HoAsSe is Matlockite structured and crystallizes in the orthorhombic Pmmn space group. Ho(1) is bonded in a 9-coordinate geometry to four equivalent As(1) and five equivalent Se(1) atoms. As(1) is bonded in a 8-coordinate geometry to four equivalent Ho(1) and four equivalent As(1) atoms. Se(1) is bonded to five equivalent Ho(1) atoms to form a mixture of distorted corner and edge-sharing SeHo5 trigonal bipyramids.
HoAsSe is Matlockite structured and crystallizes in the orthorhombic Pmmn space group. Ho(1) is bonded in a 9-coordinate geometry to four equivalent As(1) and five equivalent Se(1) atoms. There are two shorter (3.11 Å) and two longer (3.14 Å) Ho(1)-As(1) bond lengths. There are four shorter (2.89 Å) and one longer (3.03 Å) Ho(1)-Se(1) bond length. As(1) is bonded in a 8-coordinate geometry to four equivalent Ho(1) and four equivalent As(1) atoms. All As(1)-As(1) bond lengths are 2.76 Å. Se(1) is bonded to five equivalent Ho(1) atoms to form a mixture of distorted corner and edge-sharing SeHo5 trigonal bipyramids.