Na2Ti2As2O is (La,Ba)CuO4-derived structured and crystallizes in the tetragonal I4/mmm space group. Na(1) is bonded in a 6-coordinate geometry to five equivalent As(1) and one O(1) atom. Ti(1) is bonded in a distorted linear geometry to four equivalent As(1) and two equivalent O(1) atoms. As(1) is bonded in a 9-coordinate geometry to five equivalent Na(1) and four equivalent Ti(1) atoms. O(1) is bonded to two equivalent Na(1) and four equivalent Ti(1) atoms to form distorted corner-sharing ONa2Ti4 octahedra. The corner-sharing octahedra are not tilted.
Na2Ti2As2O is (La,Ba)CuO4-derived structured and crystallizes in the tetragonal I4/mmm space group. Na(1) is bonded in a 6-coordinate geometry to five equivalent As(1) and one O(1) atom. There are four shorter (3.05 Å) and one longer (3.10 Å) Na(1)-As(1) bond length. The Na(1)-O(1) bond length is 2.82 Å. Ti(1) is bonded in a distorted linear geometry to four equivalent As(1) and two equivalent O(1) atoms. All Ti(1)-As(1) bond lengths are 2.73 Å. Both Ti(1)-O(1) bond lengths are 2.03 Å. As(1) is bonded in a 9-coordinate geometry to five equivalent Na(1) and four equivalent Ti(1) atoms. O(1) is bonded to two equivalent Na(1) and four equivalent Ti(1) atoms to form distorted corner-sharing ONa2Ti4 octahedra. The corner-sharing octahedra are not tilted.