Ho7C2NI12 crystallizes in the triclinic P-1 space group. There are seven inequivalent Ho sites. In the first Ho site, Ho(1) is bonded to one C(2), one I(11), one I(4), one I(6), one I(8), and one I(9) atom to form distorted HoCI5 octahedra that share  a cornercorner with one Ho(6)C2I5 pentagonal bipyramid,  an edgeedge with one Ho(2)CI5 octahedra, and  an edgeedge with one Ho(6)C2I5 pentagonal bipyramid. In the second Ho site, Ho(2) is bonded to one C(1), one I(10), one I(4), one I(5), one I(7), and one I(8) atom to form distorted HoCI5 octahedra that share  an edgeedge with one Ho(1)CI5 octahedra and  an edgeedge with one Ho(6)C2I5 pentagonal bipyramid. In the third Ho site, Ho(3) is bonded in a distorted single-bond geometry to one C(1), one C(2), one N(1), one I(2), one I(3), one I(7), and one I(8) atom. In the fourth Ho site, Ho(4) is bonded in a distorted L-shaped geometry to two equivalent N(1), one I(11), one I(5), one I(7), and one I(8) atom. In the fifth Ho site, Ho(5) is bonded in a 7-coordinate geometry to one C(1), one C(2), one I(1), one I(4), one I(6), and two equivalent I(12) atoms. In the sixth Ho site, Ho(6) is bonded to one C(1), one C(2), one I(10), one I(12), one I(3), and two equivalent I(9) atoms to form distorted HoC2I5 pentagonal bipyramids that share  a cornercorner with one Ho(1)CI5 octahedra,  an edgeedge with one Ho(1)CI5 octahedra,  an edgeedge with one Ho(2)CI5 octahedra, and  an edgeedge with one Ho(6)C2I5 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 3°. In the seventh Ho site, Ho(7) is bonded in a distorted single-bond geometry to one C(1), one C(2), one N(1), one I(1), one I(11), one I(2), and one I(5) atom. There are two inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to one Ho(2), one Ho(3), one Ho(5), one Ho(6), one Ho(7), and one C(2) atom. In the second C site, C(2) is bonded in a 6-coordinate geometry to one Ho(1), one Ho(3), one Ho(5), one Ho(6), one Ho(7), and one C(1) atom. N(1) is bonded to one Ho(3), one Ho(7), and two equivalent Ho(4) atoms to form NHo4 tetrahedra that share  a cornercorner with one I(8)Ho4 trigonal pyramid,  an edgeedge with one N(1)Ho4 tetrahedra, and  an edgeedge with one I(8)Ho4 trigonal pyramid. There are twelve inequivalent I sites. In the first I site, I(1) is bonded in a 2-coordinate geometry to one Ho(5) and one Ho(7) atom. In the second I site, I(2) is bonded in a distorted bent 120 degrees geometry to one Ho(3) and one Ho(7) atom. In the third I site, I(3) is bonded in a 2-coordinate geometry to one Ho(3) and one Ho(6) atom. In the fourth I site, I(4) is bonded in a T-shaped geometry to one Ho(1), one Ho(2), and one Ho(5) atom. In the fifth I site, I(5) is bonded in a distorted T-shaped geometry to one Ho(2), one Ho(4), and one Ho(7) atom. In the sixth I site, I(6) is bonded in a distorted L-shaped geometry to one Ho(1) and one Ho(5) atom. In the seventh I site, I(7) is bonded in a distorted T-shaped geometry to one Ho(2), one Ho(3), and one Ho(4) atom. In the eighth I site, I(8) is bonded to one Ho(1), one Ho(2), one Ho(3), and one Ho(4) atom to form distorted IHo4 trigonal pyramids that share  a cornercorner with one N(1)Ho4 tetrahedra and  an edgeedge with one N(1)Ho4 tetrahedra. In the ninth I site, I(9) is bonded in a distorted T-shaped geometry to one Ho(1) and two equivalent Ho(6) atoms. In the tenth I site, I(10) is bonded in a distorted L-shaped geometry to one Ho(2) and one Ho(6) atom. In the eleventh I site, I(11) is bonded in a distorted T-shaped geometry to one Ho(1), one Ho(4), and one Ho(7) atom. In the twelfth I site, I(12) is bonded in a 3-coordinate geometry to one Ho(6) and two equivalent Ho(5) atoms.
