Hf2ON2 crystallizes in the triclinic P1 space group. There are sixteen inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a 6-coordinate geometry to one Hf(15), one N(1), one N(14), one N(6), one O(2), one O(6), and one O(7) atom. In the second Hf site, Hf(2) is bonded in a distorted hexagonal planar geometry to one N(1), one N(13), one N(16), one N(5), one N(8), and one O(6) atom. In the third Hf site, Hf(3) is bonded in a 5-coordinate geometry to one N(10), one N(12), one N(4), one N(9), and one O(8) atom. In the fourth Hf site, Hf(4) is bonded in a 10-coordinate geometry to one Hf(12), one Hf(13), one Hf(16), one N(13), one N(15), one N(16), one N(2), one N(5), one O(1), and one O(5) atom. In the fifth Hf site, Hf(5) is bonded in a 4-coordinate geometry to one N(10), one N(3), one N(4), and one N(6) atom. In the sixth Hf site, Hf(6) is bonded in a 6-coordinate geometry to one N(12), one N(9), one O(2), one O(3), one O(4), and one O(8) atom. In the seventh Hf site, Hf(7) is bonded in a 5-coordinate geometry to one Hf(15), one N(3), one N(7), one N(8), one O(3), and one O(4) atom. In the eighth Hf site, Hf(8) is bonded in a 1-coordinate geometry to one N(1), one N(10), one N(5), one N(6), and one O(6) atom. In the ninth Hf site, Hf(9) is bonded in a 1-coordinate geometry to one N(13), one N(3), one N(4), and one N(8) atom. In the tenth Hf site, Hf(10) is bonded in a 6-coordinate geometry to one N(11), one N(2), one O(1), one O(3), one O(4), and one O(8) atom. In the eleventh Hf site, Hf(11) is bonded in a 6-coordinate geometry to one N(12), one N(14), one N(9), one O(2), one O(5), and one O(7) atom. In the twelfth Hf site, Hf(12) is bonded in a 4-coordinate geometry to one Hf(4), one N(10), one N(12), one N(15), one N(5), and one O(5) atom. In the thirteenth Hf site, Hf(13) is bonded in a 2-coordinate geometry to one Hf(15), one Hf(4), one N(11), one N(14), one N(15), one N(2), one N(7), one O(1), one O(5), and one O(7) atom. In the fourteenth Hf site, Hf(14) is bonded in a 5-coordinate geometry to one N(3), one N(6), one O(2), one O(3), and one O(4) atom. In the fifteenth Hf site, Hf(15) is bonded in a 10-coordinate geometry to one Hf(1), one Hf(13), one Hf(7), one N(1), one N(11), one N(14), one N(7), one N(8), one O(6), and one O(7) atom. In the sixteenth Hf site, Hf(16) is bonded in a 6-coordinate geometry to one Hf(4), one N(13), one N(16), one N(2), one N(4), one O(1), and one O(8) atom. There are sixteen inequivalent N sites. In the first N site, N(1) is bonded in a 6-coordinate geometry to one Hf(1), one Hf(15), one Hf(2), one Hf(8), one N(8), and one O(6) atom. In the second N site, N(2) is bonded in a 4-coordinate geometry to one Hf(10), one Hf(13), one Hf(16), and one Hf(4) atom. In the third N site, N(3) is bonded in a 4-coordinate geometry to one Hf(14), one Hf(5), one Hf(7), one Hf(9), and one O(5) atom. In the fourth N site, N(4) is bonded in a distorted see-saw-like geometry to one Hf(16), one Hf(3), one Hf(5), and one Hf(9) atom. In the fifth N site, N(5) is bonded in a 5-coordinate geometry to one Hf(12), one Hf(2), one Hf(4), one Hf(8), and one N(16) atom. In the sixth N site, N(6) is bonded in a 4-coordinate geometry to one Hf(1), one Hf(14), one Hf(5), and one Hf(8) atom. In the seventh N site, N(7) is bonded in a 3-coordinate geometry to one Hf(13), one Hf(15), and one Hf(7) atom. In the eighth N site, N(8) is bonded in a 5-coordinate geometry to one Hf(15), one Hf(2), one Hf(7), one Hf(9), and one N(1) atom. In the ninth N site, N(9) is bonded in a 2-coordinate geometry to one Hf(11), one Hf(3), and one Hf(6) atom. In the tenth