Materials Data on Na2Mg(CO3)2 by Materials Project
Na2Mg(CO3)2 crystallizes in the trigonal R-3 space group. The structure is three-dimensional. Na1+ is bonded in a 3-coordinate geometry to six equivalent O2- atoms. There are three shorter (2.35 Å) and three longer (2.65 Å) Na–O bond lengths. Mg2+ is bonded in an octahedral geometry to six equivalent O2- atoms. All Mg–O bond lengths are 2.10 Å. C4+ is bonded in a trigonal planar geometry to three equivalent O2- atoms. All C–O bond lengths are 1.30 Å. O2- is bonded in a 1-coordinate geometry to two equivalent Na1+, one Mg2+, and one C4+ atom.