(6)S4 tetrahedra. In the sixth Cd site, Cd(6) is bonded to one S(10), one S(3), and two equivalent S(1) atoms to form CdS4 tetrahedra that share  a cornercorner with one Cd(2)S4 tetrahedra,  a cornercorner with one Cd(3)S4 tetrahedra, corners with two equivalent Mn(1)S4 tetrahedra, corners with two equivalent Cd(1)S4 tetrahedra, corners with two equivalent Cd(5)S4 tetrahedra, corners with two equivalent Cd(6)S4 tetrahedra, and corners with two equivalent Cd(8)S4 tetrahedra. In the seventh Cd site, Cd(7) is bonded to one S(4), one S(6), and two equivalent S(2) atoms to form CdS4 tetrahedra that share  a cornercorner with one Cd(3)S4 tetrahedra,  a cornercorner with one Cd(4)S4 tetrahedra, corners with two equivalent Mn(1)S4 tetrahedra, corners with two equivalent Mn(2)S4 tetrahedra, corners with two equivalent Cd(1)S4 tetrahedra, corners with two equivalent Cd(2)S4 tetrahedra, and corners with two equivalent Cd(7)S4 tetrahedra. In the eighth Cd site, Cd(8) is bonded to one S(5), one S(7), and two equivalent S(3) atoms to form CdS4 tetrahedra that share  a cornercorner with one Cd(4)S4 tetrahedra,  a cornercorner with one Cd(5)S4 tetrahedra, corners with two equivalent Mn(2)S4 tetrahedra, corners with two equivalent Cd(2)S4 tetrahedra, corners with two equivalent Cd(3)S4 tetrahedra, corners with two equivalent Cd(6)S4 tetrahedra, and corners with two equivalent Cd(8)S4 tetrahedra. There are ten inequivalent S sites. In the first S site, S(1) is bonded to one Mn(1), one Cd(1), and two equivalent Cd(6) atoms to form SMnCd3 tetrahedra that share  a cornercorner with one S(8)MnCd3 tetrahedra,  a cornercorner with one S(9)MnCd3 tetrahedra, corners with two equivalent S(10)Cd4 tetrahedra, corners with two equivalent S(3)Cd4 tetrahedra, corners with two equivalent S(6)Cd4 tetrahedra, corners with two equivalent S(4)Mn2Cd2 tetrahedra, and corners with two equivalent S(1)MnCd3 tetrahedra. In the second S site, S(2) is bonded to one Mn(2), one Cd(2), and two equivalent Cd(7) atoms to form SMnCd3 tetrahedra that share  a cornercorner with one S(10)Cd4 tetrahedra,  a cornercorner with one S(9)MnCd3 tetrahedra, corners with two equivalent S(6)Cd4 tetrahedra, corners with two equivalent S(7)Cd4 tetrahedra, corners with two equivalent S(4)Mn2Cd2 tetrahedra, corners with two equivalent S(5)Mn2Cd2 tetrahedra, and corners with two equivalent S(2)MnCd3 tetrahedra. In the third S site, S(3) is bonded to one Cd(3), one Cd(6), and two equivalent Cd(8) atoms to form SCd4 tetrahedra that share  a cornercorner with one S(10)Cd4 tetrahedra,  a cornercorner with one S(6)Cd4 tetrahedra, corners with two equivalent S(3)Cd4 tetrahedra, corners with two equivalent S(7)Cd4 tetrahedra, corners with two equivalent S(5)Mn2Cd2 tetrahedra, corners with two equivalent S(1)MnCd3 tetrahedra, and corners with two equivalent S(8)MnCd3 tetrahedra. In the fourth S site, S(4) is bonded to two equivalent Mn(1), one Cd(4), and one Cd(7) atom to form SMn2Cd2 tetrahedra that share  a cornercorner with one S(6)Cd4 tetrahedra,  a cornercorner with one S(7)Cd4 tetrahedra, corners with two equivalent S(4)Mn2Cd2 tetrahedra, corners with two equivalent S(1)MnCd3 tetrahedra, corners with two equivalent S(2)MnCd3 tetrahedra, corners with two equivalent S(8)MnCd3 tetrahedra, and corners with two equivalent S(9)MnCd3 tetrahedra. In the fifth S site, S(5) is bonded to