The compound described by SrGaH4 crystallizes in the orthorhombic Pnma space group. Sr(1) is bonded in a 10-coordinate geometry to three equivalent H(2), three equivalent H(3), and four equivalent H(1) atoms. Ga(1) is bonded in a rectangular see-saw-like geometry to one H(2), one H(3), and two equivalent H(1) atoms. There are three inequivalent H sites. In the first H site, H(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Sr(1) and one Ga(1) atom. In the second H site, H(2) is bonded to three equivalent Sr(1) and one Ga(1) atom to form a mixture of distorted edge and corner-sharing HSr3Ga trigonal pyramids. In the third H site, H(3) is bonded to three equivalent Sr(1) and one Ga(1) atom to form a mixture of distorted edge and corner-sharing HSr3Ga tetrahedra. is represented by the CIF file [CIF]
data_SrGaH4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.418
_cell_length_b   4.418
_cell_length_c   8.787
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   115.191
_symmetry_Int_Tables_number   1
_cell_volume   155.220
_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
  Ga  Ga0  1  0.646  0.854  0.750  1.0
  Ga  Ga1  1  0.354  0.146  0.250  1.0
  H  H2  1  0.763  0.266  0.250  1.0
  H  H3  1  0.766  0.263  0.750  1.0
  H  H4  1  0.671  0.829  0.954  1.0
  H  H5  1  0.329  0.171  0.046  1.0
  H  H6  1  0.671  0.829  0.546  1.0
  H  H7  1  0.329  0.171  0.454  1.0
  H  H8  1  0.234  0.737  0.250  1.0
  H  H9  1  0.237  0.734  0.750  1.0
  Sr  Sr10  1  0.000  0.500  0.000  1.0
  Sr  Sr11  1  0.000  0.500  0.500  1.0
[/CIF]
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The compound described by SrGaH4 crystallizes in the orthorhombic Pnma space group. Sr(1) is bonded in a 10-coordinate geometry to three equivalent H(2), three equivalent H(3), and four equivalent H(1) atoms. Ga(1) is bonded in a rectangular see-saw-like geometry to one H(2), one H(3), and two equivalent H(1) atoms. There are three inequivalent H sites. In the first H site, H(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Sr(1) and one Ga(1) atom. In the second H site, H(2) is bonded to three equivalent Sr(1) and one Ga(1) atom to form a mixture of distorted edge and corner-sharing HSr3Ga trigonal pyramids. In the third H site, H(3) is bonded to three equivalent Sr(1) and one Ga(1) atom to form a mixture of distorted edge and corner-sharing HSr3Ga tetrahedra. is represented by the CIF file [CIF]
data_SrGaH4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.418
_cell_length_b   4.418
_cell_length_c   8.787
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   115.191
_symmetry_Int_Tables_number   1
_cell_volume   155.220
_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
  Ga  Ga0  1  0.646  0.854  0.750  1.0
  Ga  Ga1  1  0.354  0.146  0.250  1.0
  H  H2  1  0.763  0.266  0.250  1.0
  H  H3  1  0.766  0.263  0.750  1.0
  H  H4  1  0.671  0.829  0.954  1.0
  H  H5  1  0.329  0.171  0.046  1.0
  H  H6  1  0.671  0.829  0.546  1.0
  H  H7  1  0.329  0.171  0.454  1.0
  H  H8  1  0.234  0.737  0.250  1.0
  H  H9  1  0.237  0.734  0.750  1.0
  Sr  Sr10  1  0.000  0.500  0.000  1.0
  Sr  Sr11  1  0.000  0.500  0.500  1.0
[/CIF]
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