Pr6Fe13In crystallizes in the tetragonal I4/mcm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 13-coordinate geometry to four equivalent Fe(2), four equivalent Fe(3), four equivalent Fe(4), and one In(1) atom. In the second Pr site, Pr(2) is bonded in a 6-coordinate geometry to one Fe(3), three equivalent Fe(4), and two equivalent In(1) atoms. There are four inequivalent Fe sites. In the first Fe site, Fe(3) is bonded in a 12-coordinate geometry to one Pr(2), two equivalent Pr(1), one Fe(1), one Fe(3), three equivalent Fe(4), and four equivalent Fe(2) atoms. In the second Fe site, Fe(4) is bonded to two equivalent Pr(1), three equivalent Pr(2), one Fe(1), one Fe(4), two equivalent Fe(2), and three equivalent Fe(3) atoms to form distorted FePr5Fe7 cuboctahedra that share  a cornercorner with one Fe(1)Fe12 cuboctahedra, corners with three equivalent Fe(4)Pr5Fe7 cuboctahedra, corners with four equivalent Fe(2)Pr2Fe10 cuboctahedra,  a faceface with one Fe(1)Fe12 cuboctahedra, faces with six equivalent Fe(4)Pr5Fe7 cuboctahedra, and faces with eight equivalent Fe(2)Pr2Fe10 cuboctahedra. In the third Fe site, Fe(1) is bonded to four equivalent Fe(2), four equivalent Fe(3), and four equivalent Fe(4) atoms to form FeFe12 cuboctahedra that share corners with four equivalent Fe(2)Pr2Fe10 cuboctahedra, corners with four equivalent Fe(4)Pr5Fe7 cuboctahedra, faces with four equivalent Fe(4)Pr5Fe7 cuboctahedra, and faces with eight equivalent Fe(2)Pr2Fe10 cuboctahedra. In the fourth Fe site, Fe(2) is bonded to two equivalent Pr(1), one Fe(1), two equivalent Fe(4), three equivalent Fe(2), and four equivalent Fe(3) atoms to form FePr2Fe10 cuboctahedra that share  a cornercorner with one Fe(1)Fe12 cuboctahedra, corners with three equivalent Fe(2)Pr2Fe10 cuboctahedra, corners with four equivalent Fe(4)Pr5Fe7 cuboctahedra, faces with two equivalent Fe(1)Fe12 cuboctahedra, faces with seven equivalent Fe(2)Pr2Fe10 cuboctahedra, and faces with eight equivalent Fe(4)Pr5Fe7 cuboctahedra. In(1) is bonded in a distorted q6 geometry to two equivalent Pr(1) and eight equivalent Pr(2) atoms.
Pr6Fe13In crystallizes in the tetragonal I4/mcm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 13-coordinate geometry to four equivalent Fe(2), four equivalent Fe(3), four equivalent Fe(4), and one In(1) atom. All Pr(1)-Fe(2) bond lengths are 3.06 Å. All Pr(1)-Fe(3) bond lengths are 3.18 Å. All Pr(1)-Fe(4) bond lengths are 3.29 Å. The Pr(1)-In(1) bond length is 3.47 Å. In the second Pr site, Pr(2) is bonded in a 6-coordinate geometry to one Fe(3), three equivalent Fe(4), and two equivalent In(1) atoms. The Pr(2)-Fe(3) bond length is 3.02 Å. There are two shorter (3.16 Å) and one longer (3.38 Å) Pr(2)-Fe(4) bond length. Both Pr(2)-In(1) bond lengths are 3.42 Å. There are four inequivalent Fe sites. In the first Fe site, Fe(3) is bonded in a 12-coordinate geometry to one Pr(2), two equivalent Pr(1), one Fe(1), one Fe(3), three equivalent Fe(4), and four equivalent Fe(2) atoms. The Fe(3)-Fe(1) bond length is 2.47 Å. The Fe(3)-Fe(3) bond length is 2.75 Å. There is one shorter (2.53 Å) and two longer (2.56 Å) Fe(3)-Fe(4) bond lengths. There are two shorter (2.49 Å) and two longer (2.58 Å) Fe(3)-Fe(2) bond lengths. In the second Fe site, Fe(4) is bonded to two equivalent Pr(1), three equivalent Pr(2), one Fe(1), one Fe(4), two equivalent Fe(2), and three equivalent Fe(3) atoms to form distorted FePr5Fe7 cuboctahedra that share  a cornercorner with one Fe(1)Fe12 cuboctahedra, corners with three equivalent Fe(4)Pr5Fe7 cuboctahedra, corners with four equivalent Fe(2)Pr2Fe10 cuboctahedra,  a faceface with one Fe(1)Fe12 cuboctahedra, faces with six equivalent Fe(4)Pr5Fe7 cuboctahedra, and faces with eight equivalent Fe(2)Pr2Fe10 cuboctahedra. The Fe(4)-Fe(1) bond length is 2.55 Å. The Fe(4)-Fe(4) bond length is 2.58 Å. Both Fe(4)-Fe(2) bond lengths are 2.65 Å. In the third Fe site, Fe(1) is bonded to four equivalent Fe(2), four equivalent Fe(3), and four equivalent Fe(4) atoms to form FeFe12 cuboctahedra that share corners with four equivalent Fe(2)Pr2Fe10 cuboctahedra, corners with four equivalent Fe(4)Pr5Fe7 cuboctahedra, faces with four equivalent Fe(4)Pr5Fe7 cuboctahedra, and faces with eight equivalent Fe(2)Pr2Fe10 cuboctahedra. All Fe(1)-Fe(2) bond lengths are 2.41 Å. In the fourth Fe site, Fe(2) is bonded to two equivalent Pr(1), one Fe(1), two equivalent Fe(4), three equivalent Fe(2), and four equivalent Fe(3) atoms to form FePr2Fe10 cuboctahedra that share  a cornercorner with one Fe(1)Fe12 cuboctahedra, corners with three equivalent Fe(2)Pr2Fe10 cuboctahedra, corners with four equivalent Fe(4)Pr5Fe7 cuboctahedra, faces with two equivalent Fe(1)Fe12 cuboctahedra, faces with seven equivalent Fe(2)Pr2Fe10 cuboctahedra, and faces with eight equivalent Fe(4)Pr5Fe7 cuboctahedra. There are two shorter (2.53 Å) and one longer (2.56 Å) Fe(2)-Fe(2) bond length. In(1) is bonded in a distorted q6 geometry to two equivalent Pr(1) and eight equivalent Pr(2) atoms.