two equivalent Mn(2), one Cd(5), and one Cd(8) atom to form SMn2Cd2 tetrahedra that share  a cornercorner with one S(7)Cd4 tetrahedra,  a cornercorner with one S(8)MnCd3 tetrahedra, corners with two equivalent S(10)Cd4 tetrahedra, corners with two equivalent S(3)Cd4 tetrahedra, corners with two equivalent S(5)Mn2Cd2 tetrahedra, corners with two equivalent S(2)MnCd3 tetrahedra, and corners with two equivalent S(9)MnCd3 tetrahedra. In the sixth S site, S(6) is bonded to one Cd(3), one Cd(7), and two equivalent Cd(1) atoms to form SCd4 tetrahedra that share  a cornercorner with one S(3)Cd4 tetrahedra,  a cornercorner with one S(4)Mn2Cd2 tetrahedra, corners with two equivalent S(6)Cd4 tetrahedra, corners with two equivalent S(1)MnCd3 tetrahedra, corners with two equivalent S(2)MnCd3 tetrahedra, corners with two equivalent S(8)MnCd3 tetrahedra, and corners with two equivalent S(9)MnCd3 tetrahedra. In the seventh S site, S(7) is bonded to one Cd(4), one Cd(8), and two equivalent Cd(2) atoms to form SCd4 tetrahedra that share  a cornercorner with one S(4)Mn2Cd2 tetrahedra,  a cornercorner with one S(5)Mn2Cd2 tetrahedra, corners with two equivalent S(10)Cd4 tetrahedra, corners with two equivalent S(3)Cd4 tetrahedra, corners with two equivalent S(7)Cd4 tetrahedra, corners with two equivalent S(2)MnCd3 tetrahedra, and corners with two equivalent S(9)MnCd3 tetrahedra. In the eighth S site, S(8) is bonded to one Mn(1), one Cd(5), and two equivalent Cd(3) atoms to form SMnCd3 tetrahedra that share  a cornercorner with one S(5)Mn2Cd2 tetrahedra,  a cornercorner with one S(1)MnCd3 tetrahedra, corners with two equivalent S(10)Cd4 tetrahedra, corners with two equivalent S(3)Cd4 tetrahedra, corners with two equivalent S(6)Cd4 tetrahedra, corners with two equivalent S(4)Mn2Cd2 tetrahedra, and corners with two equivalent S(8)MnCd3 tetrahedra. In the ninth S site, S(9) is bonded to one Mn(2), one Cd(1), and two equivalent Cd(4) atoms to form SMnCd3 tetrahedra that share  a cornercorner with one S(1)MnCd3 tetrahedra,  a cornercorner with one S(2)MnCd3 tetrahedra, corners with two equivalent S(6)Cd4 tetrahedra, corners with two equivalent S(7)Cd4 tetrahedra, corners with two equivalent S(4)Mn2Cd2 tetrahedra, corners with two equivalent S(5)Mn2Cd2 tetrahedra, and corners with two equivalent S(9)MnCd3 tetrahedra. In the tenth S site, S(10) is bonded to one Cd(2), one Cd(6), and two equivalent Cd(5) atoms to form SCd4 tetrahedra that share  a cornercorner with one S(3)Cd4 tetrahedra,  a cornercorner with one S(2)MnCd3 tetrahedra, corners with two equivalent S(10)Cd4 tetrahedra, corners with two equivalent S(7)Cd4 tetrahedra, corners with two equivalent S(5)Mn2Cd2 tetrahedra, corners with two equivalent S(1)MnCd3 tetrahedra, and corners with two equivalent S(8)MnCd3 tetrahedra.
MnCd4S5 is Enargite-like structured and crystallizes in the monoclinic Cm space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one S(1), one S(8), and two equivalent S(4) atoms to form MnS4 tetrahedra that share  a cornercorner with one Cd(1)S4 tetrahedra,  a cornercorner with one Cd(5)S4 tetrahedra, corners with two equivalent Mn(1)S4 tetrahedra, corners with two equivalent Cd(3)S4 tetrahedra, corners with two equivalent Cd(4)S4 tetrahedra, corners with two equivalent Cd(6)S4 tetrahedra, and corners with two equivalent Cd(7)S4 tetrahedra. The Mn(1)-S(1) bond