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YCu is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Y is bonded in a body-centered cubic geometry to eight equivalent Cu atoms. All Y–Cu bond lengths are 3.01 Å. Cu is bonded in a body-centered cubic geometry to eight equivalent Y atoms.
CuI crystallizes in the orthorhombic Cmcm space group. The structure is one-dimensional and consists of two CuI ribbons oriented in the (0, 0, 1) direction. Cu1+ is bonded in a distorted trigonal planar geometry to three equivalent I1- atoms. There are two shorter (2.60 Å) and one longer (2.63 Å) Cu–I bond lengths. I1- is bonded in a 3-coordinate geometry to three equivalent Cu1+ atoms.
YCu crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Y is bonded in a 7-coordinate geometry to seven equivalent Cu atoms. There are a spread of Y–Cu bond distances ranging from 2.87–3.04 Å. Cu is bonded in a 9-coordinate geometry to seven equivalent Y and two equivalent Cu atoms. Both Cu–Cu bond lengths are 2.64 Å.
CuI is Halite, Rock Salt structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Cu1+ is bonded to six equivalent I1- atoms to form a mixture of edge and corner-sharing CuI6 octahedra. The corner-sharing octahedral tilt angles are 0°. All Cu–I bond lengths are 2.86 Å. I1- is bonded to six equivalent Cu1+ atoms to form a mixture of edge and corner-sharing ICu6 octahedra. The corner-sharing octahedral tilt angles are 0°.
YCu2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Y is bonded in a 12-coordinate geometry to twelve equivalent Cu atoms. All Y–Cu bond lengths are 3.09 Å. Cu is bonded to six equivalent Y and six equivalent Cu atoms to form a mixture of corner, edge, and face-sharing CuY6Cu6 cuboctahedra. All Cu–Cu bond lengths are 2.64 Å.
CuI2 crystallizes in the tetragonal P4/mmm space group. The structure is two-dimensional and consists of one CuI2 sheet oriented in the (0, 0, 1) direction. Cu2+ is bonded in a square co-planar geometry to four equivalent I1- atoms. All Cu–I bond lengths are 2.60 Å. I1- is bonded in a linear geometry to two equivalent Cu2+ atoms.
CuI2 is Cyanogen Chloride-derived structured and crystallizes in the tetragonal P4/mmm space group. The structure is zero-dimensional and consists of one copper iodide molecule. Cu2+ is bonded in a linear geometry to two equivalent I1- atoms. Both Cu–I bond lengths are 2.39 Å. I1- is bonded in a single-bond geometry to one Cu2+ atom.