Nd4Os6O19 crystallizes in the orthorhombic I222 space group. Nd(1) is bonded in a 10-coordinate geometry to one O(1), one O(2), one O(3), one O(4), two equivalent O(5), two equivalent O(6), and two equivalent O(7) atoms. There are three inequivalent Os sites. In the first Os site, Os(1) is bonded to two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms to form a mixture of corner and edge-sharing OsO6 octahedra. The corner-sharing octahedral tilt angles are 56°. In the second Os site, Os(2) is bonded to two equivalent O(3), two equivalent O(6), and two equivalent O(7) atoms to form a mixture of corner and edge-sharing OsO6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. In the third Os site, Os(3) is bonded to two equivalent O(1), two equivalent O(5), and two equivalent O(7) atoms to form a mixture of corner and edge-sharing OsO6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Nd(1) and two equivalent Os(3) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Nd(1) and two equivalent Os(1) atoms. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Nd(1) and two equivalent Os(2) atoms. In the fourth O site, O(4) is bonded in a tetrahedral geometry to four equivalent Nd(1) atoms. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Nd(1), one Os(1), and one Os(3) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to two equivalent Nd(1), one Os(1), and one Os(2) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to two equivalent Nd(1), one Os(2), and one Os(3) atom.
Nd4Os6O19 crystallizes in the orthorhombic I222 space group. Nd(1) is bonded in a 10-coordinate geometry to one O(1), one O(2), one O(3), one O(4), two equivalent O(5), two equivalent O(6), and two equivalent O(7) atoms. The Nd(1)-O(1) bond length is 2.48 Å. The Nd(1)-O(2) bond length is 2.47 Å. The Nd(1)-O(3) bond length is 2.48 Å. The Nd(1)-O(4) bond length is 2.45 Å. There is one shorter (2.58 Å) and one longer (2.90 Å) Nd(1)-O(5) bond length. There is one shorter (2.58 Å) and one longer (2.89 Å) Nd(1)-O(6) bond length. There is one shorter (2.58 Å) and one longer (2.90 Å) Nd(1)-O(7) bond length. There are three inequivalent Os sites. In the first Os site, Os(1) is bonded to two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms to form a mixture of corner and edge-sharing OsO6 octahedra. The corner-sharing octahedral tilt angles are 56°. Both Os(1)-O(2) bond lengths are 2.03 Å. Both Os(1)-O(5) bond lengths are 1.99 Å. Both Os(1)-O(6) bond lengths are 1.96 Å. In the second Os site, Os(2) is bonded to two equivalent O(3), two equivalent O(6), and two equivalent O(7) atoms to form a mixture of corner and edge-sharing OsO6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. Both Os(2)-O(3) bond lengths are 2.02 Å. Both Os(2)-O(6) bond lengths are 1.99 Å. Both Os(2)-O(7) bond lengths are 1.96 Å. In the third Os site, Os(3) is bonded to two equivalent O(1), two equivalent O(5), and two equivalent O(7) atoms to form a mixture of corner and edge-sharing OsO6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. Both Os(3)-O(1) bond lengths are 2.03 Å. Both Os(3)-O(5) bond lengths are 1.96 Å. Both Os(3)-O(7) bond lengths are 1.98 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Nd(1) and two equivalent Os(3) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Nd(1) and two equivalent Os(1) atoms. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Nd(1) and two equivalent Os(2) atoms. In the fourth O site, O(4) is bonded in a tetrahedral geometry to four equivalent Nd(1) atoms. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Nd(1), one Os(1), and one Os(3) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to two equivalent Nd(1), one Os(1), and one Os(2) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to two equivalent Nd(1), one Os(2), and one Os(3) atom.