MnSn3 is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. Mn(1) is bonded to four equivalent Sn(2) and eight equivalent Sn(1) atoms to form MnSn12 cuboctahedra that share corners with four equivalent Mn(1)Sn12 cuboctahedra, corners with eight equivalent Sn(2)Mn4Sn8 cuboctahedra, edges with eight equivalent Mn(1)Sn12 cuboctahedra, edges with sixteen equivalent Sn(1)Mn4Sn8 cuboctahedra, faces with four equivalent Mn(1)Sn12 cuboctahedra, faces with six equivalent Sn(2)Mn4Sn8 cuboctahedra, and faces with eight equivalent Sn(1)Mn4Sn8 cuboctahedra. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to four equivalent Mn(1), four equivalent Sn(1), and four equivalent Sn(2) atoms to form distorted SnMn4Sn8 cuboctahedra that share corners with twelve equivalent Sn(1)Mn4Sn8 cuboctahedra, edges with eight equivalent Mn(1)Sn12 cuboctahedra, edges with eight equivalent Sn(1)Mn4Sn8 cuboctahedra, edges with eight equivalent Sn(2)Mn4Sn8 cuboctahedra, faces with four equivalent Mn(1)Sn12 cuboctahedra, faces with four equivalent Sn(2)Mn4Sn8 cuboctahedra, and faces with ten equivalent Sn(1)Mn4Sn8 cuboctahedra. In the second Sn site, Sn(2) is bonded to four equivalent Mn(1) and eight equivalent Sn(1) atoms to form distorted SnMn4Sn8 cuboctahedra that share corners with four equivalent Sn(2)Mn4Sn8 cuboctahedra, corners with eight equivalent Mn(1)Sn12 cuboctahedra, edges with eight equivalent Sn(2)Mn4Sn8 cuboctahedra, edges with sixteen equivalent Sn(1)Mn4Sn8 cuboctahedra, faces with four equivalent Sn(2)Mn4Sn8 cuboctahedra, faces with six equivalent Mn(1)Sn12 cuboctahedra, and faces with eight equivalent Sn(1)Mn4Sn8 cuboctahedra.
MnSn3 is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. Mn(1) is bonded to four equivalent Sn(2) and eight equivalent Sn(1) atoms to form MnSn12 cuboctahedra that share corners with four equivalent Mn(1)Sn12 cuboctahedra, corners with eight equivalent Sn(2)Mn4Sn8 cuboctahedra, edges with eight equivalent Mn(1)Sn12 cuboctahedra, edges with sixteen equivalent Sn(1)Mn4Sn8 cuboctahedra, faces with four equivalent Mn(1)Sn12 cuboctahedra, faces with six equivalent Sn(2)Mn4Sn8 cuboctahedra, and faces with eight equivalent Sn(1)Mn4Sn8 cuboctahedra. All Mn(1)-Sn(2) bond lengths are 3.20 Å. All Mn(1)-Sn(1) bond lengths are 3.30 Å. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to four equivalent Mn(1), four equivalent Sn(1), and four equivalent Sn(2) atoms to form distorted SnMn4Sn8 cuboctahedra that share corners with twelve equivalent Sn(1)Mn4Sn8 cuboctahedra, edges with eight equivalent Mn(1)Sn12 cuboctahedra, edges with eight equivalent Sn(1)Mn4Sn8 cuboctahedra, edges with eight equivalent Sn(2)Mn4Sn8 cuboctahedra, faces with four equivalent Mn(1)Sn12 cuboctahedra, faces with four equivalent Sn(2)Mn4Sn8 cuboctahedra, and faces with ten equivalent Sn(1)Mn4Sn8 cuboctahedra. All Sn(1)-Sn(1) bond lengths are 3.20 Å. All Sn(1)-Sn(2) bond lengths are 3.30 Å. In the second Sn site, Sn(2) is bonded to four equivalent Mn(1) and eight equivalent Sn(1) atoms to form distorted SnMn4Sn8 cuboctahedra that share corners with four equivalent Sn(2)Mn4Sn8 cuboctahedra, corners with eight equivalent Mn(1)Sn12 cuboctahedra, edges with eight equivalent Sn(2)Mn4Sn8 cuboctahedra, edges with sixteen equivalent Sn(1)Mn4Sn8 cuboctahedra, faces with four equivalent Sn(2)Mn4Sn8 cuboctahedra, faces with six equivalent Mn(1)Sn12 cuboctahedra, and faces with eight equivalent Sn(1)Mn4Sn8 cuboctahedra.