NdB2C2 crystallizes in the tetragonal P4_2/mmc space group. Nd(1) is bonded in a 16-coordinate geometry to eight equivalent B(1) and eight equivalent C(1) atoms. B(1) is bonded in a 2-coordinate geometry to four equivalent Nd(1) and two equivalent C(1) atoms. C(1) is bonded in a 3-coordinate geometry to four equivalent Nd(1), two equivalent B(1), and one C(1) atom.
NdB2C2 crystallizes in the tetragonal P4_2/mmc space group. Nd(1) is bonded in a 16-coordinate geometry to eight equivalent B(1) and eight equivalent C(1) atoms. All Nd(1)-B(1) bond lengths are 2.84 Å. All Nd(1)-C(1) bond lengths are 2.80 Å. B(1) is bonded in a 2-coordinate geometry to four equivalent Nd(1) and two equivalent C(1) atoms. Both B(1)-C(1) bond lengths are 1.62 Å. C(1) is bonded in a 3-coordinate geometry to four equivalent Nd(1), two equivalent B(1), and one C(1) atom. The C(1)-C(1) bond length is 1.43 Å.