Materials Data on Mn3SiW2 by Materials Project
W2Mn3Si crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. W is bonded in a 12-coordinate geometry to nine equivalent Mn and three equivalent Si atoms. There are three shorter (2.77 Å) and six longer (2.79 Å) W–Mn bond lengths. All W–Si bond lengths are 2.80 Å. Mn is bonded to six equivalent W, four equivalent Mn, and two equivalent Si atoms to form distorted MnMn4Si2W6 cuboctahedra that share corners with four equivalent SiMn6W6 cuboctahedra, corners with fourteen equivalent MnMn4Si2W6 cuboctahedra, edges with six equivalent MnMn4Si2W6 cuboctahedra, faces with six equivalent SiMn6W6 cuboctahedra, and faces with twelve equivalent MnMn4Si2W6 cuboctahedra. There are two shorter (2.32 Å) and two longer (2.46 Å) Mn–Mn bond lengths. Both Mn–Si bond lengths are 2.40 Å. Si is bonded to six equivalent W and six equivalent Mn atoms to form SiMn6W6 cuboctahedra that share corners with twelve equivalent MnMn4Si2W6 cuboctahedra, edges with six equivalent SiMn6W6 cuboctahedra, faces with two equivalent SiMn6W6 cuboctahedra, and faces with eighteen equivalent MnMn4Si2W6 cuboctahedra.