Co2(GeS)3 is Hausmannite-derived structured and crystallizes in the trigonal R-3 space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one Ge(2), two equivalent Ge(1), one S(1), and two equivalent S(2) atoms to form CoGe3S3 octahedra that share corners with two equivalent Co(2)Ge3S3 octahedra, corners with four equivalent Co(1)Ge3S3 octahedra, corners with two equivalent Ge(1)Co2S2 tetrahedra, corners with two equivalent S(2)Co2Ge2 tetrahedra, corners with four equivalent Ge(2)Co2S2 tetrahedra, and corners with four equivalent S(1)Co2Ge2 tetrahedra. The corner-sharing octahedral tilt angles range from 55-60°. In the second Co site, Co(2) is bonded to three equivalent Ge(2) and three equivalent S(1) atoms to form CoGe3S3 octahedra that share corners with six equivalent Co(1)Ge3S3 octahedra, corners with six equivalent Ge(1)Co2S2 tetrahedra, and corners with six equivalent S(2)Co2Ge2 tetrahedra. The corner-sharing octahedral tilt angles range from 55-60°. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to two equivalent Co(1) and two equivalent S(1) atoms to form distorted GeCo2S2 tetrahedra that share corners with two equivalent Co(1)Ge3S3 octahedra, corners with two equivalent Co(2)Ge3S3 octahedra, corners with two equivalent Ge(1)Co2S2 tetrahedra, corners with two equivalent Ge(2)Co2S2 tetrahedra, corners with two equivalent S(1)Co2Ge2 tetrahedra, corners with four equivalent S(2)Co2Ge2 tetrahedra, and  an edgeedge with one Ge(1)Co2S2 tetrahedra. The corner-sharing octahedral tilt angles range from 69-73°. In the second Ge site, Ge(2) is bonded to one Co(1), one Co(2), and two equivalent S(2) atoms to form distorted GeCo2S2 tetrahedra that share corners with four equivalent Co(1)Ge3S3 octahedra, corners with two equivalent Ge(1)Co2S2 tetrahedra, corners with two equivalent Ge(2)Co2S2 tetrahedra, corners with two equivalent S(2)Co2Ge2 tetrahedra, corners with four equivalent S(1)Co2Ge2 tetrahedra, and  an edgeedge with one Ge(2)Co2S2 tetrahedra. The corner-sharing octahedral tilt angles range from 68-71°. There are two inequivalent S sites. In the first S site, S(1) is bonded to one Co(1), one Co(2), and two equivalent Ge(1) atoms to form distorted SCo2Ge2 tetrahedra that share corners with four equivalent Co(1)Ge3S3 octahedra, corners with two equivalent Ge(1)Co2S2 tetrahedra, corners with two equivalent S(1)Co2Ge2 tetrahedra, corners with two equivalent S(2)Co2Ge2 tetrahedra, corners with four equivalent Ge(2)Co2S2 tetrahedra, and  an edgeedge with one S(1)Co2Ge2 tetrahedra. The corner-sharing octahedral tilt angles range from 66-73°. In the second S site, S(2) is bonded to two equivalent Co(1) and two equivalent Ge(2) atoms to form distorted SCo2Ge2 tetrahedra that share corners with two equivalent Co(1)Ge3S3 octahedra, corners with two equivalent Co(2)Ge3S3 octahedra, corners with two equivalent Ge(2)Co2S2 tetrahedra, corners with two equivalent S(1)Co2Ge2 tetrahedra, corners with two equivalent S(2)Co2Ge2 tetrahedra, corners with four equivalent Ge(1)Co2S2 tetrahedra, and  an edgeedge with one S(2)Co2Ge2 tetrahedra. The corner-sharing octahedral tilt angles range from 68-74°.
