Fe2C is zeta iron carbide structured and crystallizes in the orthorhombic Pnnm space group. Fe(1) is bonded in a distorted trigonal planar geometry to three equivalent C(1) atoms. C(1) is bonded to six equivalent Fe(1) atoms to form a mixture of corner and edge-sharing CFe6 octahedra. The corner-sharing octahedral tilt angles are 51°.
Fe2C is zeta iron carbide structured and crystallizes in the orthorhombic Pnnm space group. Fe(1) is bonded in a distorted trigonal planar geometry to three equivalent C(1) atoms. There are two shorter (1.92 Å) and one longer (1.94 Å) Fe(1)-C(1) bond length. C(1) is bonded to six equivalent Fe(1) atoms to form a mixture of corner and edge-sharing CFe6 octahedra. The corner-sharing octahedral tilt angles are 51°.