GdAuAs2 crystallizes in the orthorhombic Cmce space group. Gd(1) is bonded to four equivalent Au(1), four equivalent As(1), and four equivalent As(2) atoms to form distorted GdAs8Au4 cuboctahedra that share corners with four equivalent Gd(1)As8Au4 cuboctahedra, edges with eight equivalent Gd(1)As8Au4 cuboctahedra, edges with eight equivalent Au(1)Gd4As4Au4 cuboctahedra, faces with four equivalent Gd(1)As8Au4 cuboctahedra, and faces with four equivalent Au(1)Gd4As4Au4 cuboctahedra. Au(1) is bonded to four equivalent Gd(1), four equivalent Au(1), and four equivalent As(1) atoms to form distorted AuGd4As4Au4 cuboctahedra that share corners with four equivalent Au(1)Gd4As4Au4 cuboctahedra, edges with eight equivalent Gd(1)As8Au4 cuboctahedra, faces with four equivalent Gd(1)As8Au4 cuboctahedra, and faces with eight equivalent Au(1)Gd4As4Au4 cuboctahedra. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 8-coordinate geometry to four equivalent Gd(1) and four equivalent Au(1) atoms. In the second As site, As(2) is bonded in a 7-coordinate geometry to four equivalent Gd(1) and three equivalent As(2) atoms.
GdAuAs2 crystallizes in the orthorhombic Cmce space group. Gd(1) is bonded to four equivalent Au(1), four equivalent As(1), and four equivalent As(2) atoms to form distorted GdAs8Au4 cuboctahedra that share corners with four equivalent Gd(1)As8Au4 cuboctahedra, edges with eight equivalent Gd(1)As8Au4 cuboctahedra, edges with eight equivalent Au(1)Gd4As4Au4 cuboctahedra, faces with four equivalent Gd(1)As8Au4 cuboctahedra, and faces with four equivalent Au(1)Gd4As4Au4 cuboctahedra. There are two shorter (3.38 Å) and two longer (3.40 Å) Gd(1)-Au(1) bond lengths. There are two shorter (2.96 Å) and two longer (2.97 Å) Gd(1)-As(1) bond lengths. There are two shorter (3.12 Å) and two longer (3.17 Å) Gd(1)-As(2) bond lengths. Au(1) is bonded to four equivalent Gd(1), four equivalent Au(1), and four equivalent As(1) atoms to form distorted AuGd4As4Au4 cuboctahedra that share corners with four equivalent Au(1)Gd4As4Au4 cuboctahedra, edges with eight equivalent Gd(1)As8Au4 cuboctahedra, faces with four equivalent Gd(1)As8Au4 cuboctahedra, and faces with eight equivalent Au(1)Gd4As4Au4 cuboctahedra. All Au(1)-Au(1) bond lengths are 2.86 Å. There are two shorter (2.80 Å) and two longer (2.82 Å) Au(1)-As(1) bond lengths. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 8-coordinate geometry to four equivalent Gd(1) and four equivalent Au(1) atoms. In the second As site, As(2) is bonded in a 7-coordinate geometry to four equivalent Gd(1) and three equivalent As(2) atoms. There is one shorter (2.60 Å) and two longer (2.87 Å) As(2)-As(2) bond lengths.