Ce2ReC2 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a rectangular see-saw-like geometry to two equivalent C(1) and two equivalent C(2) atoms. In the second Ce site, Ce(2) is bonded to two equivalent C(2) and three equivalent C(1) atoms to form a mixture of distorted corner and edge-sharing CeC5 square pyramids. Re(1) is bonded in a distorted trigonal planar geometry to one C(1) and two equivalent C(2) atoms. There are two inequivalent C sites. In the first C site, C(1) is bonded to two equivalent Ce(1), three equivalent Ce(2), and one Re(1) atom to form CCe5Re octahedra that share corners with two equivalent C(2)Ce4Re2 octahedra, corners with four equivalent C(1)Ce5Re octahedra, edges with two equivalent C(1)Ce5Re octahedra, and edges with five equivalent C(2)Ce4Re2 octahedra. The corner-sharing octahedral tilt angles range from 5-41°. In the second C site, C(2) is bonded to two equivalent Ce(1), two equivalent Ce(2), and two equivalent Re(1) atoms to form CCe4Re2 octahedra that share corners with two equivalent C(2)Ce4Re2 octahedra, corners with two equivalent C(1)Ce5Re octahedra, edges with two equivalent C(2)Ce4Re2 octahedra, and edges with five equivalent C(1)Ce5Re octahedra. The corner-sharing octahedral tilt angles range from 8-41°.
Ce2ReC2 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a rectangular see-saw-like geometry to two equivalent C(1) and two equivalent C(2) atoms. There is one shorter (2.62 Å) and one longer (2.65 Å) Ce(1)-C(1) bond length. Both Ce(1)-C(2) bond lengths are 2.66 Å. In the second Ce site, Ce(2) is bonded to two equivalent C(2) and three equivalent C(1) atoms to form a mixture of distorted corner and edge-sharing CeC5 square pyramids. There is one shorter (2.59 Å) and one longer (2.67 Å) Ce(2)-C(2) bond length. There is one shorter (2.63 Å) and two longer (2.65 Å) Ce(2)-C(1) bond lengths. Re(1) is bonded in a distorted trigonal planar geometry to one C(1) and two equivalent C(2) atoms. The Re(1)-C(1) bond length is 1.96 Å. There is one shorter (1.96 Å) and one longer (2.01 Å) Re(1)-C(2) bond length. There are two inequivalent C sites. In the first C site, C(1) is bonded to two equivalent Ce(1), three equivalent Ce(2), and one Re(1) atom to form CCe5Re octahedra that share corners with two equivalent C(2)Ce4Re2 octahedra, corners with four equivalent C(1)Ce5Re octahedra, edges with two equivalent C(1)Ce5Re octahedra, and edges with five equivalent C(2)Ce4Re2 octahedra. The corner-sharing octahedral tilt angles range from 5-41°. In the second C site, C(2) is bonded to two equivalent Ce(1), two equivalent Ce(2), and two equivalent Re(1) atoms to form CCe4Re2 octahedra that share corners with two equivalent C(2)Ce4Re2 octahedra, corners with two equivalent C(1)Ce5Re octahedra, edges with two equivalent C(2)Ce4Re2 octahedra, and edges with five equivalent C(1)Ce5Re octahedra. The corner-sharing octahedral tilt angles range from 8-41°.