Materials Data on HoMn2SiC by Materials Project
HoMn2SiC crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Ho3+ is bonded in a 4-coordinate geometry to three equivalent Si4- and four equivalent C3- atoms. There are one shorter (2.96 Å) and two longer (2.98 Å) Ho–Si bond lengths. All Ho–C bond lengths are 2.59 Å. Mn2+ is bonded in a distorted single-bond geometry to three equivalent Si4- and one C3- atom. There are two shorter (2.38 Å) and one longer (2.41 Å) Mn–Si bond lengths. The Mn–C bond length is 1.83 Å. Si4- is bonded in a 9-coordinate geometry to three equivalent Ho3+ and six equivalent Mn2+ atoms. C3- is bonded to four equivalent Ho3+ and two equivalent Mn2+ atoms to form a mixture of corner and edge-sharing CHo4Mn2 octahedra. The corner-sharing octahedral tilt angles are 21°.