length is 2.42 Å. The Mn(1)-S(8) bond length is 2.43 Å. Both Mn(1)-S(4) bond lengths are 2.47 Å. In the second Mn site, Mn(2) is bonded to one S(2), one S(9), and two equivalent S(5) atoms to form MnS4 tetrahedra that share  a cornercorner with one Cd(1)S4 tetrahedra,  a cornercorner with one Cd(2)S4 tetrahedra, corners with two equivalent Mn(2)S4 tetrahedra, corners with two equivalent Cd(4)S4 tetrahedra, corners with two equivalent Cd(5)S4 tetrahedra, corners with two equivalent Cd(7)S4 tetrahedra, and corners with two equivalent Cd(8)S4 tetrahedra. The Mn(2)-S(2) bond length is 2.43 Å. The Mn(2)-S(9) bond length is 2.43 Å. Both Mn(2)-S(5) bond lengths are 2.46 Å. There are eight inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one S(1), one S(9), and two equivalent S(6) atoms to form CdS4 tetrahedra that share  a cornercorner with one Mn(1)S4 tetrahedra,  a cornercorner with one Mn(2)S4 tetrahedra, corners with two equivalent Cd(1)S4 tetrahedra, corners with two equivalent Cd(3)S4 tetrahedra, corners with two equivalent Cd(4)S4 tetrahedra, corners with two equivalent Cd(6)S4 tetrahedra, and corners with two equivalent Cd(7)S4 tetrahedra. The Cd(1)-S(1) bond length is 2.58 Å. The Cd(1)-S(9) bond length is 2.57 Å. Both Cd(1)-S(6) bond lengths are 2.56 Å. In the second Cd site, Cd(2) is bonded to one S(10), one S(2), and two equivalent S(7) atoms to form CdS4 tetrahedra that share  a cornercorner with one Mn(2)S4 tetrahedra,  a cornercorner with one Cd(6)S4 tetrahedra, corners with two equivalent Cd(2)S4 tetrahedra, corners with two equivalent Cd(4)S4 tetrahedra, corners with two equivalent Cd(5)S4 tetrahedra, corners with two equivalent Cd(7)S4 tetrahedra, and corners with two equivalent Cd(8)S4 tetrahedra. The Cd(2)-S(10) bond length is 2.55 Å. The Cd(2)-S(2) bond length is 2.58 Å. Both Cd(2)-S(7) bond lengths are 2.56 Å. In the third Cd site, Cd(3) is bonded to one S(3), one S(6), and two equivalent S(8) atoms to form CdS4 tetrahedra that share  a cornercorner with one Cd(6)S4 tetrahedra,  a cornercorner with one Cd(7)S4 tetrahedra, corners with two equivalent Mn(1)S4 tetrahedra, corners with two equivalent Cd(1)S4 tetrahedra, corners with two equivalent Cd(3)S4 tetrahedra, corners with two equivalent Cd(5)S4 tetrahedra, and corners with two equivalent Cd(8)S4 tetrahedra. The Cd(3)-S(3) bond length is 2.58 Å. The Cd(3)-S(6) bond length is 2.55 Å. Both Cd(3)-S(8) bond lengths are 2.57 Å. In the fourth Cd site, Cd(4) is bonded to one S(4), one S(7), and two equivalent S(9) atoms to form CdS4 tetrahedra that share  a cornercorner with one Cd(7)S4 tetrahedra,  a cornercorner with one Cd(8)S4 tetrahedra, corners with two equivalent Mn(1)S4 tetrahedra, corners with two equivalent Mn(2)S4 tetrahedra, corners with two equivalent Cd(1)S4 tetrahedra, corners with two equivalent Cd(2)S4 tetrahedra, and corners with two equivalent Cd(4)S4 tetrahedra. The Cd(4)-S(4) bond length is 2.60 Å. The Cd(4)-S(7) bond length is 2.56 Å. Both Cd(4)-S(9) bond lengths are 2.57 Å. In the fifth Cd site, Cd(5) is bonded to one S(5), one S(8), and two equivalent S(10) atoms to form CdS4 tetrahedra that share  a cornercorner with one Mn(1)S4 tetrahedra,  a cornercorner with one Cd(8)S4 tetrahedra, corners with two equivalent Mn(2)S4 tetrahedra, corners with two equivalent Cd(2)S4 tetrahedra, corners with two equivalent Cd(3)S4 