Ca5Ge3H crystallizes in the tetragonal I4/mcm space group. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a distorted square co-planar geometry to four equivalent Ge(2) atoms. In the second Ca site, Ca(2) is bonded in a distorted single-bond geometry to two equivalent Ge(1), three equivalent Ge(2), and one H(1) atom. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to eight equivalent Ca(2) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Ca(1), six equivalent Ca(2), and one Ge(2) atom. H(1) is bonded in a tetrahedral geometry to four equivalent Ca(2) atoms.
Ca5Ge3H crystallizes in the tetragonal I4/mcm space group. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a distorted square co-planar geometry to four equivalent Ge(2) atoms. All Ca(1)-Ge(2) bond lengths are 3.09 Å. In the second Ca site, Ca(2) is bonded in a distorted single-bond geometry to two equivalent Ge(1), three equivalent Ge(2), and one H(1) atom. Both Ca(2)-Ge(1) bond lengths are 3.22 Å. There are two shorter (3.11 Å) and one longer (3.21 Å) Ca(2)-Ge(2) bond length. The Ca(2)-H(1) bond length is 2.33 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to eight equivalent Ca(2) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Ca(1), six equivalent Ca(2), and one Ge(2) atom. The Ge(2)-Ge(2) bond length is 2.53 Å. H(1) is bonded in a tetrahedral geometry to four equivalent Ca(2) atoms.