The structure described by CaBe2Ge2 crystallizes in the tetragonal P4/nmm space group. Ca(1) is bonded in a 16-coordinate geometry to four equivalent Be(1), four equivalent Be(2), four equivalent Ge(1), and four equivalent Ge(2) atoms. There are two inequivalent Be sites. In the first Be site, Be(1) is bonded in a 5-coordinate geometry to four equivalent Ca(1), one Ge(2), and four equivalent Ge(1) atoms. In the second Be site, Be(2) is bonded to four equivalent Ca(1) and four equivalent Ge(2) atoms to form distorted BeCa4Ge4 tetrahedra that share corners with twelve equivalent Ge(1)Ca4Be4 tetrahedra, edges with two equivalent Ge(1)Ca4Be4 tetrahedra, edges with four equivalent Be(2)Ca4Ge4 tetrahedra, and faces with four equivalent Be(2)Ca4Ge4 tetrahedra. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to four equivalent Ca(1) and four equivalent Be(1) atoms to form distorted GeCa4Be4 tetrahedra that share corners with twelve equivalent Be(2)Ca4Ge4 tetrahedra, edges with two equivalent Be(2)Ca4Ge4 tetrahedra, edges with four equivalent Ge(1)Ca4Be4 tetrahedra, and faces with four equivalent Ge(1)Ca4Be4 tetrahedra. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to four equivalent Ca(1), one Be(1), and four equivalent Be(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ca(BeGe)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.030
_cell_length_b   4.030
_cell_length_c   9.887
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   160.538
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Ca  Ca0  1  0.500  0.000  0.746  1.0
  Ca  Ca1  1  0.000  0.500  0.254  1.0
  Be  Be2  1  0.000  0.500  0.865  1.0
  Be  Be3  1  0.500  0.000  0.135  1.0
  Be  Be4  1  0.500  0.500  0.500  1.0
  Be  Be5  1  0.000  0.000  0.500  1.0
  Ge  Ge6  1  0.500  0.500  0.000  1.0
  Ge  Ge7  1  0.000  0.000  0.000  1.0
  Ge  Ge8  1  0.500  0.000  0.368  1.0
  Ge  Ge9  1  0.000  0.500  0.632  1.0
[/CIF]
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The structure described by CaBe2Ge2 crystallizes in the tetragonal P4/nmm space group. Ca(1) is bonded in a 16-coordinate geometry to four equivalent Be(1), four equivalent Be(2), four equivalent Ge(1), and four equivalent Ge(2) atoms. There are two inequivalent Be sites. In the first Be site, Be(1) is bonded in a 5-coordinate geometry to four equivalent Ca(1), one Ge(2), and four equivalent Ge(1) atoms. In the second Be site, Be(2) is bonded to four equivalent Ca(1) and four equivalent Ge(2) atoms to form distorted BeCa4Ge4 tetrahedra that share corners with twelve equivalent Ge(1)Ca4Be4 tetrahedra, edges with two equivalent Ge(1)Ca4Be4 tetrahedra, edges with four equivalent Be(2)Ca4Ge4 tetrahedra, and faces with four equivalent Be(2)Ca4Ge4 tetrahedra. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to four equivalent Ca(1) and four equivalent Be(1) atoms to form distorted GeCa4Be4 tetrahedra that share corners with twelve equivalent Be(2)Ca4Ge4 tetrahedra, edges with two equivalent Be(2)Ca4Ge4 tetrahedra, edges with four equivalent Ge(1)Ca4Be4 tetrahedra, and faces with four equivalent Ge(1)Ca4Be4 tetrahedra. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to four equivalent Ca(1), one Be(1), and four equivalent Be(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ca(BeGe)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.030
_cell_length_b   4.030
_cell_length_c   9.887
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   160.538
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Ca  Ca0  1  0.500  0.000  0.746  1.0
  Ca  Ca1  1  0.000  0.500  0.254  1.0
  Be  Be2  1  0.000  0.500  0.865  1.0
  Be  Be3  1  0.500  0.000  0.135  1.0
  Be  Be4  1  0.500  0.500  0.500  1.0
  Be  Be5  1  0.000  0.000  0.500  1.0
  Ge  Ge6  1  0.500  0.500  0.000  1.0
  Ge  Ge7  1  0.000  0.000  0.000  1.0
  Ge  Ge8  1  0.500  0.000  0.368  1.0
  Ge  Ge9  1  0.000  0.500  0.632  1.0
[/CIF]
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