PuWC2 crystallizes in the orthorhombic Pnma space group. Pu(1) is bonded to three equivalent C(2) and four equivalent C(1) atoms to form distorted PuC7 pentagonal bipyramids that share corners with four equivalent Pu(1)C7 pentagonal bipyramids, corners with three equivalent W(1)C5 trigonal bipyramids, edges with four equivalent Pu(1)C7 pentagonal bipyramids, edges with seven equivalent W(1)C5 trigonal bipyramids, and faces with two equivalent Pu(1)C7 pentagonal bipyramids. W(1) is bonded to two equivalent C(1) and three equivalent C(2) atoms to form WC5 trigonal bipyramids that share corners with three equivalent Pu(1)C7 pentagonal bipyramids, corners with four equivalent W(1)C5 trigonal bipyramids, edges with seven equivalent Pu(1)C7 pentagonal bipyramids, and edges with two equivalent W(1)C5 trigonal bipyramids. There are two inequivalent C sites. In the first C site, C(1) is bonded to four equivalent Pu(1) and two equivalent W(1) atoms to form CPu4W2 octahedra that share corners with four equivalent C(1)Pu4W2 octahedra, corners with nine equivalent C(2)Pu3W3 octahedra, edges with two equivalent C(1)Pu4W2 octahedra, edges with three equivalent C(2)Pu3W3 octahedra,  a faceface with one C(2)Pu3W3 octahedra, and faces with two equivalent C(1)Pu4W2 octahedra. The corner-sharing octahedral tilt angles range from 12-59°. In the second C site, C(2) is bonded to three equivalent Pu(1) and three equivalent W(1) atoms to form CPu3W3 octahedra that share corners with nine equivalent C(1)Pu4W2 octahedra, edges with three equivalent C(1)Pu4W2 octahedra, edges with six equivalent C(2)Pu3W3 octahedra, and  a faceface with one C(1)Pu4W2 octahedra. The corner-sharing octahedral tilt angles range from 12-59°.
PuWC2 crystallizes in the orthorhombic Pnma space group. Pu(1) is bonded to three equivalent C(2) and four equivalent C(1) atoms to form distorted PuC7 pentagonal bipyramids that share corners with four equivalent Pu(1)C7 pentagonal bipyramids, corners with three equivalent W(1)C5 trigonal bipyramids, edges with four equivalent Pu(1)C7 pentagonal bipyramids, edges with seven equivalent W(1)C5 trigonal bipyramids, and faces with two equivalent Pu(1)C7 pentagonal bipyramids. There is one shorter (2.44 Å) and two longer (2.54 Å) Pu(1)-C(2) bond lengths. There are two shorter (2.45 Å) and two longer (2.52 Å) Pu(1)-C(1) bond lengths. W(1) is bonded to two equivalent C(1) and three equivalent C(2) atoms to form WC5 trigonal bipyramids that share corners with three equivalent Pu(1)C7 pentagonal bipyramids, corners with four equivalent W(1)C5 trigonal bipyramids, edges with seven equivalent Pu(1)C7 pentagonal bipyramids, and edges with two equivalent W(1)C5 trigonal bipyramids. There is one shorter (2.08 Å) and one longer (2.15 Å) W(1)-C(1) bond length. There are two shorter (2.13 Å) and one longer (2.25 Å) W(1)-C(2) bond length. There are two inequivalent C sites. In the first C site, C(1) is bonded to four equivalent Pu(1) and two equivalent W(1) atoms to form CPu4W2 octahedra that share corners with four equivalent C(1)Pu4W2 octahedra, corners with nine equivalent C(2)Pu3W3 octahedra, edges with two equivalent C(1)Pu4W2 octahedra, edges with three equivalent C(2)Pu3W3 octahedra,  a faceface with one C(2)Pu3W3 octahedra, and faces with two equivalent C(1)Pu4W2 octahedra. The corner-sharing octahedral tilt angles range from 12-59°. In the second C site, C(2) is bonded to three equivalent Pu(1) and three equivalent W(1) atoms to form CPu3W3 octahedra that share corners with nine equivalent C(1)Pu4W2 octahedra, edges with three equivalent C(1)Pu4W2 octahedra, edges with six equivalent C(2)Pu3W3 octahedra, and  a faceface with one C(1)Pu4W2 octahedra. The corner-sharing octahedral tilt angles range from 12-59°.