Ca(PtGe)2 crystallizes in the monoclinic P2_1 space group. Ca(1) is bonded in a 16-coordinate geometry to four equivalent Pt(1), four equivalent Pt(2), four equivalent Ge(1), and four equivalent Ge(2) atoms. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 4-coordinate geometry to four equivalent Ca(1) and four equivalent Ge(1) atoms. In the second Pt site, Pt(2) is bonded in a 9-coordinate geometry to four equivalent Ca(1), one Ge(1), and four equivalent Ge(2) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to four equivalent Ca(1), one Pt(2), and four equivalent Pt(1) atoms. In the second Ge site, Ge(2) is bonded in a 4-coordinate geometry to four equivalent Ca(1) and four equivalent Pt(2) atoms.
Ca(PtGe)2 crystallizes in the monoclinic P2_1 space group. Ca(1) is bonded in a 16-coordinate geometry to four equivalent Pt(1), four equivalent Pt(2), four equivalent Ge(1), and four equivalent Ge(2) atoms. There are a spread of Ca(1)-Pt(1) bond distances ranging from 3.34-3.43 Å. There are a spread of Ca(1)-Pt(2) bond distances ranging from 3.21-3.29 Å. There are a spread of Ca(1)-Ge(1) bond distances ranging from 3.21-3.33 Å. There are a spread of Ca(1)-Ge(2) bond distances ranging from 3.33-3.42 Å. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 4-coordinate geometry to four equivalent Ca(1) and four equivalent Ge(1) atoms. There are a spread of Pt(1)-Ge(1) bond distances ranging from 2.53-2.56 Å. In the second Pt site, Pt(2) is bonded in a 9-coordinate geometry to four equivalent Ca(1), one Ge(1), and four equivalent Ge(2) atoms. The Pt(2)-Ge(1) bond length is 2.44 Å. There are a spread of Pt(2)-Ge(2) bond distances ranging from 2.54-2.56 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to four equivalent Ca(1), one Pt(2), and four equivalent Pt(1) atoms. In the second Ge site, Ge(2) is bonded in a 4-coordinate geometry to four equivalent Ca(1) and four equivalent Pt(2) atoms.