Ho4PdGe8 crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 10-coordinate geometry to two equivalent Ge(2), two equivalent Ge(5), two equivalent Ge(7), and four equivalent Ge(3) atoms. In the second Ho site, Ho(2) is bonded in a 10-coordinate geometry to two equivalent Ge(1), two equivalent Ge(6), two equivalent Ge(8), and four equivalent Ge(4) atoms. In the third Ho site, Ho(3) is bonded in a 14-coordinate geometry to four equivalent Pd(1), two equivalent Ge(4), two equivalent Ge(5), two equivalent Ge(7), and four equivalent Ge(1) atoms. In the fourth Ho site, Ho(4) is bonded in a 10-coordinate geometry to two equivalent Ge(3), two equivalent Ge(6), two equivalent Ge(8), and four equivalent Ge(2) atoms. Pd(1) is bonded in a 9-coordinate geometry to four equivalent Ho(3), one Ge(1), two equivalent Ge(5), and two equivalent Ge(7) atoms. There are eight inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Ho(2), four equivalent Ho(3), one Pd(1), and two equivalent Ge(4) atoms. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to two equivalent Ho(1), four equivalent Ho(4), and two equivalent Ge(3) atoms. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to two equivalent Ho(4), four equivalent Ho(1), and two equivalent Ge(2) atoms. In the fourth Ge site, Ge(4) is bonded in a 8-coordinate geometry to two equivalent Ho(3), four equivalent Ho(2), and two equivalent Ge(1) atoms. In the fifth Ge site, Ge(5) is bonded in a 4-coordinate geometry to two equivalent Ho(1), two equivalent Ho(3), and two equivalent Pd(1) atoms. In the sixth Ge site, Ge(6) is bonded in a 8-coordinate geometry to two equivalent Ho(2), two equivalent Ho(4), and four equivalent Ge(8) atoms. In the seventh Ge site, Ge(7) is bonded in a distorted square co-planar geometry to two equivalent Ho(1), two equivalent Ho(3), and two equivalent Pd(1) atoms. In the eighth Ge site, Ge(8) is bonded in a 8-coordinate geometry to two equivalent Ho(2), two equivalent Ho(4), and four equivalent Ge(6) atoms.
Ho4PdGe8 crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 10-coordinate geometry to two equivalent Ge(2), two equivalent Ge(5), two equivalent Ge(7), and four equivalent Ge(3) atoms. Both Ho(1)-Ge(2) bond lengths are 3.24 Å. Both Ho(1)-Ge(5) bond lengths are 3.00 Å. Both Ho(1)-Ge(7) bond lengths are 2.95 Å. All Ho(1)-Ge(3) bond lengths are 2.98 Å. In the second Ho site, Ho(2) is bonded in a 10-coordinate geometry to two equivalent Ge(1), two equivalent Ge(6), two equivalent Ge(8), and four equivalent Ge(4) atoms. Both Ho(2)-Ge(1) bond lengths are 3.11 Å. Both Ho(2)-Ge(6) bond lengths are 3.07 Å. Both Ho(2)-Ge(8) bond lengths are 3.13 Å. All Ho(2)-Ge(4) bond lengths are 2.95 Å. In the third Ho site, Ho(3) is bonded in a 14-coordinate geometry to four equivalent Pd(1), two equivalent Ge(4), two equivalent Ge(5), two equivalent Ge(7), and four equivalent Ge(1) atoms. All Ho(3)-Pd(1) bond lengths are 3.16 Å. Both Ho(3)-Ge(4) bond lengths are 3.41 Å. Both Ho(3)-Ge(5) bond lengths are 3.47 Å. Both Ho(3)-Ge(7) bond lengths are 3.51 Å. All Ho(3)-Ge(1) bond lengths are 3.07 Å. In the fourth Ho site, Ho(4) is bonded in a 10-coordinate geometry to two equivalent Ge(3), two equivalent Ge(6), two equivalent Ge(8), and four equivalent Ge(2) atoms. Both Ho(4)-Ge(3) bond lengths are 3.26 Å. Both Ho(4)-Ge(6) bond lengths are 3.13 Å. Both Ho(4)-Ge(8) bond lengths are 3.07 Å. All Ho(4)-Ge(2) bond lengths are 2.99 Å. Pd(1) is bonded in a 9-coordinate geometry to four equivalent Ho(3), one Ge(1), two equivalent Ge(5), and two equivalent Ge(7) atoms. The Pd(1)-Ge(1) bond length is 2.44 Å. Both Pd(1)-Ge(5) bond lengths are 2.54 Å. Both Pd(1)-Ge(7) bond lengths are 2.51 Å. There are eight inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Ho(2), four equivalent Ho(3), one Pd(1), and two equivalent Ge(4) atoms. Both Ge(1)-Ge(4) bond lengths are 2.57 Å. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to two equivalent Ho(1), four equivalent Ho(4), and two equivalent Ge(3) atoms. Both Ge(2)-Ge(3) bond lengths are 2.61 Å. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to two equivalent Ho(4), four equivalent Ho(1), and two equivalent Ge(2) atoms. In the fourth Ge site, Ge(4) is bonded in a 8-coordinate geometry to two equivalent Ho(3), four equivalent Ho(2), and two equivalent Ge(1) atoms. In the fifth Ge site, Ge(5) is bonded in a 4-coordinate geometry to two equivalent Ho(1), two equivalent Ho(3), and two equivalent Pd(1) atoms. In the sixth Ge site, Ge(6) is bonded in a 8-coordinate geometry to two equivalent Ho(2), two equivalent Ho(4), and four equivalent Ge(8) atoms. All Ge(6)-Ge(8) bond lengths are 2.87 Å. In the seventh Ge site, Ge(7) is bonded in a distorted square co-planar geometry to two equivalent Ho(1), two equivalent Ho(3), and two equivalent Pd(1) atoms. In the eighth Ge site, Ge(8) is bonded in a 8-coordinate geometry to two equivalent Ho(2), two equivalent Ho(4), and four equivalent Ge(6) atoms.