Rb2Na(NO3)3 crystallizes in the orthorhombic Pmc2_1 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 11-coordinate geometry to one O(5), two equivalent O(1), two equivalent O(4), two equivalent O(6), and four equivalent O(2) atoms. In the second Rb site, Rb(2) is bonded in a 11-coordinate geometry to one O(5), two equivalent O(2), two equivalent O(3), two equivalent O(6), and four equivalent O(4) atoms. Na(1) is bonded to one O(1), one O(3), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms to form corner-sharing NaO8 hexagonal bipyramids. There are three inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one O(1) and two equivalent O(2) atoms. In the second N site, N(2) is bonded in a trigonal planar geometry to one O(3) and two equivalent O(4) atoms. In the third N site, N(3) is bonded in a trigonal planar geometry to one O(5) and two equivalent O(6) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Rb(1), one Na(1), and one N(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one N(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Rb(2), one Na(1), and one N(2) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Rb(1), two equivalent Rb(2), one Na(1), and one N(2) atom. In the fifth O site, O(5) is bonded to one Rb(1), one Rb(2), two equivalent Na(1), and one N(3) atom to form distorted corner-sharing ORb2Na2N trigonal bipyramids. In the sixth O site, O(6) is bonded in a 1-coordinate geometry to one Rb(1), one Rb(2), one Na(1), and one N(3) atom.
Rb2Na(NO3)3 crystallizes in the orthorhombic Pmc2_1 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 11-coordinate geometry to one O(5), two equivalent O(1), two equivalent O(4), two equivalent O(6), and four equivalent O(2) atoms. The Rb(1)-O(5) bond length is 3.00 Å. Both Rb(1)-O(1) bond lengths are 2.99 Å. Both Rb(1)-O(4) bond lengths are 3.27 Å. Both Rb(1)-O(6) bond lengths are 3.18 Å. There are two shorter (3.01 Å) and two longer (3.34 Å) Rb(1)-O(2) bond lengths. In the second Rb site, Rb(2) is bonded in a 11-coordinate geometry to one O(5), two equivalent O(2), two equivalent O(3), two equivalent O(6), and four equivalent O(4) atoms. The Rb(2)-O(5) bond length is 3.02 Å. Both Rb(2)-O(2) bond lengths are 3.05 Å. Both Rb(2)-O(3) bond lengths are 3.05 Å. Both Rb(2)-O(6) bond lengths are 3.13 Å. There are two shorter (3.28 Å) and two longer (3.41 Å) Rb(2)-O(4) bond lengths. Na(1) is bonded to one O(1), one O(3), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms to form corner-sharing NaO8 hexagonal bipyramids. The Na(1)-O(1) bond length is 2.37 Å. The Na(1)-O(3) bond length is 2.36 Å. Both Na(1)-O(4) bond lengths are 2.71 Å. Both Na(1)-O(5) bond lengths are 2.71 Å. Both Na(1)-O(6) bond lengths are 2.57 Å. There are three inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one O(1) and two equivalent O(2) atoms. The N(1)-O(1) bond length is 1.28 Å. Both N(1)-O(2) bond lengths are 1.26 Å. In the second N site, N(2) is bonded in a trigonal planar geometry to one O(3) and two equivalent O(4) atoms. The N(2)-O(3) bond length is 1.27 Å. Both N(2)-O(4) bond lengths are 1.27 Å. In the third N site, N(3) is bonded in a trigonal planar geometry to one O(5) and two equivalent O(6) atoms. The N(3)-O(5) bond length is 1.27 Å. Both N(3)-O(6) bond lengths are 1.27 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Rb(1), one Na(1), and one N(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one N(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Rb(2), one Na(1), and one N(2) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Rb(1), two equivalent Rb(2), one Na(1), and one N(2) atom. In the fifth O site, O(5) is bonded to one Rb(1), one Rb(2), two equivalent Na(1), and one N(3) atom to form distorted corner-sharing ORb2Na2N trigonal bipyramids. In the sixth O site, O(6) is bonded in a 1-coordinate geometry to one Rb(1), one Rb(2), one Na(1), and one N(3) atom.