tetrahedra, corners with two equivalent Cd(5)S4 tetrahedra, and corners with two equivalent Cd(6)S4 tetrahedra. The Cd(5)-S(5) bond length is 2.59 Å. The Cd(5)-S(8) bond length is 2.57 Å. Both Cd(5)-S(10) bond lengths are 2.56 Å. In the sixth Cd site, Cd(6) is bonded to one S(10), one S(3), and two equivalent S(1) atoms to form CdS4 tetrahedra that share  a cornercorner with one Cd(2)S4 tetrahedra,  a cornercorner with one Cd(3)S4 tetrahedra, corners with two equivalent Mn(1)S4 tetrahedra, corners with two equivalent Cd(1)S4 tetrahedra, corners with two equivalent Cd(5)S4 tetrahedra, corners with two equivalent Cd(6)S4 tetrahedra, and corners with two equivalent Cd(8)S4 tetrahedra. The Cd(6)-S(10) bond length is 2.57 Å. The Cd(6)-S(3) bond length is 2.58 Å. Both Cd(6)-S(1) bond lengths are 2.57 Å. In the seventh Cd site, Cd(7) is bonded to one S(4), one S(6), and two equivalent S(2) atoms to form CdS4 tetrahedra that share  a cornercorner with one Cd(3)S4 tetrahedra,  a cornercorner with one Cd(4)S4 tetrahedra, corners with two equivalent Mn(1)S4 tetrahedra, corners with two equivalent Mn(2)S4 tetrahedra, corners with two equivalent Cd(1)S4 tetrahedra, corners with two equivalent Cd(2)S4 tetrahedra, and corners with two equivalent Cd(7)S4 tetrahedra. The Cd(7)-S(4) bond length is 2.59 Å. The Cd(7)-S(6) bond length is 2.58 Å. Both Cd(7)-S(2) bond lengths are 2.58 Å. In the eighth Cd site, Cd(8) is bonded to one S(5), one S(7), and two equivalent S(3) atoms to form CdS4 tetrahedra that share  a cornercorner with one Cd(4)S4 tetrahedra,  a cornercorner with one Cd(5)S4 tetrahedra, corners with two equivalent Mn(2)S4 tetrahedra, corners with two equivalent Cd(2)S4 tetrahedra, corners with two equivalent Cd(3)S4 tetrahedra, corners with two equivalent Cd(6)S4 tetrahedra, and corners with two equivalent Cd(8)S4 tetrahedra. The Cd(8)-S(5) bond length is 2.58 Å. The Cd(8)-S(7) bond length is 2.58 Å. Both Cd(8)-S(3) bond lengths are 2.57 Å. There are ten inequivalent S sites. In the first S site, S(1) is bonded to one Mn(1), one Cd(1), and two equivalent Cd(6) atoms to form SMnCd3 tetrahedra that share  a cornercorner with one S(8)MnCd3 tetrahedra,  a cornercorner with one S(9)MnCd3 tetrahedra, corners with two equivalent S(10)Cd4 tetrahedra, corners with two equivalent S(3)Cd4 tetrahedra, corners with two equivalent S(6)Cd4 tetrahedra, corners with two equivalent S(4)Mn2Cd2 tetrahedra, and corners with two equivalent S(1)MnCd3 tetrahedra. In the second S site, S(2) is bonded to one Mn(2), one Cd(2), and two equivalent Cd(7) atoms to form SMnCd3 tetrahedra that share  a cornercorner with one S(10)Cd4 tetrahedra,  a cornercorner with one S(9)MnCd3 tetrahedra, corners with two equivalent S(6)Cd4 tetrahedra, corners with two equivalent S(7)Cd4 tetrahedra, corners with two equivalent S(4)Mn2Cd2 tetrahedra, corners with two equivalent S(5)Mn2Cd2 tetrahedra, and corners with two equivalent S(2)MnCd3 tetrahedra. In the third S site, S(3) is bonded to one Cd(3), one Cd(6), and two equivalent Cd(8) atoms to form SCd4 tetrahedra that share  a cornercorner with one S(10)Cd4 tetrahedra,  a cornercorner with one S(6)Cd4 tetrahedra, corners with two equivalent S(3)Cd4 tetrahedra, corners with two equivalent S(7)Cd4 tetrahedra, corners with two equivalent S(5)Mn2Cd2 tetrahedra, corners with two equivalent S(1)MnCd3 tetrahedra, and