Co2(GeS)3 is Hausmannite-derived structured and crystallizes in the trigonal R-3 space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one Ge(2), two equivalent Ge(1), one S(1), and two equivalent S(2) atoms to form CoGe3S3 octahedra that share corners with two equivalent Co(2)Ge3S3 octahedra, corners with four equivalent Co(1)Ge3S3 octahedra, corners with two equivalent Ge(1)Co2S2 tetrahedra, corners with two equivalent S(2)Co2Ge2 tetrahedra, corners with four equivalent Ge(2)Co2S2 tetrahedra, and corners with four equivalent S(1)Co2Ge2 tetrahedra. The corner-sharing octahedral tilt angles range from 55-60°. The Co(1)-Ge(2) bond length is 2.30 Å. There is one shorter (2.30 Å) and one longer (2.32 Å) Co(1)-Ge(1) bond length. The Co(1)-S(1) bond length is 2.26 Å. There is one shorter (2.23 Å) and one longer (2.26 Å) Co(1)-S(2) bond length. In the second Co site, Co(2) is bonded to three equivalent Ge(2) and three equivalent S(1) atoms to form CoGe3S3 octahedra that share corners with six equivalent Co(1)Ge3S3 octahedra, corners with six equivalent Ge(1)Co2S2 tetrahedra, and corners with six equivalent S(2)Co2Ge2 tetrahedra. The corner-sharing octahedral tilt angles range from 55-60°. All Co(2)-Ge(2) bond lengths are 2.31 Å. All Co(2)-S(1) bond lengths are 2.23 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to two equivalent Co(1) and two equivalent S(1) atoms to form distorted GeCo2S2 tetrahedra that share corners with two equivalent Co(1)Ge3S3 octahedra, corners with two equivalent Co(2)Ge3S3 octahedra, corners with two equivalent Ge(1)Co2S2 tetrahedra, corners with two equivalent Ge(2)Co2S2 tetrahedra, corners with two equivalent S(1)Co2Ge2 tetrahedra, corners with four equivalent S(2)Co2Ge2 tetrahedra, and  an edgeedge with one Ge(1)Co2S2 tetrahedra. The corner-sharing octahedral tilt angles range from 69-73°. There is one shorter (2.37 Å) and one longer (2.56 Å) Ge(1)-S(1) bond length. In the second Ge site, Ge(2) is bonded to one Co(1), one Co(2), and two equivalent S(2) atoms to form distorted GeCo2S2 tetrahedra that share corners with four equivalent Co(1)Ge3S3 octahedra, corners with two equivalent Ge(1)Co2S2 tetrahedra, corners with two equivalent Ge(2)Co2S2 tetrahedra, corners with two equivalent S(2)Co2Ge2 tetrahedra, corners with four equivalent S(1)Co2Ge2 tetrahedra, and  an edgeedge with one Ge(2)Co2S2 tetrahedra. The corner-sharing octahedral tilt angles range from 68-71°. There is one shorter (2.37 Å) and one longer (2.56 Å) Ge(2)-S(2) bond length. There are two inequivalent S sites. In the first S site, S(1) is bonded to one Co(1), one Co(2), and two equivalent Ge(1) atoms to form distorted SCo2Ge2 tetrahedra that share corners with four equivalent Co(1)Ge3S3 octahedra, corners with two equivalent Ge(1)Co2S2 tetrahedra, corners with two equivalent S(1)Co2Ge2 tetrahedra, corners with two equivalent S(2)Co2Ge2 tetrahedra, corners with four equivalent Ge(2)Co2S2 tetrahedra, and  an edgeedge with one S(1)Co2Ge2 tetrahedra. The corner-sharing octahedral tilt angles range from 66-73°. In the second S site, S(2) is bonded to two equivalent Co(1) and two equivalent Ge(2) atoms to form distorted SCo2Ge2 tetrahedra that share corners with two equivalent Co(1)Ge3S3 octahedra, corners with two equivalent Co(2)Ge3S3 octahedra, corners with two equivalent Ge(2)Co2S2 tetrahedra, corners with two equivalent S(1)Co2Ge2 tetrahedra, corners with two equivalent S(2)Co2Ge2 tetrahedra, corners with four equivalent Ge(1)Co2S2 tetrahedra, and  an edgeedge with one S(2)Co2Ge2 tetrahedra. The corner-sharing octahedral tilt angles range from 68-74°.