OsSb2 is zeta iron carbide structured and crystallizes in the orthorhombic Pnnm space group. Os(1) is bonded to six equivalent Sb(1) atoms to form a mixture of corner and edge-sharing OsSb6 octahedra. The corner-sharing octahedral tilt angles are 52°. Sb(1) is bonded in a 3-coordinate geometry to three equivalent Os(1) atoms.
OsSb2 is zeta iron carbide structured and crystallizes in the orthorhombic Pnnm space group. Os(1) is bonded to six equivalent Sb(1) atoms to form a mixture of corner and edge-sharing OsSb6 octahedra. The corner-sharing octahedral tilt angles are 52°. There are two shorter (2.64 Å) and four longer (2.67 Å) Os(1)-Sb(1) bond lengths. Sb(1) is bonded in a 3-coordinate geometry to three equivalent Os(1) atoms.