TbAgAs2 is Parent of FeAs superconductors-derived structured and crystallizes in the orthorhombic Pnma space group. Tb(1) is bonded in a 8-coordinate geometry to four equivalent Ag(1), four equivalent As(1), and four equivalent As(2) atoms. Ag(1) is bonded to four equivalent Tb(1), four equivalent Ag(1), and four equivalent As(2) atoms to form a mixture of distorted corner and face-sharing AgTb4Ag4As4 cuboctahedra. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 8-coordinate geometry to four equivalent Tb(1) and four equivalent As(1) atoms. In the second As site, As(2) is bonded in a 8-coordinate geometry to four equivalent Tb(1) and four equivalent Ag(1) atoms.
TbAgAs2 is Parent of FeAs superconductors-derived structured and crystallizes in the orthorhombic Pnma space group. Tb(1) is bonded in a 8-coordinate geometry to four equivalent Ag(1), four equivalent As(1), and four equivalent As(2) atoms. There are three shorter (3.48 Å) and one longer (3.49 Å) Tb(1)-Ag(1) bond length. There is one shorter (3.08 Å) and three longer (3.15 Å) Tb(1)-As(1) bond lengths. All Tb(1)-As(2) bond lengths are 2.96 Å. Ag(1) is bonded to four equivalent Tb(1), four equivalent Ag(1), and four equivalent As(2) atoms to form a mixture of distorted corner and face-sharing AgTb4Ag4As4 cuboctahedra. All Ag(1)-Ag(1) bond lengths are 2.83 Å. There are a spread of Ag(1)-As(2) bond distances ranging from 2.80-2.82 Å. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 8-coordinate geometry to four equivalent Tb(1) and four equivalent As(1) atoms. There are two shorter (2.66 Å) and two longer (3.01 Å) As(1)-As(1) bond lengths. In the second As site, As(2) is bonded in a 8-coordinate geometry to four equivalent Tb(1) and four equivalent Ag(1) atoms.