PrN2 crystallizes in the monoclinic Cm space group. There are three inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 8-coordinate geometry to one N(1), one N(2), one N(4), one N(5), two equivalent N(3), and two equivalent N(6) atoms. In the second Pr site, Pr(2) is bonded in a 7-coordinate geometry to one N(1), one N(4), one N(6), two equivalent N(2), and two equivalent N(5) atoms. In the third Pr site, Pr(3) is bonded to one N(2), one N(3), one N(4), one N(5), and two equivalent N(1) atoms to form distorted corner-sharing PrN6 octahedra. The corner-sharing octahedral tilt angles are 40°. There are six inequivalent N sites. In the first N site, N(1) is bonded to one Pr(1), one Pr(2), and two equivalent Pr(3) atoms to form distorted corner-sharing NPr4 trigonal pyramids. In the second N site, N(2) is bonded in a 5-coordinate geometry to one Pr(1), one Pr(3), two equivalent Pr(2), and one N(5) atom. In the third N site, N(3) is bonded in a distorted square co-planar geometry to one Pr(3), two equivalent Pr(1), and one N(6) atom. In the fourth N site, N(4) is bonded in a distorted T-shaped geometry to one Pr(1), one Pr(2), and one Pr(3) atom. In the fifth N site, N(5) is bonded in a 5-coordinate geometry to one Pr(1), one Pr(3), two equivalent Pr(2), and one N(2) atom. In the sixth N site, N(6) is bonded in a 4-coordinate geometry to one Pr(2), two equivalent Pr(1), and one N(3) atom.
PrN2 crystallizes in the monoclinic Cm space group. There are three inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 8-coordinate geometry to one N(1), one N(2), one N(4), one N(5), two equivalent N(3), and two equivalent N(6) atoms. The Pr(1)-N(1) bond length is 2.34 Å. The Pr(1)-N(2) bond length is 2.86 Å. The Pr(1)-N(4) bond length is 2.26 Å. The Pr(1)-N(5) bond length is 2.89 Å. Both Pr(1)-N(3) bond lengths are 2.58 Å. Both Pr(1)-N(6) bond lengths are 2.63 Å. In the second Pr site, Pr(2) is bonded in a 7-coordinate geometry to one N(1), one N(4), one N(6), two equivalent N(2), and two equivalent N(5) atoms. The Pr(2)-N(1) bond length is 2.28 Å. The Pr(2)-N(4) bond length is 2.30 Å. The Pr(2)-N(6) bond length is 2.79 Å. Both Pr(2)-N(2) bond lengths are 2.77 Å. Both Pr(2)-N(5) bond lengths are 2.63 Å. In the third Pr site, Pr(3) is bonded to one N(2), one N(3), one N(4), one N(5), and two equivalent N(1) atoms to form distorted corner-sharing PrN6 octahedra. The corner-sharing octahedral tilt angles are 40°. The Pr(3)-N(2) bond length is 2.56 Å. The Pr(3)-N(3) bond length is 2.68 Å. The Pr(3)-N(4) bond length is 2.32 Å. The Pr(3)-N(5) bond length is 2.49 Å. Both Pr(3)-N(1) bond lengths are 2.66 Å. There are six inequivalent N sites. In the first N site, N(1) is bonded to one Pr(1), one Pr(2), and two equivalent Pr(3) atoms to form distorted corner-sharing NPr4 trigonal pyramids. In the second N site, N(2) is bonded in a 5-coordinate geometry to one Pr(1), one Pr(3), two equivalent Pr(2), and one N(5) atom. The N(2)-N(5) bond length is 1.25 Å. In the third N site, N(3) is bonded in a distorted square co-planar geometry to one Pr(3), two equivalent Pr(1), and one N(6) atom. The N(3)-N(6) bond length is 1.20 Å. In the fourth N site, N(4) is bonded in a distorted T-shaped geometry to one Pr(1), one Pr(2), and one Pr(3) atom. In the fifth N site, N(5) is bonded in a 5-coordinate geometry to one Pr(1), one Pr(3), two equivalent Pr(2), and one N(2) atom. In the sixth N site, N(6) is bonded in a 4-coordinate geometry to one Pr(2), two equivalent Pr(1), and one N(3) atom.