ThErCN is alpha Po-derived structured and crystallizes in the tetragonal P4/mmm space group. Th(1) is bonded to four equivalent C(1) and two equivalent N(1) atoms to form ThC4N2 octahedra that share corners with six equivalent Th(1)C4N2 octahedra, edges with four equivalent Th(1)C4N2 octahedra, and edges with eight equivalent Er(1)C2N4 octahedra. The corner-sharing octahedra are not tilted. Er(1) is bonded to two equivalent C(1) and four equivalent N(1) atoms to form ErC2N4 octahedra that share corners with six equivalent Er(1)C2N4 octahedra, edges with four equivalent Er(1)C2N4 octahedra, and edges with eight equivalent Th(1)C4N2 octahedra. The corner-sharing octahedra are not tilted. C(1) is bonded to four equivalent Th(1) and two equivalent Er(1) atoms to form CEr2Th4 octahedra that share corners with six equivalent C(1)Er2Th4 octahedra, edges with four equivalent C(1)Er2Th4 octahedra, and edges with eight equivalent N(1)Er4Th2 octahedra. The corner-sharing octahedra are not tilted. N(1) is bonded to two equivalent Th(1) and four equivalent Er(1) atoms to form NEr4Th2 octahedra that share corners with six equivalent N(1)Er4Th2 octahedra, edges with four equivalent N(1)Er4Th2 octahedra, and edges with eight equivalent C(1)Er2Th4 octahedra. The corner-sharing octahedra are not tilted.
ThErCN is alpha Po-derived structured and crystallizes in the tetragonal P4/mmm space group. Th(1) is bonded to four equivalent C(1) and two equivalent N(1) atoms to form ThC4N2 octahedra that share corners with six equivalent Th(1)C4N2 octahedra, edges with four equivalent Th(1)C4N2 octahedra, and edges with eight equivalent Er(1)C2N4 octahedra. The corner-sharing octahedra are not tilted. All Th(1)-C(1) bond lengths are 2.58 Å. Both Th(1)-N(1) bond lengths are 2.54 Å. Er(1) is bonded to two equivalent C(1) and four equivalent N(1) atoms to form ErC2N4 octahedra that share corners with six equivalent Er(1)C2N4 octahedra, edges with four equivalent Er(1)C2N4 octahedra, and edges with eight equivalent Th(1)C4N2 octahedra. The corner-sharing octahedra are not tilted. Both Er(1)-C(1) bond lengths are 2.54 Å. All Er(1)-N(1) bond lengths are 2.58 Å. C(1) is bonded to four equivalent Th(1) and two equivalent Er(1) atoms to form CEr2Th4 octahedra that share corners with six equivalent C(1)Er2Th4 octahedra, edges with four equivalent C(1)Er2Th4 octahedra, and edges with eight equivalent N(1)Er4Th2 octahedra. The corner-sharing octahedra are not tilted. N(1) is bonded to two equivalent Th(1) and four equivalent Er(1) atoms to form NEr4Th2 octahedra that share corners with six equivalent N(1)Er4Th2 octahedra, edges with four equivalent N(1)Er4Th2 octahedra, and edges with eight equivalent C(1)Er2Th4 octahedra. The corner-sharing octahedra are not tilted.