corners with two equivalent S(8)MnCd3 tetrahedra. In the fourth S site, S(4) is bonded to two equivalent Mn(1), one Cd(4), and one Cd(7) atom to form SMn2Cd2 tetrahedra that share  a cornercorner with one S(6)Cd4 tetrahedra,  a cornercorner with one S(7)Cd4 tetrahedra, corners with two equivalent S(4)Mn2Cd2 tetrahedra, corners with two equivalent S(1)MnCd3 tetrahedra, corners with two equivalent S(2)MnCd3 tetrahedra, corners with two equivalent S(8)MnCd3 tetrahedra, and corners with two equivalent S(9)MnCd3 tetrahedra. In the fifth S site, S(5) is bonded to two equivalent Mn(2), one Cd(5), and one Cd(8) atom to form SMn2Cd2 tetrahedra that share  a cornercorner with one S(7)Cd4 tetrahedra,  a cornercorner with one S(8)MnCd3 tetrahedra, corners with two equivalent S(10)Cd4 tetrahedra, corners with two equivalent S(3)Cd4 tetrahedra, corners with two equivalent S(5)Mn2Cd2 tetrahedra, corners with two equivalent S(2)MnCd3 tetrahedra, and corners with two equivalent S(9)MnCd3 tetrahedra. In the sixth S site, S(6) is bonded to one Cd(3), one Cd(7), and two equivalent Cd(1) atoms to form SCd4 tetrahedra that share  a cornercorner with one S(3)Cd4 tetrahedra,  a cornercorner with one S(4)Mn2Cd2 tetrahedra, corners with two equivalent S(6)Cd4 tetrahedra, corners with two equivalent S(1)MnCd3 tetrahedra, corners with two equivalent S(2)MnCd3 tetrahedra, corners with two equivalent S(8)MnCd3 tetrahedra, and corners with two equivalent S(9)MnCd3 tetrahedra. In the seventh S site, S(7) is bonded to one Cd(4), one Cd(8), and two equivalent Cd(2) atoms to form SCd4 tetrahedra that share  a cornercorner with one S(4)Mn2Cd2 tetrahedra,  a cornercorner with one S(5)Mn2Cd2 tetrahedra, corners with two equivalent S(10)Cd4 tetrahedra, corners with two equivalent S(3)Cd4 tetrahedra, corners with two equivalent S(7)Cd4 tetrahedra, corners with two equivalent S(2)MnCd3 tetrahedra, and corners with two equivalent S(9)MnCd3 tetrahedra. In the eighth S site, S(8) is bonded to one Mn(1), one Cd(5), and two equivalent Cd(3) atoms to form SMnCd3 tetrahedra that share  a cornercorner with one S(5)Mn2Cd2 tetrahedra,  a cornercorner with one S(1)MnCd3 tetrahedra, corners with two equivalent S(10)Cd4 tetrahedra, corners with two equivalent S(3)Cd4 tetrahedra, corners with two equivalent S(6)Cd4 tetrahedra, corners with two equivalent S(4)Mn2Cd2 tetrahedra, and corners with two equivalent S(8)MnCd3 tetrahedra. In the ninth S site, S(9) is bonded to one Mn(2), one Cd(1), and two equivalent Cd(4) atoms to form SMnCd3 tetrahedra that share  a cornercorner with one S(1)MnCd3 tetrahedra,  a cornercorner with one S(2)MnCd3 tetrahedra, corners with two equivalent S(6)Cd4 tetrahedra, corners with two equivalent S(7)Cd4 tetrahedra, corners with two equivalent S(4)Mn2Cd2 tetrahedra, corners with two equivalent S(5)Mn2Cd2 tetrahedra, and corners with two equivalent S(9)MnCd3 tetrahedra. In the tenth S site, S(10) is bonded to one Cd(2), one Cd(6), and two equivalent Cd(5) atoms to form SCd4 tetrahedra that share  a cornercorner with one S(3)Cd4 tetrahedra,  a cornercorner with one S(2)MnCd3 tetrahedra, corners with two equivalent S(10)Cd4 tetrahedra, corners with two equivalent S(7)Cd4 tetrahedra, corners with two equivalent S(5)Mn2Cd2 tetrahedra, corners with two equivalent S(1)MnCd3 tetrahedra, and corners with two equivalent S(8)MnCd3 tetrahedra.