CaCO3 is Calcite-like structured and crystallizes in the monoclinic P2_1/c space group. Ca(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing CaO6 octahedra. The corner-sharing octahedral tilt angles range from 61-64°. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Ca(1) and one C(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Ca(1) and one C(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to two equivalent Ca(1) and one C(1) atom.
CaCO3 is Calcite-like structured and crystallizes in the monoclinic P2_1/c space group. Ca(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing CaO6 octahedra. The corner-sharing octahedral tilt angles range from 61-64°. There is one shorter (2.35 Å) and one longer (2.37 Å) Ca(1)-O(1) bond length. There is one shorter (2.35 Å) and one longer (2.37 Å) Ca(1)-O(2) bond length. Both Ca(1)-O(3) bond lengths are 2.36 Å. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. The C(1)-O(1) bond length is 1.29 Å. The C(1)-O(2) bond length is 1.29 Å. The C(1)-O(3) bond length is 1.29 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Ca(1) and one C(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Ca(1) and one C(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to two equivalent Ca(1) and one C(1) atom.