Lu2ReC2 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Lu sites. In the first Lu site, Lu(1) is bonded to two equivalent C(1) and three equivalent C(2) atoms to form a mixture of edge and corner-sharing LuC5 square pyramids. In the second Lu site, Lu(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent C(1) and two equivalent C(2) atoms. Re(1) is bonded in a distorted trigonal planar geometry to one C(2) and two equivalent C(1) atoms. There are two inequivalent C sites. In the first C site, C(1) is bonded to two equivalent Lu(1), two equivalent Lu(2), and two equivalent Re(1) atoms to form CLu4Re2 octahedra that share corners with two equivalent C(1)Lu4Re2 octahedra, corners with two equivalent C(2)Lu5Re octahedra, edges with two equivalent C(1)Lu4Re2 octahedra, and edges with five equivalent C(2)Lu5Re octahedra. The corner-sharing octahedral tilt angles range from 10-37°. In the second C site, C(2) is bonded to two equivalent Lu(2), three equivalent Lu(1), and one Re(1) atom to form CLu5Re octahedra that share corners with two equivalent C(1)Lu4Re2 octahedra, corners with four equivalent C(2)Lu5Re octahedra, edges with two equivalent C(2)Lu5Re octahedra, and edges with five equivalent C(1)Lu4Re2 octahedra. The corner-sharing octahedral tilt angles range from 2-37°.
Lu2ReC2 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Lu sites. In the first Lu site, Lu(1) is bonded to two equivalent C(1) and three equivalent C(2) atoms to form a mixture of edge and corner-sharing LuC5 square pyramids. There is one shorter (2.45 Å) and one longer (2.51 Å) Lu(1)-C(1) bond length. There are two shorter (2.50 Å) and one longer (2.53 Å) Lu(1)-C(2) bond length. In the second Lu site, Lu(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent C(1) and two equivalent C(2) atoms. Both Lu(2)-C(1) bond lengths are 2.51 Å. There is one shorter (2.47 Å) and one longer (2.55 Å) Lu(2)-C(2) bond length. Re(1) is bonded in a distorted trigonal planar geometry to one C(2) and two equivalent C(1) atoms. The Re(1)-C(2) bond length is 1.94 Å. There is one shorter (1.96 Å) and one longer (2.03 Å) Re(1)-C(1) bond length. There are two inequivalent C sites. In the first C site, C(1) is bonded to two equivalent Lu(1), two equivalent Lu(2), and two equivalent Re(1) atoms to form CLu4Re2 octahedra that share corners with two equivalent C(1)Lu4Re2 octahedra, corners with two equivalent C(2)Lu5Re octahedra, edges with two equivalent C(1)Lu4Re2 octahedra, and edges with five equivalent C(2)Lu5Re octahedra. The corner-sharing octahedral tilt angles range from 10-37°. In the second C site, C(2) is bonded to two equivalent Lu(2), three equivalent Lu(1), and one Re(1) atom to form CLu5Re octahedra that share corners with two equivalent C(1)Lu4Re2 octahedra, corners with four equivalent C(2)Lu5Re octahedra, edges with two equivalent C(2)Lu5Re octahedra, and edges with five equivalent C(1)Lu4Re2 octahedra. The corner-sharing octahedral tilt angles range from 2-37°.