CaO crystallizes in the hexagonal P6_3/mmc space group. Ca(1) is bonded to five equivalent O(1) atoms to form a mixture of corner and edge-sharing CaO5 trigonal bipyramids. O(1) is bonded to five equivalent Ca(1) atoms to form a mixture of corner and edge-sharing OCa5 trigonal bipyramids.
CaO crystallizes in the hexagonal P6_3/mmc space group. Ca(1) is bonded to five equivalent O(1) atoms to form a mixture of corner and edge-sharing CaO5 trigonal bipyramids. There are three shorter (2.30 Å) and two longer (2.39 Å) Ca(1)-O(1) bond lengths. O(1) is bonded to five equivalent Ca(1) atoms to form a mixture of corner and edge-sharing OCa5 trigonal bipyramids.