The structure described by YAlGeO5 crystallizes in the orthorhombic Pbam space group. Y(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(4), and four equivalent O(3) atoms. Al(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form AlO6 octahedra that share corners with four equivalent Ge(1)O5 square pyramids and edges with two equivalent Al(1)O6 octahedra. Ge(1) is bonded to one O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted GeO5 square pyramids that share corners with four equivalent Al(1)O6 octahedra and  an edgeedge with one Ge(1)O5 square pyramid. The corner-sharing octahedral tilt angles range from 49-51°. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Y(1) and two equivalent Al(1) atoms to form distorted OY2Al2 trigonal pyramids that share corners with four equivalent O(3)Y2AlGe tetrahedra, corners with four equivalent O(4)Y2Ge2 tetrahedra, corners with two equivalent O(1)Y2Al2 trigonal pyramids, edges with four equivalent O(3)Y2AlGe tetrahedra, and  an edgeedge with one O(1)Y2Al2 trigonal pyramid. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Al(1) and one Ge(1) atom. In the third O site, O(3) is bonded to two equivalent Y(1), one Al(1), and one Ge(1) atom to form distorted OY2AlGe tetrahedra that share corners with four equivalent O(4)Y2Ge2 tetrahedra, corners with six equivalent O(3)Y2AlGe tetrahedra, corners with two equivalent O(1)Y2Al2 trigonal pyramids,  an edgeedge with one O(3)Y2AlGe tetrahedra,  an edgeedge with one O(4)Y2Ge2 tetrahedra, and edges with two equivalent O(1)Y2Al2 trigonal pyramids. In the fourth O site, O(4) is bonded to two equivalent Y(1) and two equivalent Ge(1) atoms to form distorted OY2Ge2 tetrahedra that share corners with eight equivalent O(3)Y2AlGe tetrahedra, corners with four equivalent O(1)Y2Al2 trigonal pyramids, edges with two equivalent O(3)Y2AlGe tetrahedra, and edges with two equivalent O(4)Y2Ge2 tetrahedra. is represented by the CIF card [CIF]
data_YAlGeO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.674
_cell_length_b   7.327
_cell_length_c   8.420
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   350.061
_cell_formula_units_Z   4
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
  Y  Y0  1  0.000  0.357  0.326  1.0
  Y  Y1  1  0.000  0.643  0.674  1.0
  Y  Y2  1  0.000  0.857  0.174  1.0
  Y  Y3  1  0.000  0.143  0.826  1.0
  Al  Al4  1  0.250  0.500  0.000  1.0
  Al  Al5  1  0.750  0.000  0.500  1.0
  Al  Al6  1  0.750  0.500  0.000  1.0
  Al  Al7  1  0.250  0.000  0.500  1.0
  Ge  Ge8  1  0.500  0.120  0.144  1.0
  Ge  Ge9  1  0.500  0.880  0.856  1.0
  Ge  Ge10  1  0.500  0.620  0.356  1.0
  Ge  Ge11  1  0.500  0.380  0.644  1.0
  O  O12  1  0.000  0.339  0.053  1.0
  O  O13  1  0.000  0.661  0.947  1.0
  O  O14  1  0.000  0.839  0.447  1.0
  O  O15  1  0.000  0.161  0.553  1.0
  O  O16  1  0.500  0.347  0.069  1.0
  O  O17  1  0.500  0.653  0.931  1.0
  O  O18  1  0.500  0.847  0.431  1.0
  O  O19  1  0.500  0.153  0.569  1.0
  O  O20  1  0.253  0.106  0.287  1.0
  O  O21  1  0.253  0.894  0.713  1.0
  O  O22  1  0.747  0.606  0.213  1.0
  O  O23  1  0.747  0.394  0.787  1.0
  O  O24  1  0.747  0.894  0.713  1.0
  O  O25  1  0.747  0.106  0.287  1.0
  O  O26  1  0.253  0.394  0.787  1.0
  O  O27  1  0.253  0.606  0.213  1.0
  O  O28  1  0.285  0.000  0.000  1.0
  O  O29  1  0.715  0.500  0.500  1.0
  O  O30  1  0.715  0.000  0.000  1.0
  O  O31  1  0.285  0.500  0.500  1.0
[/CIF]
