K2Mg(CO3)2 crystallizes in the trigonal R-3m space group. K(1) is bonded in a 9-coordinate geometry to nine 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 2-coordinate geometry to three equivalent K(1), one Mg(1), and one C(1) atom.
K2Mg(CO3)2 crystallizes in the trigonal R-3m space group. K(1) is bonded in a 9-coordinate geometry to nine equivalent O(1) atoms. There are six shorter (2.73 Å) and three longer (2.91 Å) K(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 2.09 Å. C(1) is bonded in a trigonal planar geometry to three equivalent O(1) atoms. All C(1)-O(1) bond lengths are 1.29 Å. O(1) is bonded in a 2-coordinate geometry to three equivalent K(1), one Mg(1), and one C(1) atom.