Materials Data on SmRe2SiC by Materials Project
SmRe2SiC crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Sm2+ is bonded in a 7-coordinate geometry to three equivalent Si4- and four equivalent C4- atoms. There are one shorter (3.04 Å) and two longer (3.14 Å) Sm–Si bond lengths. All Sm–C bond lengths are 2.76 Å. Re3+ is bonded in a single-bond geometry to three equivalent Si4- and one C4- atom. There are one shorter (2.49 Å) and two longer (2.52 Å) Re–Si bond lengths. The Re–C bond length is 1.96 Å. Si4- is bonded in a 9-coordinate geometry to three equivalent Sm2+ and six equivalent Re3+ atoms. C4- is bonded to four equivalent Sm2+ and two equivalent Re3+ atoms to form a mixture of corner and edge-sharing CSm4Re2 octahedra. The corner-sharing octahedral tilt angles are 20°.