Cu2SiO4 crystallizes in the tetragonal I-42m space group. Cu(1) is bonded to four equivalent O(1) atoms to form distorted CuO4 trigonal pyramids that share corners with four equivalent Si(1)O4 tetrahedra and corners with four equivalent Cu(1)O4 trigonal pyramids. Si(1) is bonded to four equivalent O(1) atoms to form SiO4 tetrahedra that share corners with eight equivalent Cu(1)O4 trigonal pyramids. O(1) is bonded in a distorted trigonal planar geometry to two equivalent Cu(1) and one Si(1) atom.
Cu2SiO4 crystallizes in the tetragonal I-42m space group. Cu(1) is bonded to four equivalent O(1) atoms to form distorted CuO4 trigonal pyramids that share corners with four equivalent Si(1)O4 tetrahedra and corners with four equivalent Cu(1)O4 trigonal pyramids. All Cu(1)-O(1) bond lengths are 1.97 Å. Si(1) is bonded to four equivalent O(1) atoms to form SiO4 tetrahedra that share corners with eight equivalent Cu(1)O4 trigonal pyramids. All Si(1)-O(1) bond lengths are 1.65 Å. O(1) is bonded in a distorted trigonal planar geometry to two equivalent Cu(1) and one Si(1) atom.