Na2Mg(CO3)2 crystallizes in the trigonal R-3 space group. Na(1) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. Mg(1) is bonded in an octahedral geometry to six equivalent O(1) atoms. C(1) is bonded in a trigonal planar geometry to three equivalent O(1) atoms. O(1) is bonded in a 4-coordinate geometry to two equivalent Na(1), one Mg(1), and one C(1) atom.
Na2Mg(CO3)2 crystallizes in the trigonal R-3 space group. Na(1) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. There are three shorter (2.35 Å) and three longer (2.65 Å) Na(1)-O(1) bond lengths. Mg(1) is bonded in an octahedral geometry to six equivalent O(1) atoms. All Mg(1)-O(1) bond lengths are 2.10 Å. C(1) is bonded in a trigonal planar geometry to three equivalent O(1) atoms. All C(1)-O(1) bond lengths are 1.30 Å. O(1) is bonded in a 4-coordinate geometry to two equivalent Na(1), one Mg(1), and one C(1) atom.