BaGe2 is hexagonal omega structure-like structured and crystallizes in the tetragonal I4_1/amd space group. Ba(1) is bonded to twelve Ge(1,1,1) atoms to form a mixture of edge and face-sharing BaGe12 cuboctahedra. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to six equivalent Ba(1) and three Ge(1,1) atoms. In the second Ge site, Ge(1) is bonded in a 9-coordinate geometry to six equivalent Ba(1) and three Ge(1,1) atoms. In the third Ge site, Ge(1) is bonded in a 9-coordinate geometry to six equivalent Ba(1) and three Ge(1,1) atoms. In the fourth Ge site, Ge(1) is bonded in a 9-coordinate geometry to six equivalent Ba(1) and three Ge(1,1) atoms.
BaGe2 is hexagonal omega structure-like structured and crystallizes in the tetragonal I4_1/amd space group. Ba(1) is bonded to twelve Ge(1,1,1) atoms to form a mixture of edge and face-sharing BaGe12 cuboctahedra. There are four shorter (3.44 Å) and eight longer (3.61 Å) Ba(1)-Ge(1,1,1) bond lengths. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to six equivalent Ba(1) and three Ge(1,1) atoms. There are two shorter (3.44 Å) and four longer (3.61 Å) Ge(1)-Ba(1) bond lengths. There is one shorter (2.45 Å) and two longer (2.71 Å) Ge(1)-Ge(1,1) bond lengths. In the second Ge site, Ge(1) is bonded in a 9-coordinate geometry to six equivalent Ba(1) and three Ge(1,1) atoms. There is one shorter (2.45 Å) and two longer (2.71 Å) Ge(1)-Ge(1,1) bond lengths. In the third Ge site, Ge(1) is bonded in a 9-coordinate geometry to six equivalent Ba(1) and three Ge(1,1) atoms. Both Ge(1)-Ge(1) bond lengths are 2.71 Å. In the fourth Ge site, Ge(1) is bonded in a 9-coordinate geometry to six equivalent Ba(1) and three Ge(1,1) atoms. The Ge(1)-Ge(1) bond length is 2.45 Å.