Nd10Au3As8O10 crystallizes in the tetragonal I4/m space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 4-coordinate geometry to four equivalent As(2) and four equivalent O(1) atoms. In the second Nd site, Nd(2) is bonded in a 4-coordinate geometry to one Au(2), one As(2), two equivalent As(1), one O(2), and three equivalent O(1) atoms. There are two inequivalent Au sites. In the first Au site, Au(1) is bonded in a square co-planar geometry to four equivalent As(1) atoms. In the second Au site, Au(2) is bonded in a distorted body-centered cubic geometry to four equivalent Nd(2), two equivalent As(1), and two equivalent As(2) atoms. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 7-coordinate geometry to four equivalent Nd(2), one Au(1), one Au(2), and one As(2) atom. In the second As site, As(2) is bonded in a 6-coordinate geometry to two equivalent Nd(1), two equivalent Nd(2), one Au(2), and one As(1) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Nd(1) and three equivalent Nd(2) atoms to form a mixture of corner and edge-sharing ONd4 tetrahedra. In the second O site, O(2) is bonded to four equivalent Nd(2) atoms to form a mixture of corner and edge-sharing ONd4 tetrahedra.
Nd10Au3As8O10 crystallizes in the tetragonal I4/m space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 4-coordinate geometry to four equivalent As(2) and four equivalent O(1) atoms. All Nd(1)-As(2) bond lengths are 3.32 Å. All Nd(1)-O(1) bond lengths are 2.39 Å. In the second Nd site, Nd(2) is bonded in a 4-coordinate geometry to one Au(2), one As(2), two equivalent As(1), one O(2), and three equivalent O(1) atoms. The Nd(2)-Au(2) bond length is 3.34 Å. The Nd(2)-As(2) bond length is 3.21 Å. There is one shorter (3.31 Å) and one longer (3.37 Å) Nd(2)-As(1) bond length. The Nd(2)-O(2) bond length is 2.38 Å. There are a spread of Nd(2)-O(1) bond distances ranging from 2.33-2.37 Å. There are two inequivalent Au sites. In the first Au site, Au(1) is bonded in a square co-planar geometry to four equivalent As(1) atoms. All Au(1)-As(1) bond lengths are 2.58 Å. In the second Au site, Au(2) is bonded in a distorted body-centered cubic geometry to four equivalent Nd(2), two equivalent As(1), and two equivalent As(2) atoms. Both Au(2)-As(1) bond lengths are 2.62 Å. Both Au(2)-As(2) bond lengths are 2.64 Å. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 7-coordinate geometry to four equivalent Nd(2), one Au(1), one Au(2), and one As(2) atom. The As(1)-As(2) bond length is 2.60 Å. In the second As site, As(2) is bonded in a 6-coordinate geometry to two equivalent Nd(1), two equivalent Nd(2), one Au(2), and one As(1) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Nd(1) and three equivalent Nd(2) atoms to form a mixture of corner and edge-sharing ONd4 tetrahedra. In the second O site, O(2) is bonded to four equivalent Nd(2) atoms to form a mixture of corner and edge-sharing ONd4 tetrahedra.