N site, N(10) is bonded in a 4-coordinate geometry to one Hf(12), one Hf(3), one Hf(5), and one Hf(8) atom. In the eleventh N site, N(11) is bonded in a 3-coordinate geometry to one Hf(10), one Hf(13), and one Hf(15) atom. In the twelfth N site, N(12) is bonded in a 4-coordinate geometry to one Hf(11), one Hf(12), one Hf(3), and one Hf(6) atom. In the thirteenth N site, N(13) is bonded in a 3-coordinate geometry to one Hf(16), one Hf(2), one Hf(4), and one Hf(9) atom. In the fourteenth N site, N(14) is bonded in a 4-coordinate geometry to one Hf(1), one Hf(11), one Hf(13), and one Hf(15) atom. In the fifteenth N site, N(15) is bonded in a 3-coordinate geometry to one Hf(12), one Hf(13), and one Hf(4) atom. In the sixteenth N site, N(16) is bonded in a 3-coordinate geometry to one Hf(16), one Hf(2), one Hf(4), and one N(5) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Hf(10), one Hf(13), one Hf(16), and one Hf(4) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Hf(1), one Hf(11), one Hf(14), and one Hf(6) atom. In the third O site, O(3) is bonded in a 1-coordinate geometry to one Hf(10), one Hf(14), one Hf(6), and one Hf(7) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Hf(10), one Hf(14), one Hf(6), and one Hf(7) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Hf(11), one Hf(12), one Hf(13), one Hf(4), and one N(3) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Hf(1), one Hf(15), one Hf(2), one Hf(8), and one N(1) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Hf(1), one Hf(11), one Hf(13), and one Hf(15) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Hf(10), one Hf(16), one Hf(3), and one Hf(6) atom.
Hf2ON2 crystallizes in the triclinic P1 space group. There are sixteen inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a 6-coordinate geometry to one Hf(15), one N(1), one N(14), one N(6), one O(2), one O(6), and one O(7) atom. The Hf(1)-Hf(15) bond length is 2.20 Å. The Hf(1)-N(1) bond length is 2.11 Å. The Hf(1)-N(14) bond length is 2.50 Å. The Hf(1)-N(6) bond length is 2.33 Å. The Hf(1)-O(2) bond length is 2.05 Å. The Hf(1)-O(6) bond length is 1.74 Å. The Hf(1)-O(7) bond length is 2.04 Å. In the second Hf site, Hf(2) is bonded in a distorted hexagonal planar geometry to one N(1), one N(13), one N(16), one N(5), one N(8), and one O(6) atom. The Hf(2)-N(1) bond length is 2.05 Å. The Hf(2)-N(13) bond length is 1.90 Å. The Hf(2)-N(16) bond length is 1.87 Å. The Hf(2)-N(5) bond length is 2.13 Å. The Hf(2)-N(8) bond length is 2.13 Å. The Hf(2)-O(6) bond length is 1.95 Å. In the third Hf site, Hf(3) is bonded in a 5-coordinate geometry to one N(10), one N(12), one N(4), one N(9), and one O(8) atom. The Hf(3)-N(10) bond length is 2.04 Å. The Hf(3)-N(12) bond length is 2.29 Å. The Hf(3)-N(4) bond length is 1.97 Å. The Hf(3)-N(9) bond length is 1.81 Å. The Hf(3)-O(8) bond length is 1.68 Å. In the fourth Hf site, Hf(4) is bonded in a 10-coordinate geometry to one Hf(12), one Hf(13), one Hf(16), one N(13), one N(15), one N(16), one N(2), one N(5), one O(1), and one O(5) atom. The Hf(4)-Hf(12) bond length is 2.26 Å. The Hf(4)-Hf(13) bond length is 2.32 Å. The Hf(4)-Hf(16) bond length is 2.20 Å. The Hf(4)-N(13) bond length is 2.42 Å. The Hf(4)-N(15) bond length is 2.45 Å. The Hf(4)-N(16) bond length is 2.18 Å. The Hf(4)-N(2) bond length is 2.56 Å. The Hf(4)-N(5) bond length is 2.39 Å. The Hf(4)-O(1) bond length is 2.28 Å. The Hf(4)-O(5) bond length is 2.47 Å. In the fifth Hf site, Hf(5) is bonded in a 4-coordinate geometry to one N(10), one N(3), one N(4), and one N(6) atom. The Hf(5)-N(10) bond length is 2.22 Å. The Hf(5)-N(3) bond