Materials Data on Cu(HO)2 by Materials Project
Cu(OH)2 crystallizes in the orthorhombic Cmc2_1 space group. The structure is two-dimensional and consists of two Cu(OH)2 sheets oriented in the (0, 1, 0) direction. Cu2+ is bonded to five O2- atoms to form a mixture of edge and corner-sharing CuO5 square pyramids. There are a spread of Cu–O bond distances ranging from 1.97–2.30 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Cu2+ and one H1+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent Cu2+ and one H1+ atom.