PuU4N5 is Caswellsilverite-like structured and crystallizes in the tetragonal I4/mmm space group. Pu(1) is bonded to two equivalent N(2) and four equivalent N(3) atoms to form PuN6 octahedra that share corners with two equivalent U(2)N6 octahedra, corners with four equivalent Pu(1)N6 octahedra, edges with four equivalent Pu(1)N6 octahedra, and edges with eight equivalent U(1)N6 octahedra. The corner-sharing octahedra are not tilted. There are two inequivalent U sites. In the first U site, U(1) is bonded to one N(1), one N(3), and four equivalent N(2) atoms to form UN6 octahedra that share  a cornercorner with one U(2)N6 octahedra, corners with five equivalent U(1)N6 octahedra, edges with four equivalent Pu(1)N6 octahedra, edges with four equivalent U(1)N6 octahedra, and edges with four equivalent U(2)N6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the second U site, U(2) is bonded to one N(2) and five equivalent N(1) atoms to form UN6 octahedra that share  a cornercorner with one Pu(1)N6 octahedra,  a cornercorner with one U(1)N6 octahedra, corners with four equivalent U(2)N6 octahedra, edges with four equivalent U(1)N6 octahedra, and edges with eight equivalent U(2)N6 octahedra. The corner-sharing octahedra are not tilted. There are three inequivalent N sites. In the first N site, N(1) is bonded to one U(1) and five equivalent U(2) atoms to form NU6 octahedra that share  a cornercorner with one N(3)Pu4U2 octahedra,  a cornercorner with one N(2)PuU5 octahedra, corners with four equivalent N(1)U6 octahedra, edges with four equivalent N(2)PuU5 octahedra, and edges with eight equivalent N(1)U6 octahedra. The corner-sharing octahedra are not tilted. In the second N site, N(2) is bonded to one Pu(1), one U(2), and four equivalent U(1) atoms to form NPuU5 octahedra that share  a cornercorner with one N(1)U6 octahedra, corners with five equivalent N(2)PuU5 octahedra, edges with four equivalent N(3)Pu4U2 octahedra, edges with four equivalent N(2)PuU5 octahedra, and edges with four equivalent N(1)U6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the third N site, N(3) is bonded to four equivalent Pu(1) and two equivalent U(1) atoms to form NPu4U2 octahedra that share corners with two equivalent N(1)U6 octahedra, corners with four equivalent N(3)Pu4U2 octahedra, edges with four equivalent N(3)Pu4U2 octahedra, and edges with eight equivalent N(2)PuU5 octahedra. The corner-sharing octahedra are not tilted.
PuU4N5 is Caswellsilverite-like structured and crystallizes in the tetragonal I4/mmm space group. Pu(1) is bonded to two equivalent N(2) and four equivalent N(3) atoms to form PuN6 octahedra that share corners with two equivalent U(2)N6 octahedra, corners with four equivalent Pu(1)N6 octahedra, edges with four equivalent Pu(1)N6 octahedra, and edges with eight equivalent U(1)N6 octahedra. The corner-sharing octahedra are not tilted. Both Pu(1)-N(2) bond lengths are 2.46 Å. All Pu(1)-N(3) bond lengths are 2.43 Å. There are two inequivalent U sites. In the first U site, U(1) is bonded to one N(1), one N(3), and four equivalent N(2) atoms to form UN6 octahedra that share  a cornercorner with one U(2)N6 octahedra, corners with five equivalent U(1)N6 octahedra, edges with four equivalent Pu(1)N6 octahedra, edges with four equivalent U(1)N6 octahedra, and edges with four equivalent U(2)N6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. The U(1)-N(1) bond length is 2.45 Å. The U(1)-N(3) bond length is 2.42 Å. All U(1)-N(2) bond lengths are 2.43 Å. In the second U site, U(2) is bonded to one N(2) and five equivalent N(1) atoms to form UN6 octahedra that share  a cornercorner with one Pu(1)N6 octahedra,  a cornercorner with one U(1)N6 octahedra, corners with four equivalent U(2)N6 octahedra, edges with four equivalent U(1)N6 octahedra, and edges with eight equivalent U(2)N6 octahedra. The corner-sharing octahedra are not tilted. The U(2)-N(2) bond length is 2.42 Å. There are four shorter (2.43 Å) and one longer (2.44 Å) U(2)-N(1) bond length. There are three inequivalent N sites. In the first N site, N(1) is bonded to one U(1) and five equivalent U(2) atoms to form NU6 octahedra that share  a cornercorner with one N(3)Pu4U2 octahedra,  a cornercorner with one N(2)PuU5 octahedra, corners with four equivalent N(1)U6 octahedra, edges with four equivalent N(2)PuU5 octahedra, and edges with eight equivalent N(1)U6 octahedra. The corner-sharing octahedra are not tilted. In the second N site, N(2) is bonded to one Pu(1), one U(2), and four equivalent U(1) atoms to form NPuU5 octahedra that share  a cornercorner with one N(1)U6 octahedra, corners with five equivalent N(2)PuU5 octahedra, edges with four equivalent N(3)Pu4U2 octahedra, edges with four equivalent N(2)PuU5 octahedra, and edges with four equivalent N(1)U6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the third N site, N(3) is bonded to four equivalent Pu(1) and two equivalent U(1) atoms to form NPu4U2 octahedra that share corners with two equivalent N(1)U6 octahedra, corners with four equivalent N(3)Pu4U2 octahedra, edges with four equivalent N(3)Pu4U2 octahedra, and edges with eight equivalent N(2)PuU5 octahedra. The corner-sharing octahedra are not tilted.