length is 2.27 Å. The Hf(5)-N(4) bond length is 1.92 Å. The Hf(5)-N(6) bond length is 1.91 Å. In the sixth Hf site, Hf(6) is bonded in a 6-coordinate geometry to one N(12), one N(9), one O(2), one O(3), one O(4), and one O(8) atom. The Hf(6)-N(12) bond length is 1.93 Å. The Hf(6)-N(9) bond length is 2.32 Å. The Hf(6)-O(2) bond length is 2.08 Å. The Hf(6)-O(3) bond length is 2.36 Å. The Hf(6)-O(4) bond length is 2.06 Å. The Hf(6)-O(8) bond length is 2.12 Å. In the seventh Hf site, Hf(7) is bonded in a 5-coordinate geometry to one Hf(15), one N(3), one N(7), one N(8), one O(3), and one O(4) atom. The Hf(7)-Hf(15) bond length is 2.27 Å. The Hf(7)-N(3) bond length is 2.45 Å. The Hf(7)-N(7) bond length is 2.20 Å. The Hf(7)-N(8) bond length is 1.94 Å. The Hf(7)-O(3) bond length is 2.54 Å. The Hf(7)-O(4) bond length is 2.29 Å. In the eighth Hf site, Hf(8) is bonded in a 1-coordinate geometry to one N(1), one N(10), one N(5), one N(6), and one O(6) atom. The Hf(8)-N(1) bond length is 2.50 Å. The Hf(8)-N(10) bond length is 2.22 Å. The Hf(8)-N(5) bond length is 2.32 Å. The Hf(8)-N(6) bond length is 2.14 Å. The Hf(8)-O(6) bond length is 1.69 Å. In the ninth Hf site, Hf(9) is bonded in a 1-coordinate geometry to one N(13), one N(3), one N(4), and one N(8) atom. The Hf(9)-N(13) bond length is 1.54 Å. The Hf(9)-N(3) bond length is 2.41 Å. The Hf(9)-N(4) bond length is 2.09 Å. The Hf(9)-N(8) bond length is 2.28 Å. In the tenth Hf site, Hf(10) is bonded in a 6-coordinate geometry to one N(11), one N(2), one O(1), one O(3), one O(4), and one O(8) atom. The Hf(10)-N(11) bond length is 2.02 Å. The Hf(10)-N(2) bond length is 2.31 Å. The Hf(10)-O(1) bond length is 2.19 Å. The Hf(10)-O(3) bond length is 2.13 Å. The Hf(10)-O(4) bond length is 2.06 Å. The Hf(10)-O(8) bond length is 2.26 Å. In the eleventh Hf site, Hf(11) is bonded in a 6-coordinate geometry to one N(12), one N(14), one N(9), one O(2), one O(5), and one O(7) atom. The Hf(11)-N(12) bond length is 1.99 Å. The Hf(11)-N(14) bond length is 2.38 Å. The Hf(11)-N(9) bond length is 2.09 Å. The Hf(11)-O(2) bond length is 2.27 Å. The Hf(11)-O(5) bond length is 2.01 Å. The Hf(11)-O(7) bond length is 2.25 Å. In the twelfth Hf site, Hf(12) is bonded in a 4-coordinate geometry to one Hf(4), one N(10), one N(12), one N(15), one N(5), and one O(5) atom. The Hf(12)-N(10) bond length is 2.44 Å. The Hf(12)-N(12) bond length is 2.27 Å. The Hf(12)-N(15) bond length is 2.18 Å. The Hf(12)-N(5) bond length is 1.91 Å. The Hf(12)-O(5) bond length is 2.79 Å. In the thirteenth Hf site, Hf(13) is bonded in a 2-coordinate geometry to one Hf(15), one Hf(4), one N(11), one N(14), one N(15), one N(2), one N(7), one O(1), one O(5), and one O(7) atom. The Hf(13)-Hf(15) bond length is 2.18 Å. The Hf(13)-N(11) bond length is 2.43 Å. The Hf(13)-N(14) bond length is 2.69 Å. The Hf(13)-N(15) bond length is 2.44 Å. The Hf(13)-N(2) bond length is 2.59 Å. The Hf(13)-N(7) bond length is 2.43 Å. The Hf(13)-O(1) bond length is 2.23 Å. The Hf(13)-O(5) bond length is 2.63 Å. The Hf(13)-O(7) bond length is 2.17 Å. In the fourteenth Hf site, Hf(14) is bonded in a 5-coordinate geometry to one N(3), one N(6), one O(2), one O(3), and one O(4) atom. The Hf(14)-N(3) bond length is 2.06 Å. The Hf(14)-N(6) bond length is 1.85 Å. The Hf(14)-O(2) bond length is 1.53 Å. The Hf(14)-O(3) bond length is 1.78 Å. The Hf(14)-O(4) bond length is 2.40 Å. In the fifteenth Hf site, Hf(15) is bonded in a 10-coordinate geometry to one Hf(1), one Hf(13), one Hf(7), one N(1), one N(11), one N(14), one N(7), one N(8), one O(6), and one O(7) atom. The Hf(15)-N(1) bond length is 2.30 