ScB2C2 crystallizes in the orthorhombic Pbam space group. Sc(1) is bonded in a 14-coordinate geometry to four equivalent B(1), four equivalent B(2), two equivalent C(2), and four equivalent C(1) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded in a distorted trigonal planar geometry to four equivalent Sc(1), one C(2), and two equivalent C(1) atoms. In the second B site, B(2) is bonded in a 2-coordinate geometry to four equivalent Sc(1), one C(1), and one C(2) atom. There are two inequivalent C sites. In the first C site, C(1) is bonded in a 3-coordinate geometry to four equivalent Sc(1), one B(2), and two equivalent B(1) atoms. In the second C site, C(2) is bonded in a 5-coordinate geometry to two equivalent Sc(1), one B(1), one B(2), and one C(2) atom.
ScB2C2 crystallizes in the orthorhombic Pbam space group. Sc(1) is bonded in a 14-coordinate geometry to four equivalent B(1), four equivalent B(2), two equivalent C(2), and four equivalent C(1) atoms. There are two shorter (2.52 Å) and two longer (2.56 Å) Sc(1)-B(1) bond lengths. All Sc(1)-B(2) bond lengths are 2.55 Å. Both Sc(1)-C(2) bond lengths are 2.43 Å. There are two shorter (2.52 Å) and two longer (2.53 Å) Sc(1)-C(1) bond lengths. There are two inequivalent B sites. In the first B site, B(1) is bonded in a distorted trigonal planar geometry to four equivalent Sc(1), one C(2), and two equivalent C(1) atoms. The B(1)-C(2) bond length is 1.55 Å. There is one shorter (1.59 Å) and one longer (1.64 Å) B(1)-C(1) bond length. In the second B site, B(2) is bonded in a 2-coordinate geometry to four equivalent Sc(1), one C(1), and one C(2) atom. The B(2)-C(1) bond length is 1.62 Å. The B(2)-C(2) bond length is 1.55 Å. There are two inequivalent C sites. In the first C site, C(1) is bonded in a 3-coordinate geometry to four equivalent Sc(1), one B(2), and two equivalent B(1) atoms. In the second C site, C(2) is bonded in a 5-coordinate geometry to two equivalent Sc(1), one B(1), one B(2), and one C(2) atom. The C(2)-C(2) bond length is 1.45 Å.