Ce(ReFe5)2 crystallizes in the orthorhombic Immm space group. Ce(1) is bonded in a 20-coordinate geometry to two equivalent Re(1), two equivalent Fe(4), four equivalent Fe(1), four equivalent Fe(2), and eight equivalent Fe(3) atoms. Re(1) is bonded in a 14-coordinate geometry to one Ce(1), one Re(1), two equivalent Fe(1), two equivalent Fe(2), four equivalent Fe(3), and four equivalent Fe(4) atoms. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 12-coordinate geometry to two equivalent Ce(1), two equivalent Re(1), two equivalent Fe(2), two equivalent Fe(4), and four equivalent Fe(3) atoms. In the second Fe site, Fe(2) is bonded in a 12-coordinate geometry to two equivalent Ce(1), two equivalent Re(1), two equivalent Fe(1), two equivalent Fe(4), and four equivalent Fe(3) atoms. In the third Fe site, Fe(3) is bonded to two equivalent Ce(1), two equivalent Re(1), two equivalent Fe(1), two equivalent Fe(2), two equivalent Fe(3), and two equivalent Fe(4) atoms to form a mixture of corner, edge, and face-sharing FeCe2Fe8Re2 cuboctahedra. In the fourth Fe site, Fe(4) is bonded in a 14-coordinate geometry to one Ce(1), four equivalent Re(1), one Fe(4), two equivalent Fe(1), two equivalent Fe(2), and four equivalent Fe(3) atoms.
Ce(ReFe5)2 crystallizes in the orthorhombic Immm space group. Ce(1) is bonded in a 20-coordinate geometry to two equivalent Re(1), two equivalent Fe(4), four equivalent Fe(1), four equivalent Fe(2), and eight equivalent Fe(3) atoms. Both Ce(1)-Re(1) bond lengths are 3.12 Å. Both Ce(1)-Fe(4) bond lengths are 3.06 Å. All Ce(1)-Fe(1) bond lengths are 3.00 Å. All Ce(1)-Fe(2) bond lengths are 3.09 Å. All Ce(1)-Fe(3) bond lengths are 3.27 Å. Re(1) is bonded in a 14-coordinate geometry to one Ce(1), one Re(1), two equivalent Fe(1), two equivalent Fe(2), four equivalent Fe(3), and four equivalent Fe(4) atoms. The Re(1)-Re(1) bond length is 2.47 Å. Both Re(1)-Fe(1) bond lengths are 2.69 Å. Both Re(1)-Fe(2) bond lengths are 2.59 Å. All Re(1)-Fe(3) bond lengths are 2.61 Å. All Re(1)-Fe(4) bond lengths are 2.91 Å. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 12-coordinate geometry to two equivalent Ce(1), two equivalent Re(1), two equivalent Fe(2), two equivalent Fe(4), and four equivalent Fe(3) atoms. Both Fe(1)-Fe(2) bond lengths are 2.76 Å. Both Fe(1)-Fe(4) bond lengths are 2.62 Å. All Fe(1)-Fe(3) bond lengths are 2.49 Å. In the second Fe site, Fe(2) is bonded in a 12-coordinate geometry to two equivalent Ce(1), two equivalent Re(1), two equivalent Fe(1), two equivalent Fe(4), and four equivalent Fe(3) atoms. Both Fe(2)-Fe(4) bond lengths are 2.63 Å. All Fe(2)-Fe(3) bond lengths are 2.44 Å. In the third Fe site, Fe(3) is bonded to two equivalent Ce(1), two equivalent Re(1), two equivalent Fe(1), two equivalent Fe(2), two equivalent Fe(3), and two equivalent Fe(4) atoms to form a mixture of corner, edge, and face-sharing FeCe2Fe8Re2 cuboctahedra. Both Fe(3)-Fe(3) bond lengths are 2.34 Å. Both Fe(3)-Fe(4) bond lengths are 2.64 Å. In the fourth Fe site, Fe(4) is bonded in a 14-coordinate geometry to one Ce(1), four equivalent Re(1), one Fe(4), two equivalent Fe(1), two equivalent Fe(2), and four equivalent Fe(3) atoms. The Fe(4)-Fe(4) bond length is 2.41 Å.