Co3Mo2Si is Hexagonal Laves-derived structured and crystallizes in the hexagonal P6_3/mmc space group. Mo(1) is bonded in a 16-coordinate geometry to four equivalent Mo(1), nine equivalent Co(1), and three equivalent Si(1) atoms. Co(1) is bonded to six equivalent Mo(1), four equivalent Co(1), and two equivalent Si(1) atoms to form CoCo4Si2Mo6 cuboctahedra that share corners with four equivalent Si(1)Co6Mo6 cuboctahedra, corners with fourteen equivalent Co(1)Co4Si2Mo6 cuboctahedra, edges with six equivalent Co(1)Co4Si2Mo6 cuboctahedra, faces with six equivalent Si(1)Co6Mo6 cuboctahedra, and faces with twelve equivalent Co(1)Co4Si2Mo6 cuboctahedra. Si(1) is bonded to six equivalent Mo(1) and six equivalent Co(1) atoms to form SiCo6Mo6 cuboctahedra that share corners with twelve equivalent Co(1)Co4Si2Mo6 cuboctahedra, edges with six equivalent Si(1)Co6Mo6 cuboctahedra, faces with two equivalent Si(1)Co6Mo6 cuboctahedra, and faces with eighteen equivalent Co(1)Co4Si2Mo6 cuboctahedra.
Co3Mo2Si is Hexagonal Laves-derived structured and crystallizes in the hexagonal P6_3/mmc space group. Mo(1) is bonded in a 16-coordinate geometry to four equivalent Mo(1), nine equivalent Co(1), and three equivalent Si(1) atoms. There is one shorter (2.68 Å) and three longer (2.90 Å) Mo(1)-Mo(1) bond lengths. There are three shorter (2.68 Å) and six longer (2.72 Å) Mo(1)-Co(1) bond lengths. All Mo(1)-Si(1) bond lengths are 2.77 Å. Co(1) is bonded to six equivalent Mo(1), four equivalent Co(1), and two equivalent Si(1) atoms to form CoCo4Si2Mo6 cuboctahedra that share corners with four equivalent Si(1)Co6Mo6 cuboctahedra, corners with fourteen equivalent Co(1)Co4Si2Mo6 cuboctahedra, edges with six equivalent Co(1)Co4Si2Mo6 cuboctahedra, faces with six equivalent Si(1)Co6Mo6 cuboctahedra, and faces with twelve equivalent Co(1)Co4Si2Mo6 cuboctahedra. There are two shorter (2.29 Å) and two longer (2.43 Å) Co(1)-Co(1) bond lengths. Both Co(1)-Si(1) bond lengths are 2.31 Å. Si(1) is bonded to six equivalent Mo(1) and six equivalent Co(1) atoms to form SiCo6Mo6 cuboctahedra that share corners with twelve equivalent Co(1)Co4Si2Mo6 cuboctahedra, edges with six equivalent Si(1)Co6Mo6 cuboctahedra, faces with two equivalent Si(1)Co6Mo6 cuboctahedra, and faces with eighteen equivalent Co(1)Co4Si2Mo6 cuboctahedra.