CePt2In7 crystallizes in the tetragonal I4/mmm space group. Ce(1) is bonded to four equivalent In(1) and eight equivalent In(3) atoms to form CeIn12 cuboctahedra that share corners with four equivalent Ce(1)In12 cuboctahedra, faces with four equivalent Ce(1)In12 cuboctahedra, and faces with four equivalent In(1)Ce4In8 cuboctahedra. Pt(1) is bonded in a body-centered cubic geometry to four equivalent In(2) and four equivalent In(3) atoms. There are three inequivalent In sites. In the first In site, In(1) is bonded to four equivalent Ce(1) and eight equivalent In(3) atoms to form distorted InCe4In8 cuboctahedra that share corners with four equivalent In(1)Ce4In8 cuboctahedra, faces with four equivalent Ce(1)In12 cuboctahedra, and faces with four equivalent In(1)Ce4In8 cuboctahedra. In the second In site, In(2) is bonded to four equivalent Pt(1) atoms to form a mixture of edge and corner-sharing InPt4 tetrahedra. In the third In site, In(3) is bonded in a 4-coordinate geometry to two equivalent Ce(1), two equivalent Pt(1), and two equivalent In(1) atoms.
CePt2In7 crystallizes in the tetragonal I4/mmm space group. Ce(1) is bonded to four equivalent In(1) and eight equivalent In(3) atoms to form CeIn12 cuboctahedra that share corners with four equivalent Ce(1)In12 cuboctahedra, faces with four equivalent Ce(1)In12 cuboctahedra, and faces with four equivalent In(1)Ce4In8 cuboctahedra. All Ce(1)-In(1) bond lengths are 3.30 Å. All Ce(1)-In(3) bond lengths are 3.27 Å. Pt(1) is bonded in a body-centered cubic geometry to four equivalent In(2) and four equivalent In(3) atoms. All Pt(1)-In(2) bond lengths are 2.85 Å. All Pt(1)-In(3) bond lengths are 2.77 Å. There are three inequivalent In sites. In the first In site, In(1) is bonded to four equivalent Ce(1) and eight equivalent In(3) atoms to form distorted InCe4In8 cuboctahedra that share corners with four equivalent In(1)Ce4In8 cuboctahedra, faces with four equivalent Ce(1)In12 cuboctahedra, and faces with four equivalent In(1)Ce4In8 cuboctahedra. All In(1)-In(3) bond lengths are 3.27 Å. In the second In site, In(2) is bonded to four equivalent Pt(1) atoms to form a mixture of edge and corner-sharing InPt4 tetrahedra. In the third In site, In(3) is bonded in a 4-coordinate geometry to two equivalent Ce(1), two equivalent Pt(1), and two equivalent In(1) atoms.