Ag3Sn is beta Cu3Ti structured and crystallizes in the orthorhombic Pmmn space group. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to eight equivalent Ag(2) and four equivalent Sn(1) atoms to form AgAg8Sn4 cuboctahedra that share corners with two equivalent Ag(1)Ag8Sn4 cuboctahedra, corners with eight equivalent Ag(2)Ag8Sn4 cuboctahedra, corners with eight equivalent Sn(1)Ag12 cuboctahedra, edges with six equivalent Ag(1)Ag8Sn4 cuboctahedra, edges with twelve equivalent Ag(2)Ag8Sn4 cuboctahedra, faces with six equivalent Ag(1)Ag8Sn4 cuboctahedra, faces with six equivalent Sn(1)Ag12 cuboctahedra, and faces with eight equivalent Ag(2)Ag8Sn4 cuboctahedra. In the second Ag site, Ag(2) is bonded to four equivalent Ag(1), four equivalent Ag(2), and four equivalent Sn(1) atoms to form AgAg8Sn4 cuboctahedra that share corners with four equivalent Ag(1)Ag8Sn4 cuboctahedra, corners with four equivalent Sn(1)Ag12 cuboctahedra, corners with ten equivalent Ag(2)Ag8Sn4 cuboctahedra, edges with six equivalent Ag(1)Ag8Sn4 cuboctahedra, edges with six equivalent Ag(2)Ag8Sn4 cuboctahedra, edges with six equivalent Sn(1)Ag12 cuboctahedra, faces with four equivalent Ag(1)Ag8Sn4 cuboctahedra, faces with four equivalent Sn(1)Ag12 cuboctahedra, and faces with twelve equivalent Ag(2)Ag8Sn4 cuboctahedra. Sn(1) is bonded to four equivalent Ag(1) and eight equivalent Ag(2) atoms to form SnAg12 cuboctahedra that share corners with two equivalent Sn(1)Ag12 cuboctahedra, corners with eight equivalent Ag(1)Ag8Sn4 cuboctahedra, corners with eight equivalent Ag(2)Ag8Sn4 cuboctahedra, edges with six equivalent Sn(1)Ag12 cuboctahedra, edges with twelve equivalent Ag(2)Ag8Sn4 cuboctahedra, faces with six equivalent Ag(1)Ag8Sn4 cuboctahedra, faces with six equivalent Sn(1)Ag12 cuboctahedra, and faces with eight equivalent Ag(2)Ag8Sn4 cuboctahedra.
Ag3Sn is beta Cu3Ti structured and crystallizes in the orthorhombic Pmmn space group. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to eight equivalent Ag(2) and four equivalent Sn(1) atoms to form AgAg8Sn4 cuboctahedra that share corners with two equivalent Ag(1)Ag8Sn4 cuboctahedra, corners with eight equivalent Ag(2)Ag8Sn4 cuboctahedra, corners with eight equivalent Sn(1)Ag12 cuboctahedra, edges with six equivalent Ag(1)Ag8Sn4 cuboctahedra, edges with twelve equivalent Ag(2)Ag8Sn4 cuboctahedra, faces with six equivalent Ag(1)Ag8Sn4 cuboctahedra, faces with six equivalent Sn(1)Ag12 cuboctahedra, and faces with eight equivalent Ag(2)Ag8Sn4 cuboctahedra. There are a spread of Ag(1)-Ag(2) bond distances ranging from 2.95-3.06 Å. There are two shorter (2.99 Å) and two longer (3.03 Å) Ag(1)-Sn(1) bond lengths. In the second Ag site, Ag(2) is bonded to four equivalent Ag(1), four equivalent Ag(2), and four equivalent Sn(1) atoms to form AgAg8Sn4 cuboctahedra that share corners with four equivalent Ag(1)Ag8Sn4 cuboctahedra, corners with four equivalent Sn(1)Ag12 cuboctahedra, corners with ten equivalent Ag(2)Ag8Sn4 cuboctahedra, edges with six equivalent Ag(1)Ag8Sn4 cuboctahedra, edges with six equivalent Ag(2)Ag8Sn4 cuboctahedra, edges with six equivalent Sn(1)Ag12 cuboctahedra, faces with four equivalent Ag(1)Ag8Sn4 cuboctahedra, faces with four equivalent Sn(1)Ag12 cuboctahedra, and faces with twelve equivalent Ag(2)Ag8Sn4 cuboctahedra. There are a spread of Ag(2)-Ag(2) bond distances ranging from 2.94-3.04 Å. There are a spread of Ag(2)-Sn(1) bond distances ranging from 2.95-3.04 Å. Sn(1) is bonded to four equivalent Ag(1) and eight equivalent Ag(2) atoms to form SnAg12 cuboctahedra that share corners with two equivalent Sn(1)Ag12 cuboctahedra, corners with eight equivalent Ag(1)Ag8Sn4 cuboctahedra, corners with eight equivalent Ag(2)Ag8Sn4 cuboctahedra, edges with six equivalent Sn(1)Ag12 cuboctahedra, edges with twelve equivalent Ag(2)Ag8Sn4 cuboctahedra, faces with six equivalent Ag(1)Ag8Sn4 cuboctahedra, faces with six equivalent Sn(1)Ag12 cuboctahedra, and faces with eight equivalent Ag(2)Ag8Sn4 cuboctahedra.