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The structure described by YAlGeO5 crystallizes in the orthorhombic Pbam space group. Y(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(4), and four equivalent O(3) atoms. Al(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form AlO6 octahedra that share corners with four equivalent Ge(1)O5 square pyramids and edges with two equivalent Al(1)O6 octahedra. Ge(1) is bonded to one O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted GeO5 square pyramids that share corners with four equivalent Al(1)O6 octahedra and  an edgeedge with one Ge(1)O5 square pyramid. The corner-sharing octahedral tilt angles range from 49-51°. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Y(1) and two equivalent Al(1) atoms to form distorted OY2Al2 trigonal pyramids that share corners with four equivalent O(3)Y2AlGe tetrahedra, corners with four equivalent O(4)Y2Ge2 tetrahedra, corners with two equivalent O(1)Y2Al2 trigonal pyramids, edges with four equivalent O(3)Y2AlGe tetrahedra, and  an edgeedge with one O(1)Y2Al2 trigonal pyramid. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Al(1) and one Ge(1) atom. In the third O site, O(3) is bonded to two equivalent Y(1), one Al(1), and one Ge(1) atom to form distorted OY2AlGe tetrahedra that share corners with four equivalent O(4)Y2Ge2 tetrahedra, corners with six equivalent O(3)Y2AlGe tetrahedra, corners with two equivalent O(1)Y2Al2 trigonal pyramids,  an edgeedge with one O(3)Y2AlGe tetrahedra,  an edgeedge with one O(4)Y2Ge2 tetrahedra, and edges with two equivalent O(1)Y2Al2 trigonal pyramids. In the fourth O site, O(4) is bonded to two equivalent Y(1) and two equivalent Ge(1) atoms to form distorted OY2Ge2 tetrahedra that share corners with eight equivalent O(3)Y2AlGe tetrahedra, corners with four equivalent O(1)Y2Al2 trigonal pyramids, edges with two equivalent O(3)Y2AlGe tetrahedra, and edges with two equivalent O(4)Y2Ge2 tetrahedra. is represented by the CIF card [CIF]
data_YAlGeO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.674
_cell_length_b   7.327
_cell_length_c   8.420
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   350.061
_cell_formula_units_Z   4
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
  Y  Y0  1  0.000  0.357  0.326  1.0
  Y  Y1  1  0.000  0.643  0.674  1.0
  Y  Y2  1  0.000  0.857  0.174  1.0
  Y  Y3  1  0.000  0.143  0.826  1.0
  Al  Al4  1  0.250  0.500  0.000  1.0
  Al  Al5  1  0.750  0.000  0.500  1.0
  Al  Al6  1  0.750  0.500  0.000  1.0
  Al  Al7  1  0.250  0.000  0.500  1.0
  Ge  Ge8  1  0.500  0.120  0.144  1.0
  Ge  Ge9  1  0.500  0.880  0.856  1.0
  Ge  Ge10  1  0.500  0.620  0.356  1.0
  Ge  Ge11  1  0.500  0.380  0.644  1.0
  O  O12  1  0.000  0.339  0.053  1.0
  O  O13  1  0.000  0.661  0.947  1.0
  O  O14  1  0.000  0.839  0.447  1.0
  O  O15  1  0.000  0.161  0.553  1.0
  O  O16  1  0.500  0.347  0.069  1.0
  O  O17  1  0.500  0.653  0.931  1.0
  O  O18  1  0.500  0.847  0.431  1.0
  O  O19  1  0.500  0.153  0.569  1.0
  O  O20  1  0.253  0.106  0.287  1.0
  O  O21  1  0.253  0.894  0.713  1.0
  O  O22  1  0.747  0.606  0.213  1.0
  O  O23  1  0.747  0.394  0.787  1.0
  O  O24  1  0.747  0.894  0.713  1.0
  O  O25  1  0.747  0.106  0.287  1.0
  O  O26  1  0.253  0.394  0.787  1.0
  O  O27  1  0.253  0.606  0.213  1.0
  O  O28  1  0.285  0.000  0.000  1.0
  O  O29  1  0.715  0.500  0.500  1.0
  O  O30  1  0.715  0.000  0.000  1.0
  O  O31  1  0.285  0.500  0.500  1.0
[/CIF]
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