Ho7C2NI12 crystallizes in the triclinic P-1 space group. There are seven inequivalent Ho sites. In the first Ho site, Ho(1) is bonded to one C(2), one I(11), one I(4), one I(6), one I(8), and one I(9) atom to form distorted HoCI5 octahedra that share  a cornercorner with one Ho(6)C2I5 pentagonal bipyramid,  an edgeedge with one Ho(2)CI5 octahedra, and  an edgeedge with one Ho(6)C2I5 pentagonal bipyramid. The Ho(1)-C(2) bond length is 2.20 Å. The Ho(1)-I(11) bond length is 3.13 Å. The Ho(1)-I(4) bond length is 3.33 Å. The Ho(1)-I(6) bond length is 2.96 Å. The Ho(1)-I(8) bond length is 3.20 Å. The Ho(1)-I(9) bond length is 3.06 Å. In the second Ho site, Ho(2) is bonded to one C(1), one I(10), one I(4), one I(5), one I(7), and one I(8) atom to form distorted HoCI5 octahedra that share  an edgeedge with one Ho(1)CI5 octahedra and  an edgeedge with one Ho(6)C2I5 pentagonal bipyramid. The Ho(2)-C(1) bond length is 2.19 Å. The Ho(2)-I(10) bond length is 2.97 Å. The Ho(2)-I(4) bond length is 3.04 Å. The Ho(2)-I(5) bond length is 3.15 Å. The Ho(2)-I(7) bond length is 3.13 Å. The Ho(2)-I(8) bond length is 3.38 Å. In the third Ho site, Ho(3) is bonded in a distorted single-bond geometry to one C(1), one C(2), one N(1), one I(2), one I(3), one I(7), and one I(8) atom. The Ho(3)-C(1) bond length is 2.59 Å. The Ho(3)-C(2) bond length is 2.62 Å. The Ho(3)-N(1) bond length is 2.16 Å. The Ho(3)-I(2) bond length is 3.24 Å. The Ho(3)-I(3) bond length is 3.06 Å. The Ho(3)-I(7) bond length is 3.12 Å. The Ho(3)-I(8) bond length is 3.20 Å. In the fourth Ho site, Ho(4) is bonded in a distorted L-shaped geometry to two equivalent N(1), one I(11), one I(5), one I(7), and one I(8) atom. There is one shorter (2.18 Å) and one longer (2.19 Å) Ho(4)-N(1) bond length. The Ho(4)-I(11) bond length is 3.30 Å. The Ho(4)-I(5) bond length is 3.29 Å. The Ho(4)-I(7) bond length is 3.29 Å. The Ho(4)-I(8) bond length is 3.37 Å. In the fifth Ho site, Ho(5) is bonded in a 7-coordinate geometry to one C(1), one C(2), one I(1), one I(4), one I(6), and two equivalent I(12) atoms. The Ho(5)-C(1) bond length is 2.50 Å. The Ho(5)-C(2) bond length is 2.47 Å. The Ho(5)-I(1) bond length is 3.00 Å. The Ho(5)-I(4) bond length is 3.22 Å. The Ho(5)-I(6) bond length is 3.05 Å. There is one shorter (3.05 Å) and one longer (3.49 Å) Ho(5)-I(12) bond length. In the sixth Ho site, Ho(6) is bonded to one C(1), one C(2), one I(10), one I(12), one I(3), and two equivalent I(9) atoms to form distorted HoC2I5 pentagonal bipyramids that share  a cornercorner with one Ho(1)CI5 octahedra,  an edgeedge with one Ho(1)CI5 octahedra,  an edgeedge with one Ho(2)CI5 octahedra, and  an edgeedge with one Ho(6)C2I5 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 3°. The Ho(6)-C(1) bond length is 2.50 Å. The Ho(6)-C(2) bond length is 2.51 Å. The Ho(6)-I(10) bond length is 3.07 Å. The Ho(6)-I(12) bond length is 3.08 Å. The Ho(6)-I(3) bond length is 3.01 Å. There is one shorter (3.14 Å) and one longer (3.41 Å) Ho(6)-I(9) bond length. In the seventh Ho site, Ho(7) is bonded in a distorted single-bond geometry to one C(1), one C(2), one N(1), one I(1), one I(11), one I(2), and one I(5) atom. The Ho(7)-C(1) bond length is 2.61 Å. The Ho(7)-C(2) bond length is 2.62 Å. The Ho(7)-N(1) bond length is 2.17 Å. The Ho(7)-I(1) bond length is 3.09 Å. The Ho(7)-I(11) bond length is 3.12 Å. The Ho(7)-I(2) bond length is 3.25 Å. The Ho(7)-I(5) bond length is 3.15 Å. There are two inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to one Ho(2), one Ho(3), one Ho(5), one Ho(6), one Ho(7), and one C(2) atom. The C(1)-C(2) bond length is 1.44 Å. In the second C site, C(2) is bonded in a 6-coordinate geometry to one Ho(1), one Ho(3), one Ho(5), one Ho(6), one Ho(7), and one C(1) atom. N(1) is bonded to one Ho(3), one Ho(7), and two equivalent Ho(4) atoms to form NHo4 tetrahedra that share  a cornercorner with one I(8)Ho4 trigonal pyramid,  an edgeedge with one N(1)Ho4 tetrahedra, and  an edgeedge with one I(8)Ho4 trigonal pyramid. There are twelve inequivalent I sites. In the first I site, I(1) is bonded in a 2-coordinate geometry to one Ho(5) and one Ho(7) atom. In the second I site, I(2) is bonded in a distorted bent 120 degrees geometry to one Ho(3) and one Ho(7) atom. In the third I site, I(3) is bonded in a 2-coordinate geometry to one Ho(3) and one Ho(6) atom. In the fourth I site, I(4) is bonded in a T-shaped geometry to one Ho(1), one Ho(2), and one Ho(5) atom. In the fifth I site, I(5) is bonded in a distorted T-shaped geometry to one Ho(2), one Ho(4), and one Ho(7) atom. In the sixth I site, I(6) is bonded in a distorted L-shaped geometry to one Ho(1) and one Ho(5) atom. In the seventh I site, I(7) is bonded in a distorted T-shaped geometry to one Ho(2), one Ho(3), and one Ho(4) atom. In the eighth I site, I(8) is bonded to one Ho(1), one Ho(2), one Ho(3), and one Ho(4) atom to form distorted IHo4 trigonal pyramids that share  a cornercorner with one N(1)Ho4 tetrahedra and  an edgeedge with one N(1)Ho4 tetrahedra. In the ninth I site, I(9) is bonded in a distorted T-shaped geometry to one Ho(1) and two equivalent Ho(6) atoms. In the tenth I site, I(10) is bonded in a distorted L-shaped geometry to one Ho(2) and one Ho(6) atom. In the eleventh I site, I(11) is bonded in a distorted T-shaped geometry to one Ho(1), one Ho(4), and one Ho(7) atom. In the twelfth I site, I(12) is bonded in a 3-coordinate geometry to one Ho(6) and two equivalent Ho(5) atoms.