Å. The Hf(15)-N(11) bond length is 2.43 Å. The Hf(15)-N(14) bond length is 2.59 Å. The Hf(15)-N(7) bond length is 2.46 Å. The Hf(15)-N(8) bond length is 2.46 Å. The Hf(15)-O(6) bond length is 2.45 Å. The Hf(15)-O(7) bond length is 2.19 Å. In the sixteenth Hf site, Hf(16) is bonded in a 6-coordinate geometry to one Hf(4), one N(13), one N(16), one N(2), one N(4), one O(1), and one O(8) atom. The Hf(16)-N(13) bond length is 1.73 Å. The Hf(16)-N(16) bond length is 2.07 Å. The Hf(16)-N(2) bond length is 2.51 Å. The Hf(16)-N(4) bond length is 2.27 Å. The Hf(16)-O(1) bond length is 2.13 Å. The Hf(16)-O(8) bond length is 2.07 Å. There are sixteen inequivalent N sites. In the first N site, N(1) is bonded in a 6-coordinate geometry to one Hf(1), one Hf(15), one Hf(2), one Hf(8), one N(8), and one O(6) atom. The N(1)-N(8) bond length is 1.99 Å. The N(1)-O(6) bond length is 2.02 Å. In the second N site, N(2) is bonded in a 4-coordinate geometry to one Hf(10), one Hf(13), one Hf(16), and one Hf(4) atom. In the third N site, N(3) is bonded in a 4-coordinate geometry to one Hf(14), one Hf(5), one Hf(7), one Hf(9), and one O(5) atom. The N(3)-O(5) bond length is 2.13 Å. In the fourth N site, N(4) is bonded in a distorted see-saw-like geometry to one Hf(16), one Hf(3), one Hf(5), and one Hf(9) atom. In the fifth N site, N(5) is bonded in a 5-coordinate geometry to one Hf(12), one Hf(2), one Hf(4), one Hf(8), and one N(16) atom. The N(5)-N(16) bond length is 1.99 Å. In the sixth N site, N(6) is bonded in a 4-coordinate geometry to one Hf(1), one Hf(14), one Hf(5), and one Hf(8) atom. In the seventh N site, N(7) is bonded in a 3-coordinate geometry to one Hf(13), one Hf(15), and one Hf(7) atom. In the eighth N site, N(8) is bonded in a 5-coordinate geometry to one Hf(15), one Hf(2), one Hf(7), one Hf(9), and one N(1) atom. In the ninth N site, N(9) is bonded in a 2-coordinate geometry to one Hf(11), one Hf(3), and one Hf(6) atom. In the tenth N site, N(10) is bonded in a 4-coordinate geometry to one Hf(12), one Hf(3), one Hf(5), and one Hf(8) atom. In the eleventh N site, N(11) is bonded in a 3-coordinate geometry to one Hf(10), one Hf(13), and one Hf(15) atom. In the twelfth N site, N(12) is bonded in a 4-coordinate geometry to one Hf(11), one Hf(12), one Hf(3), and one Hf(6) atom. In the thirteenth N site, N(13) is bonded in a 3-coordinate geometry to one Hf(16), one Hf(2), one Hf(4), and one Hf(9) atom. In the fourteenth N site, N(14) is bonded in a 4-coordinate geometry to one Hf(1), one Hf(11), one Hf(13), and one Hf(15) atom. In the fifteenth N site, N(15) is bonded in a 3-coordinate geometry to one Hf(12), one Hf(13), and one Hf(4) atom. In the sixteenth N site, N(16) is bonded in a 3-coordinate geometry to one Hf(16), one Hf(2), one Hf(4), and one N(5) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Hf(10), one Hf(13), one Hf(16), and one Hf(4) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Hf(1), one Hf(11), one Hf(14), and one Hf(6) atom. In the third O site, O(3) is bonded in a 1-coordinate geometry to one Hf(10), one Hf(14), one Hf(6), and one Hf(7) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Hf(10), one Hf(14), one Hf(6), and one Hf(7) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Hf(11), one Hf(12), one Hf(13), one Hf(4), and one N(3) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Hf(1), one Hf(15), one Hf(2), one Hf(8), and one N(1) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Hf(1), one Hf(11), one Hf(13), and one Hf(15) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Hf(10), one Hf(16), one Hf(3), and one Hf(6) atom.