Materials Data on CoCl2 by Materials Project
CoCl2 is trigonal omega structured and crystallizes in the monoclinic C2/m space group. The structure is two-dimensional and consists of one CoCl2 sheet oriented in the (0, 0, 1) direction. Co2+ is bonded to six equivalent Cl1- atoms to form edge-sharing CoCl6 octahedra. There are two shorter (2.42 Å) and four longer (2.44 Å) Co–Cl bond lengths. Cl1- is bonded in a distorted T-shaped geometry to three equivalent Co2+ atoms.