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DyHg2 crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. Dy is bonded to twelve equivalent Hg atoms to form a mixture of distorted edge and face-sharing DyHg12 cuboctahedra. All Dy–Hg bond lengths are 3.34 Å. Hg is bonded in a 9-coordinate geometry to six equivalent Dy and three equivalent Hg atoms. All Hg–Hg bond lengths are 2.86 Å.
DyHg is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Dy is bonded in a body-centered cubic geometry to eight equivalent Hg atoms. All Dy–Hg bond lengths are 3.23 Å. Hg is bonded in a body-centered cubic geometry to eight equivalent Dy atoms.
DyHg3 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Dy is bonded to twelve equivalent Hg atoms to form a mixture of face and corner-sharing DyHg12 cuboctahedra. There are six shorter (3.16 Å) and six longer (3.34 Å) Dy–Hg bond lengths. Hg is bonded in a 4-coordinate geometry to four equivalent Dy atoms.
DyHg2 crystallizes in the trigonal P-3m1 space group. The structure is two-dimensional and consists of one DyHg2 sheet oriented in the (0, 0, 1) direction. Dy is bonded in a distorted hexagonal planar geometry to six equivalent Hg atoms. All Dy–Hg bond lengths are 3.10 Å. Hg is bonded in a distorted trigonal planar geometry to three equivalent Dy atoms.
Dy3Hg is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Dy is bonded to eight equivalent Dy and four equivalent Hg atoms to form distorted DyDy8Hg4 cuboctahedra that share corners with twelve equivalent DyDy8Hg4 cuboctahedra, edges with eight equivalent HgDy12 cuboctahedra, edges with sixteen equivalent DyDy8Hg4 cuboctahedra, faces with four equivalent HgDy12 cuboctahedra, and faces with fourteen equivalent DyDy8Hg4 cuboctahedra. All Dy–Dy bond lengths are 3.40 Å. All Dy–Hg bond lengths are 3.40 Å. Hg is bonded to twelve equivalent Dy atoms to form HgDy12 cuboctahedra that share corners with twelve equivalent HgDy12 cuboctahedra, edges with twenty-four equivalent DyDy8Hg4 cuboctahedra, faces with six equivalent HgDy12 cuboctahedra, and faces with twelve equivalent DyDy8Hg4 cuboctahedra.