Materials Data on USiOs2C by Materials Project
UOs2SiC crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. U4+ is bonded in a 4-coordinate geometry to four equivalent C4- atoms. All U–C bond lengths are 2.67 Å. Os2- is bonded in a 4-coordinate geometry to three equivalent Si4+ and one C4- atom. There are one shorter (2.45 Å) and two longer (2.47 Å) Os–Si bond lengths. The Os–C bond length is 1.90 Å. Si4+ is bonded in a 6-coordinate geometry to six equivalent Os2- atoms. C4- is bonded to four equivalent U4+ and two equivalent Os2- atoms to form a mixture of edge and corner-sharing CU4Os2 octahedra. The corner-sharing octahedral tilt angles are 26°.
36 MATERIALS SCIENCE↗