Materials Data on Na2Cu(CO3)2 by Materials Project

Abstract

Na2Cu(CO3)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Na1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Na–O bond distances ranging from 2.38–2.66 Å. Cu2+ is bonded in a square co-planar geometry to four O2- atoms. There is two shorter (1.95 Å) and two longer (1.98 Å) Cu–O bond length. C4+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of C–O bond distances ranging from 1.27–1.32 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to three equivalent Na1+ and one C4+ atom. In the second O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Na1+, one Cu2+, and one C4+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to one Na1+, one Cu2+, and one C4+ atom.