Gd2Re2Si2C crystallizes in the monoclinic C2/m space group. Gd(1) is bonded in a 2-coordinate geometry to five equivalent Si(1) and two equivalent C(1) atoms. Re(1) is bonded in a single-bond geometry to three equivalent Si(1) and one C(1) atom. Si(1) is bonded in a 9-coordinate geometry to five equivalent Gd(1), three equivalent Re(1), and one Si(1) atom. C(1) is bonded to four equivalent Gd(1) and two equivalent Re(1) atoms to form edge-sharing CGd4Re2 octahedra.
Gd2Re2Si2C crystallizes in the monoclinic C2/m space group. Gd(1) is bonded in a 2-coordinate geometry to five equivalent Si(1) and two equivalent C(1) atoms. There are three shorter (3.07 Å) and two longer (3.16 Å) Gd(1)-Si(1) bond lengths. Both Gd(1)-C(1) bond lengths are 2.67 Å. Re(1) is bonded in a single-bond geometry to three equivalent Si(1) and one C(1) atom. There are two shorter (2.47 Å) and one longer (2.48 Å) Re(1)-Si(1) bond length. The Re(1)-C(1) bond length is 1.95 Å. Si(1) is bonded in a 9-coordinate geometry to five equivalent Gd(1), three equivalent Re(1), and one Si(1) atom. The Si(1)-Si(1) bond length is 2.59 Å. C(1) is bonded to four equivalent Gd(1) and two equivalent Re(1) atoms to form edge-sharing CGd4Re2 octahedra.