Na2Nd2PtO6 crystallizes in the monoclinic C2 space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms. In the third Na site, Na(3) is bonded in a 8-coordinate geometry to one O(2), one O(3), one O(4), one O(5), two equivalent O(1), and two equivalent O(6) atoms. There are three inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. In the second Nd site, Nd(2) is bonded in a 8-coordinate geometry to one O(1), one O(3), one O(5), one O(6), two equivalent O(2), and two equivalent O(4) atoms. In the third Nd site, Nd(3) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms. Pt(1) is bonded in an octahedral geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Na(1), two equivalent Na(3), one Nd(2), one Nd(3), and one Pt(1) atom to form ONa3Nd2Pt octahedra that share  a cornercorner with one O(1)Na3Nd2Pt octahedra,  a cornercorner with one O(6)Na3Nd2Pt octahedra, corners with two equivalent O(2)Na2Nd3Pt octahedra, corners with three equivalent O(4)Na2Nd3Pt octahedra, corners with five equivalent O(3)Na2Nd3Pt octahedra,  an edgeedge with one O(2)Na2Nd3Pt octahedra,  an edgeedge with one O(4)Na2Nd3Pt octahedra, edges with two equivalent O(6)Na3Nd2Pt octahedra,  a faceface with one O(2)Na2Nd3Pt octahedra,  a faceface with one O(3)Na2Nd3Pt octahedra,  a faceface with one O(1)Na3Nd2Pt octahedra, and  a faceface with one O(6)Na3Nd2Pt octahedra. The corner-sharing octahedral tilt angles range from 4-65°. In the second O site, O(2) is bonded to one Na(1), one Na(3), one Nd(1), two equivalent Nd(2), and one Pt(1) atom to form distorted ONa2Nd3Pt octahedra that share  a cornercorner with one O(4)Na2Nd3Pt octahedra, corners with two equivalent O(3)Na2Nd3Pt octahedra, corners with two equivalent O(1)Na3Nd2Pt octahedra, corners with three equivalent O(6)Na3Nd2Pt octahedra, corners with four equivalent O(2)Na2Nd3Pt octahedra,  an edgeedge with one O(1)Na3Nd2Pt octahedra,  an edgeedge with one O(6)Na3Nd2Pt octahedra, edges with two equivalent O(4)Na2Nd3Pt octahedra,  a faceface with one O(4)Na2Nd3Pt octahedra,  a faceface with one O(1)Na3Nd2Pt octahedra, and faces with two equivalent O(3)Na2Nd3Pt octahedra. The corner-sharing octahedral tilt angles range from 1-56°. In the third O site, O(3) is bonded to one Na(1), one Na(3), one Nd(1), one Nd(2), one Nd(3), and one Pt(1) atom to form distorted ONa2Nd3Pt octahedra that share  a cornercorner with one O(3)Na2Nd3Pt octahedra, corners with two equivalent O(2)Na2Nd3Pt octahedra, corners with three equivalent O(4)Na2Nd3Pt octahedra, corners with three equivalent O(6)Na3Nd2Pt octahedra, corners with five equivalent O(1)Na3Nd2Pt octahedra,  an edgeedge with one O(3)Na2Nd3Pt octahedra,  a faceface with one O(4)Na2Nd3Pt octahedra,  a faceface with one O(1)Na3Nd2Pt octahedra,  a faceface with one O(6)Na3Nd2Pt octahedra, and faces with two equivalent O(2)Na2Nd3Pt octahedra. The corner-sharing octahedral tilt angles range from 20-67°. In the fourth O site, O(4) is bonded to one Na(2), one Na(3), one Nd(1), two equivalent Nd(2), and one Pt(1) atom to form distorted ONa2Nd3Pt octahedra that share  a cornercorner with one O(2)Na2Nd3Pt octahedra,  a cornercorner with one O(4)Na2Nd3Pt octahedra, corners with two equivalent O(6)Na3Nd2Pt octahedra, corners with three equivalent O(3)Na2Nd3Pt octahedra, corners with three equivalent O(1)Na3Nd2Pt octahedra,  an edgeedge with one O(1)Na3Nd2Pt octahedra,  an edgeedge with one O(6)Na3Nd2Pt octahedra, edges with two equivalent O(2)Na2Nd3Pt octahedra,  a faceface with one O(2)Na2Nd3Pt octahedra,  a faceface with one O(3)Na2Nd3Pt octahedra,  a faceface with one O(4)Na2Nd3Pt octahedra, and  a faceface with one O(6)Na3Nd2Pt octahedra. The corner-sharing octahedral tilt angles range from 4-65°. