Co3Ti is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Ti(1) is bonded to twelve Co(1,1) atoms to form TiCo12 cuboctahedra that share corners with six equivalent Ti(1)Co12 cuboctahedra; corners with twelve equivalent Co(1)Ti4Co8 cuboctahedra; edges with eighteen Co(1,1)Ti4Co8 cuboctahedra; faces with eight equivalent Ti(1)Co12 cuboctahedra; and faces with twelve Co(1,1)Ti4Co8 cuboctahedra. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to four equivalent Ti(1) and eight Co(1,1) atoms to form distorted CoTi4Co8 cuboctahedra that share corners with four equivalent Ti(1)Co12 cuboctahedra; corners with fourteen equivalent Co(1)Ti4Co8 cuboctahedra; edges with six equivalent Ti(1)Co12 cuboctahedra; edges with twelve Co(1,1)Ti4Co8 cuboctahedra; faces with four equivalent Ti(1)Co12 cuboctahedra; and faces with sixteen Co(1,1)Ti4Co8 cuboctahedra. In the second Co site, Co(1) is bonded to four equivalent Ti(1) and eight equivalent Co(1) atoms to form distorted CoTi4Co8 cuboctahedra that share corners with four equivalent Ti(1)Co12 cuboctahedra; corners with fourteen Co(1,1)Ti4Co8 cuboctahedra; edges with six equivalent Ti(1)Co12 cuboctahedra; edges with twelve equivalent Co(1)Ti4Co8 cuboctahedra; faces with four equivalent Ti(1)Co12 cuboctahedra; and faces with sixteen Co(1,1)Ti4Co8 cuboctahedra.
Co3Ti is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Ti(1) is bonded to twelve Co(1,1) atoms to form TiCo12 cuboctahedra that share corners with six equivalent Ti(1)Co12 cuboctahedra; corners with twelve equivalent Co(1)Ti4Co8 cuboctahedra; edges with eighteen Co(1,1)Ti4Co8 cuboctahedra; faces with eight equivalent Ti(1)Co12 cuboctahedra; and faces with twelve Co(1,1)Ti4Co8 cuboctahedra. There are six shorter (2.52 Å) and six longer (2.60 Å) Ti(1)-Co(1,1) bond lengths. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to four equivalent Ti(1) and eight Co(1,1) atoms to form distorted CoTi4Co8 cuboctahedra that share corners with four equivalent Ti(1)Co12 cuboctahedra; corners with fourteen equivalent Co(1)Ti4Co8 cuboctahedra; edges with six equivalent Ti(1)Co12 cuboctahedra; edges with twelve Co(1,1)Ti4Co8 cuboctahedra; faces with four equivalent Ti(1)Co12 cuboctahedra; and faces with sixteen Co(1,1)Ti4Co8 cuboctahedra. There are a spread of Co(1)-Co(1,1) bond distances ranging from 2.44-2.60 Å. In the second Co site, Co(1) is bonded to four equivalent Ti(1) and eight equivalent Co(1) atoms to form distorted CoTi4Co8 cuboctahedra that share corners with four equivalent Ti(1)Co12 cuboctahedra; corners with fourteen Co(1,1)Ti4Co8 cuboctahedra; edges with six equivalent Ti(1)Co12 cuboctahedra; edges with twelve equivalent Co(1)Ti4Co8 cuboctahedra; faces with four equivalent Ti(1)Co12 cuboctahedra; and faces with sixteen Co(1,1)Ti4Co8 cuboctahedra.