Ca19In8N7 crystallizes in the cubic Fm-3m space group. There are three inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a water-like geometry to four equivalent In(1) and two equivalent N(1) atoms. In the second Ca site, Ca(2) is bonded in a linear geometry to four equivalent In(1), one N(1), and one N(2) atom. In the third Ca site, Ca(3) is bonded in an octahedral geometry to six equivalent N(1) atoms. In(1) is bonded to three equivalent Ca(2), six equivalent Ca(1), and three equivalent In(1) atoms to form InCa9In3 cuboctahedra that share corners with three equivalent In(1)Ca9In3 cuboctahedra, corners with six equivalent N(1)Ca6 octahedra, edges with three equivalent In(1)Ca9In3 cuboctahedra, faces with six equivalent In(1)Ca9In3 cuboctahedra,  a faceface with one N(2)Ca6 octahedra, and faces with three equivalent N(1)Ca6 octahedra. The corner-sharing octahedral tilt angles are 48°. There are two inequivalent N sites. In the first N site, N(1) is bonded to one Ca(2), one Ca(3), and four equivalent Ca(1) atoms to form NCa6 octahedra that share corners with eight equivalent In(1)Ca9In3 cuboctahedra,  a cornercorner with one N(1)Ca6 octahedra,  a cornercorner with one N(2)Ca6 octahedra, edges with four equivalent N(1)Ca6 octahedra, and faces with four equivalent In(1)Ca9In3 cuboctahedra. The corner-sharing octahedra are not tilted. In the second N site, N(2) is bonded to six equivalent Ca(2) atoms to form NCa6 octahedra that share corners with six equivalent N(1)Ca6 octahedra and faces with eight equivalent In(1)Ca9In3 cuboctahedra. The corner-sharing octahedra are not tilted.
Ca19In8N7 crystallizes in the cubic Fm-3m space group. There are three inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a water-like geometry to four equivalent In(1) and two equivalent N(1) atoms. All Ca(1)-In(1) bond lengths are 3.50 Å. Both Ca(1)-N(1) bond lengths are 2.41 Å. In the second Ca site, Ca(2) is bonded in a linear geometry to four equivalent In(1), one N(1), and one N(2) atom. All Ca(2)-In(1) bond lengths are 3.65 Å. The Ca(2)-N(1) bond length is 2.35 Å. The Ca(2)-N(2) bond length is 2.45 Å. In the third Ca site, Ca(3) is bonded in an octahedral geometry to six equivalent N(1) atoms. All Ca(3)-N(1) bond lengths are 2.56 Å. In(1) is bonded to three equivalent Ca(2), six equivalent Ca(1), and three equivalent In(1) atoms to form InCa9In3 cuboctahedra that share corners with three equivalent In(1)Ca9In3 cuboctahedra, corners with six equivalent N(1)Ca6 octahedra, edges with three equivalent In(1)Ca9In3 cuboctahedra, faces with six equivalent In(1)Ca9In3 cuboctahedra,  a faceface with one N(2)Ca6 octahedra, and faces with three equivalent N(1)Ca6 octahedra. The corner-sharing octahedral tilt angles are 48°. All In(1)-In(1) bond lengths are 3.11 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded to one Ca(2), one Ca(3), and four equivalent Ca(1) atoms to form NCa6 octahedra that share corners with eight equivalent In(1)Ca9In3 cuboctahedra,  a cornercorner with one N(1)Ca6 octahedra,  a cornercorner with one N(2)Ca6 octahedra, edges with four equivalent N(1)Ca6 octahedra, and faces with four equivalent In(1)Ca9In3 cuboctahedra. The corner-sharing octahedra are not tilted. In the second N site, N(2) is bonded to six equivalent Ca(2) atoms to form NCa6 octahedra that share corners with six equivalent N(1)Ca6 octahedra and faces with eight equivalent In(1)Ca9In3 cuboctahedra. The corner-sharing octahedra are not tilted.