Mn4Co4GeSi3 crystallizes in the monoclinic Pm space group. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 11-coordinate geometry to one Co(1), one Co(2), two equivalent Co(3), two equivalent Co(4), two equivalent Ge(1), one Si(2), and two equivalent Si(3) atoms. In the second Mn site, Mn(2) is bonded in a 11-coordinate geometry to one Co(1), one Co(2), two equivalent Co(3), two equivalent Co(4), two equivalent Ge(1), one Si(1), and two equivalent Si(3) atoms. In the third Mn site, Mn(3) is bonded in a 11-coordinate geometry to one Co(3), one Co(4), two equivalent Co(1), two equivalent Co(2), one Ge(1), two equivalent Si(1), and two equivalent Si(2) atoms. In the fourth Mn site, Mn(4) is bonded in a 11-coordinate geometry to one Co(3), one Co(4), two equivalent Co(1), two equivalent Co(2), one Si(3), two equivalent Si(1), and two equivalent Si(2) atoms. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded in a 10-coordinate geometry to one Mn(1), one Mn(2), two equivalent Mn(3), two equivalent Mn(4), one Si(1), one Si(2), and two equivalent Si(3) atoms. In the second Co site, Co(2) is bonded in a 10-coordinate geometry to one Mn(1), one Mn(2), two equivalent Mn(3), two equivalent Mn(4), two equivalent Ge(1), one Si(1), and one Si(2) atom. In the third Co site, Co(3) is bonded in a 10-coordinate geometry to one Mn(3), one Mn(4), two equivalent Mn(1), two equivalent Mn(2), one Ge(1), one Si(3), and two equivalent Si(1) atoms. In the fourth Co site, Co(4) is bonded in a 10-coordinate geometry to one Mn(3), one Mn(4), two equivalent Mn(1), two equivalent Mn(2), one Ge(1), one Si(3), and two equivalent Si(2) atoms. Ge(1) is bonded in a 9-coordinate geometry to one Mn(3), two equivalent Mn(1), two equivalent Mn(2), one Co(3), one Co(4), and two equivalent Co(2) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to one Mn(2), two equivalent Mn(3), two equivalent Mn(4), one Co(1), one Co(2), and two equivalent Co(3) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to one Mn(1), two equivalent Mn(3), two equivalent Mn(4), one Co(1), one Co(2), and two equivalent Co(4) atoms. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to one Mn(4), two equivalent Mn(1), two equivalent Mn(2), one Co(3), one Co(4), and two equivalent Co(1) atoms.
Mn4Co4GeSi3 crystallizes in the monoclinic Pm space group. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 11-coordinate geometry to one Co(1), one Co(2), two equivalent Co(3), two equivalent Co(4), two equivalent Ge(1), one Si(2), and two equivalent Si(3) atoms. The Mn(1)-Co(1) bond length is 2.69 Å. The Mn(1)-Co(2) bond length is 2.83 Å. Both Mn(1)-Co(3) bond lengths are 2.79 Å. Both Mn(1)-Co(4) bond lengths are 2.66 Å. Both Mn(1)-Ge(1) bond lengths are 2.56 Å. The Mn(1)-Si(2) bond length is 2.53 Å. Both Mn(1)-Si(3) bond lengths are 2.55 Å. In the second Mn site, Mn(2) is bonded in a 11-coordinate geometry to one Co(1), one Co(2), two equivalent Co(3), two equivalent Co(4), two equivalent Ge(1), one Si(1), and two equivalent Si(3) atoms. The Mn(2)-Co(1) bond length is 2.68 Å. The Mn(2)-Co(2) bond length is 2.78 Å. Both Mn(2)-Co(3) bond lengths are 2.76 Å. Both Mn(2)-Co(4) bond lengths are 2.80 Å. Both Mn(2)-Ge(1) bond lengths are 2.60 Å. The Mn(2)-Si(1) bond length is 2.53 Å. Both Mn(2)-Si(3) bond lengths are 2.52 Å. In the third Mn site, Mn(3) is bonded in a 11-coordinate geometry to one Co(3), one Co(4), two equivalent Co(1), two equivalent Co(2), one Ge(1), two equivalent Si(1), and two equivalent Si(2) atoms. The Mn(3)-Co(3) bond length is 2.64 Å. The Mn(3)-Co(4) bond length is 2.69 Å. Both Mn(3)-Co(1) bond lengths are 2.72 Å. Both Mn(3)-Co(2) bond lengths are 2.76 Å. The Mn(3)-Ge(1) bond length is 2.57 Å. Both Mn(3)-Si(1) bond lengths are 2.56 Å. Both Mn(3)-Si(2) bond lengths are 2.52 Å. In the fourth Mn site, Mn(4) is bonded in a 11-coordinate geometry to one Co(3), one Co(4), two equivalent Co(1), two equivalent Co(2), one Si(3), two equivalent Si(1), and two equivalent Si(2) atoms. The Mn(4)-Co(3) bond length is 2.68 Å. The Mn(4)-Co(4) bond length is 2.72 Å. Both Mn(4)-Co(1) bond lengths are 2.73 Å. Both Mn(4)-Co(2) bond lengths are 2.73 Å. The Mn(4)-Si(3) bond length is 2.53 Å. Both Mn(4)-Si(1) bond lengths are 2.53 Å. Both Mn(4)-Si(2) bond lengths are 2.56 Å. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded in a 10-coordinate geometry to one Mn(1), one Mn(2), two equivalent Mn(3), two equivalent Mn(4), one Si(1), one Si(2), and two equivalent Si(3) atoms. The Co(1)-Si(1) bond length is 2.29 Å. The Co(1)-Si(2) bond length is 2.27 Å. Both Co(1)-Si(3) bond lengths are 2.27 Å. In the second Co site, Co(2) is bonded in a 10-coordinate geometry to one Mn(1), one Mn(2), two equivalent Mn(3), two equivalent Mn(4), two equivalent Ge(1), one Si(1), and one Si(2) atom. Both Co(2)-Ge(1) bond lengths are 2.31 Å. The Co(2)-Si(1) bond length is 2.24 Å. The Co(2)-Si(2) bond length is 2.26 Å. In the third Co site, Co(3) is bonded in a 10-coordinate geometry to one Mn(3), one Mn(4), two equivalent Mn(1), two equivalent Mn(2), one Ge(1), one Si(3), and two equivalent Si(1) atoms. The Co(3)-Ge(1) bond length is 2.33 Å. The Co(3)-Si(3) bond length is 2.29 Å. Both Co(3)-Si(1) bond lengths are 2.25 Å. In the fourth Co site, Co(4) is bonded in a 10-coordinate geometry to one Mn(3), one Mn(4), two equivalent Mn(1), two equivalent Mn(2), one Ge(1), one Si(3), and two equivalent Si(2) atoms. The Co(4)-Ge(1) bond length is 2.37 Å. The Co(4)-Si(3) bond length is 2.29 Å. Both Co(4)-Si(2) bond lengths are 2.27 Å. Ge(1) is bonded in a 9-coordinate geometry to one Mn(3), two equivalent Mn(1), two equivalent Mn(2), one Co(3), one Co(4), and two equivalent Co(2) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to one Mn(2), two equivalent Mn(3), two equivalent Mn(4), one Co(1), one Co(2), and two equivalent Co(3) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to one Mn(1), two equivalent Mn(3), two equivalent Mn(4), one Co(1), one Co(2), and two equivalent Co(4) atoms. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to one Mn(4), two equivalent Mn(1), two equivalent Mn(2), one Co(3), one Co(4), and two equivalent Co(1) atoms.