Mn3GeC crystallizes in the tetragonal I4/mcm space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Ge(1) and two equivalent C(1) atoms. In the second Mn site, Mn(2) is bonded in a distorted linear geometry to four equivalent Ge(1) and two equivalent C(1) atoms. Ge(1) is bonded in a 8-coordinate geometry to four equivalent Mn(1) and four equivalent Mn(2) atoms. C(1) is bonded to two equivalent Mn(2) and four equivalent Mn(1) atoms to form corner-sharing CMn6 octahedra. The corner-sharing octahedral tilt angles range from 0-28°.
Mn3GeC crystallizes in the tetragonal I4/mcm space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Ge(1) and two equivalent C(1) atoms. Both Mn(1)-Ge(1) bond lengths are 2.45 Å. Both Mn(1)-C(1) bond lengths are 1.92 Å. In the second Mn site, Mn(2) is bonded in a distorted linear geometry to four equivalent Ge(1) and two equivalent C(1) atoms. All Mn(2)-Ge(1) bond lengths are 2.64 Å. Both Mn(2)-C(1) bond lengths are 2.02 Å. Ge(1) is bonded in a 8-coordinate geometry to four equivalent Mn(1) and four equivalent Mn(2) atoms. C(1) is bonded to two equivalent Mn(2) and four equivalent Mn(1) atoms to form corner-sharing CMn6 octahedra. The corner-sharing octahedral tilt angles range from 0-28°.