BaPtGe3 crystallizes in the tetragonal I4mm space group. Ba(1) is bonded in a 17-coordinate geometry to five equivalent Pt(1), four equivalent Ge(2), and eight equivalent Ge(1) atoms. Pt(1) is bonded in a 5-coordinate geometry to five equivalent Ba(1), one Ge(2), and four equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to four equivalent Ba(1), two equivalent Pt(1), and two equivalent Ge(2) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to four equivalent Ba(1), one Pt(1), and four equivalent Ge(1) atoms.
BaPtGe3 crystallizes in the tetragonal I4mm space group. Ba(1) is bonded in a 17-coordinate geometry to five equivalent Pt(1), four equivalent Ge(2), and eight equivalent Ge(1) atoms. There are four shorter (3.59 Å) and one longer (3.62 Å) Ba(1)-Pt(1) bond length. All Ba(1)-Ge(2) bond lengths are 3.41 Å. There are four shorter (3.42 Å) and four longer (3.48 Å) Ba(1)-Ge(1) bond lengths. Pt(1) is bonded in a 5-coordinate geometry to five equivalent Ba(1), one Ge(2), and four equivalent Ge(1) atoms. The Pt(1)-Ge(2) bond length is 2.57 Å. All Pt(1)-Ge(1) bond lengths are 2.54 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to four equivalent Ba(1), two equivalent Pt(1), and two equivalent Ge(2) atoms. Both Ge(1)-Ge(2) bond lengths are 2.74 Å. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to four equivalent Ba(1), one Pt(1), and four equivalent Ge(1) atoms.