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to one Na(2), one Na(3), one Nd(1), one Nd(2), one Nd(3), and one Pt(1) atom. In the sixth O site, O(6) is bonded to one Na(2), two equivalent Na(3), one Nd(2), one Nd(3), and one Pt(1) atom to form distorted ONa3Nd2Pt octahedra that share  a cornercorner with one O(1)Na3Nd2Pt octahedra, corners with two equivalent O(4)Na2Nd3Pt octahedra, corners with three equivalent O(2)Na2Nd3Pt octahedra, corners with three equivalent O(3)Na2Nd3Pt octahedra, corners with four equivalent O(6)Na3Nd2Pt octahedra,  an edgeedge with one O(2)Na2Nd3Pt octahedra,  an edgeedge with one O(4)Na2Nd3Pt octahedra, edges with two equivalent O(1)Na3Nd2Pt octahedra,  a faceface with one O(3)Na2Nd3Pt octahedra,  a faceface with one O(4)Na2Nd3Pt octahedra, and  a faceface with one O(1)Na3Nd2Pt octahedra. The corner-sharing octahedral tilt angles range from 1-67°.
Na2Nd2PtO6 crystallizes in the monoclinic C2 space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Both Na(1)-O(1) bond lengths are 2.33 Å. Both Na(1)-O(2) bond lengths are 2.42 Å. Both Na(1)-O(3) bond lengths are 2.37 Å. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms. Both Na(2)-O(4) bond lengths are 2.37 Å. Both Na(2)-O(5) bond lengths are 2.39 Å. Both Na(2)-O(6) bond lengths are 2.42 Å. In the third Na site, Na(3) is bonded in a 8-coordinate geometry to one O(2), one O(3), one O(4), one O(5), two equivalent O(1), and two equivalent O(6) atoms. The Na(3)-O(2) bond length is 2.50 Å. The Na(3)-O(3) bond length is 2.58 Å. The Na(3)-O(4) bond length is 2.59 Å. The Na(3)-O(5) bond length is 2.93 Å. There is one shorter (2.47 Å) and one longer (2.52 Å) Na(3)-O(1) bond length. There is one shorter (2.49 Å) and one longer (2.77 Å) Na(3)-O(6) bond length. There are three inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. Both Nd(1)-O(2) bond lengths are 2.48 Å. Both Nd(1)-O(3) bond lengths are 2.41 Å. Both Nd(1)-O(4) bond lengths are 2.65 Å. Both Nd(1)-O(5) bond lengths are 2.44 Å. In the second Nd site, Nd(2) is bonded in a 8-coordinate geometry to one O(1), one O(3), one O(5), one O(6), two equivalent O(2), and two equivalent O(4) atoms. The Nd(2)-O(1) bond length is 2.46 Å. The Nd(2)-O(3) bond length is 2.86 Å. The Nd(2)-O(5) bond length is 2.50 Å. The Nd(2)-O(6) bond length is 2.35 Å. There is one shorter (2.55 Å) and one longer (2.73 Å) Nd(2)-O(2) bond length. There is one shorter (2.38 Å) and one longer (2.57 Å) Nd(2)-O(4) bond length. In the third Nd site, Nd(3) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms. Both Nd(3)-O(1) bond lengths are 2.61 Å. Both Nd(3)-O(3) bond lengths are 2.55 Å. Both Nd(3)-O(5) bond lengths are 2.48 Å. Both Nd(3)-O(6) bond lengths are 2.49 Å. Pt(1) is bonded in an octahedral geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. The Pt(1)-O(1) bond length is 2.04 Å. The Pt(1)-O(2) bond length is 2.04 Å. The Pt(1)-O(3) bond length is 2.05 Å. The Pt(1)-O(4) bond length is 2.08 Å. The Pt(1)-O(5) bond length is 2.08 Å. The Pt(1)-O(6) bond length is 2.07 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Na(1), two equivalent Na(3), one Nd(2), one Nd(3), and one Pt(1) atom to form ONa3Nd2Pt octahedra that share  a cornercorner with one O(1)Na3Nd2Pt octahedra,  a cornercorner with one O(6)Na3Nd2Pt octahedra, corners with two equivalent O(2)Na2Nd3Pt octahedra, corners with three equivalent O(4)Na2Nd3Pt octahedra, corners with five equivalent O(3)Na2Nd3Pt