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PtHg2 crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Pt2- is bonded in a distorted body-centered cubic geometry to eight equivalent Hg1+ atoms. All Pt–Hg bond lengths are 2.84 Å. Hg1+ is bonded in a 6-coordinate geometry to four equivalent Pt2- atoms.
PtHg4 crystallizes in the cubic Im-3m space group. The structure is three-dimensional. Pt is bonded in a body-centered cubic geometry to eight equivalent Hg atoms. All Pt–Hg bond lengths are 2.77 Å. Hg is bonded in a distorted linear geometry to two equivalent Pt atoms.
PtHg is Tetraauricupride structured and crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Pt2- is bonded to four equivalent Pt2- and eight equivalent Hg2+ atoms to form a mixture of distorted edge, corner, and face-sharing PtHg8Pt4 cuboctahedra. All Pt–Pt bond lengths are 3.02 Å. All Pt–Hg bond lengths are 2.92 Å. Hg2+ is bonded in a distorted body-centered cubic geometry to eight equivalent Pt2- atoms.
Pt3Hg is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Pt+0.67- is bonded to eight equivalent Pt+0.67- and four equivalent Hg2+ atoms to form PtHg4Pt8 cuboctahedra that share corners with twelve equivalent PtHg4Pt8 cuboctahedra, edges with eight equivalent HgPt12 cuboctahedra, edges with sixteen equivalent PtHg4Pt8 cuboctahedra, faces with four equivalent HgPt12 cuboctahedra, and faces with fourteen equivalent PtHg4Pt8 cuboctahedra. All Pt–Pt bond lengths are 2.88 Å. All Pt–Hg bond lengths are 2.88 Å. Hg2+ is bonded to twelve equivalent Pt+0.67- atoms to form HgPt12 cuboctahedra that share corners with twelve equivalent HgPt12 cuboctahedra, edges with twenty-four equivalent PtHg4Pt8 cuboctahedra, faces with six equivalent HgPt12 cuboctahedra, and faces with twelve equivalent PtHg4Pt8 cuboctahedra.
Pt3Hg crystallizes in the orthorhombic Cmmm space group. The structure is three-dimensional. there are two inequivalent Pt+0.67- sites. In the first Pt+0.67- site, Pt+0.67- is bonded to ten Pt+0.67- and two equivalent Hg2+ atoms to form PtHg2Pt10 cuboctahedra that share corners with twelve equivalent PtHg2Pt10 cuboctahedra, edges with four equivalent HgHg2Pt10 cuboctahedra, edges with twenty PtHg2Pt10 cuboctahedra, faces with eight equivalent HgHg2Pt10 cuboctahedra, and faces with ten PtHg2Pt10 cuboctahedra. There are eight shorter (2.86 Å) and two longer (2.91 Å) Pt–Pt bond lengths. Both Pt–Hg bond lengths are 2.91 Å. In the second Pt+0.67- site, Pt+0.67- is bonded to eight Pt+0.67- and four equivalent Hg2+ atoms to form distorted PtHg4Pt8 cuboctahedra that share corners with twelve equivalent PtHg4Pt8 cuboctahedra, edges with eight equivalent HgHg2Pt10 cuboctahedra, edges with sixteen PtHg2Pt10 cuboctahedra, faces with four equivalent HgHg2Pt10 cuboctahedra, and faces with fourteen PtHg2Pt10 cuboctahedra. All Pt–Pt bond lengths are 2.91 Å. All Pt–Hg bond lengths are 2.86 Å. Hg2+ is bonded to ten Pt+0.67- and two equivalent Hg2+ atoms to form distorted HgHg2Pt10 cuboctahedra that share corners with twelve equivalent HgHg2Pt10 cuboctahedra, edges with four equivalent HgHg2Pt10 cuboctahedra, edges with twenty PtHg2Pt10 cuboctahedra, faces with two equivalent HgHg2Pt10 cuboctahedra, and faces with sixteen PtHg2Pt10 cuboctahedra. Both Hg–Hg bond lengths are 2.91 Å.
PtHg3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Pt is bonded to twelve equivalent Hg atoms to form PtHg12 cuboctahedra that share corners with twelve equivalent PtHg12 cuboctahedra, edges with twenty-four equivalent HgHg8Pt4 cuboctahedra, faces with six equivalent PtHg12 cuboctahedra, and faces with twelve equivalent HgHg8Pt4 cuboctahedra. All Pt–Hg bond lengths are 3.07 Å. Hg is bonded to four equivalent Pt and eight equivalent Hg atoms to form HgHg8Pt4 cuboctahedra that share corners with twelve equivalent HgHg8Pt4 cuboctahedra, edges with eight equivalent PtHg12 cuboctahedra, edges with sixteen equivalent HgHg8Pt4 cuboctahedra, faces with four equivalent PtHg12 cuboctahedra, and faces with fourteen equivalent HgHg8Pt4 cuboctahedra. All Hg–Hg bond lengths are 3.07 Å.