octahedra,  an edgeedge with one O(2)Na2Nd3Pt octahedra,  an edgeedge with one O(4)Na2Nd3Pt octahedra, edges with two equivalent O(6)Na3Nd2Pt octahedra,  a faceface with one O(2)Na2Nd3Pt octahedra,  a faceface with one O(3)Na2Nd3Pt octahedra,  a faceface with one O(1)Na3Nd2Pt octahedra, and  a faceface with one O(6)Na3Nd2Pt octahedra. The corner-sharing octahedral tilt angles range from 4-65°. In the second O site, O(2) is bonded to one Na(1), one Na(3), one Nd(1), two equivalent Nd(2), and one Pt(1) atom to form distorted ONa2Nd3Pt octahedra that share  a cornercorner with one O(4)Na2Nd3Pt octahedra, corners with two equivalent O(3)Na2Nd3Pt octahedra, corners with two equivalent O(1)Na3Nd2Pt octahedra, corners with three equivalent O(6)Na3Nd2Pt octahedra, corners with four equivalent O(2)Na2Nd3Pt octahedra,  an edgeedge with one O(1)Na3Nd2Pt octahedra,  an edgeedge with one O(6)Na3Nd2Pt octahedra, edges with two equivalent O(4)Na2Nd3Pt octahedra,  a faceface with one O(4)Na2Nd3Pt octahedra,  a faceface with one O(1)Na3Nd2Pt octahedra, and faces with two equivalent O(3)Na2Nd3Pt octahedra. The corner-sharing octahedral tilt angles range from 1-56°. In the third O site, O(3) is bonded to one Na(1), one Na(3), one Nd(1), one Nd(2), one Nd(3), and one Pt(1) atom to form distorted ONa2Nd3Pt octahedra that share  a cornercorner with one O(3)Na2Nd3Pt octahedra, corners with two equivalent O(2)Na2Nd3Pt octahedra, corners with three equivalent O(4)Na2Nd3Pt octahedra, corners with three equivalent O(6)Na3Nd2Pt octahedra, corners with five equivalent O(1)Na3Nd2Pt octahedra,  an edgeedge with one O(3)Na2Nd3Pt octahedra,  a faceface with one O(4)Na2Nd3Pt octahedra,  a faceface with one O(1)Na3Nd2Pt octahedra,  a faceface with one O(6)Na3Nd2Pt octahedra, and faces with two equivalent O(2)Na2Nd3Pt octahedra. The corner-sharing octahedral tilt angles range from 20-67°. In the fourth O site, O(4) is bonded to one Na(2), one Na(3), one Nd(1), two equivalent Nd(2), and one Pt(1) atom to form distorted ONa2Nd3Pt octahedra that share  a cornercorner with one O(2)Na2Nd3Pt octahedra,  a cornercorner with one O(4)Na2Nd3Pt octahedra, corners with two equivalent O(6)Na3Nd2Pt octahedra, corners with three equivalent O(3)Na2Nd3Pt octahedra, corners with three equivalent O(1)Na3Nd2Pt octahedra,  an edgeedge with one O(1)Na3Nd2Pt octahedra,  an edgeedge with one O(6)Na3Nd2Pt octahedra, edges with two equivalent O(2)Na2Nd3Pt octahedra,  a faceface with one O(2)Na2Nd3Pt octahedra,  a faceface with one O(3)Na2Nd3Pt octahedra,  a faceface with one O(4)Na2Nd3Pt octahedra, and  a faceface with one O(6)Na3Nd2Pt octahedra. The corner-sharing octahedral tilt angles range from 4-65°. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to one Na(2), one Na(3), one Nd(1), one Nd(2), one Nd(3), and one Pt(1) atom. In the sixth O site, O(6) is bonded to one Na(2), two equivalent Na(3), one Nd(2), one Nd(3), and one Pt(1) atom to form distorted ONa3Nd2Pt octahedra that share  a cornercorner with one O(1)Na3Nd2Pt octahedra, corners with two equivalent O(4)Na2Nd3Pt octahedra, corners with three equivalent O(2)Na2Nd3Pt octahedra, corners with three equivalent O(3)Na2Nd3Pt octahedra, corners with four equivalent O(6)Na3Nd2Pt octahedra,  an edgeedge with one O(2)Na2Nd3Pt octahedra,  an edgeedge with one O(4)Na2Nd3Pt octahedra, edges with two equivalent O(1)Na3Nd2Pt octahedra,  a faceface with one O(3)Na2Nd3Pt octahedra,  a faceface with one O(4)Na2Nd3Pt octahedra, and  a faceface with one O(1)Na3Nd2Pt octahedra. The corner-sharing octahedral tilt angles range from 1-67°.