The compound described by SrGa4O7 crystallizes in the monoclinic C2/c space group. Sr(1) is bonded in a 7-coordinate geometry to one O(1), two equivalent O(2), and four equivalent O(3) atoms. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(2), one O(4), and two equivalent O(3) atoms to form corner-sharing GaO4 tetrahedra. In the second Ga site, Ga(2) is bonded to one O(1), one O(2), and two equivalent O(4) atoms to form corner-sharing GaO4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Sr(1) and two equivalent Ga(2) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Sr(1), one Ga(1), and one Ga(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Sr(1) and two equivalent Ga(1) atoms. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Ga(1) and two equivalent Ga(2) atoms. is represented by the CIF card [CIF]
data_SrGa4O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.183
_cell_length_b   8.183
_cell_length_c   5.723
_cell_angle_alpha   77.050
_cell_angle_beta   77.050
_cell_angle_gamma   68.747
_symmetry_Int_Tables_number   1
_cell_volume   343.788
_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
  Sr  Sr0  1  0.313  0.687  0.750  1.0
  Sr  Sr1  1  0.687  0.313  0.250  1.0
  Ga  Ga2  1  0.757  0.580  0.703  1.0
  Ga  Ga3  1  0.420  0.243  0.797  1.0
  Ga  Ga4  1  0.243  0.420  0.297  1.0
  Ga  Ga5  1  0.580  0.757  0.203  1.0
  Ga  Ga6  1  0.059  0.180  0.741  1.0
  Ga  Ga7  1  0.820  0.941  0.759  1.0
  Ga  Ga8  1  0.180  0.059  0.241  1.0
  Ga  Ga9  1  0.941  0.820  0.259  1.0
  O  O10  1  0.035  0.965  0.750  1.0
  O  O11  1  0.965  0.035  0.250  1.0
  O  O12  1  0.878  0.363  0.854  1.0
  O  O13  1  0.637  0.122  0.646  1.0
  O  O14  1  0.122  0.637  0.146  1.0
  O  O15  1  0.363  0.878  0.354  1.0
  O  O16  1  0.338  0.430  0.553  1.0
  O  O17  1  0.570  0.662  0.947  1.0
  O  O18  1  0.748  0.874  0.094  1.0
  O  O19  1  0.126  0.252  0.406  1.0
  O  O20  1  0.252  0.126  0.906  1.0
  O  O21  1  0.874  0.748  0.594  1.0
  O  O22  1  0.430  0.338  0.053  1.0
  O  O23  1  0.662  0.570  0.447  1.0
[/CIF]
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The compound described by SrGa4O7 crystallizes in the monoclinic C2/c space group. Sr(1) is bonded in a 7-coordinate geometry to one O(1), two equivalent O(2), and four equivalent O(3) atoms. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(2), one O(4), and two equivalent O(3) atoms to form corner-sharing GaO4 tetrahedra. In the second Ga site, Ga(2) is bonded to one O(1), one O(2), and two equivalent O(4) atoms to form corner-sharing GaO4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Sr(1) and two equivalent Ga(2) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Sr(1), one Ga(1), and one Ga(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Sr(1) and two equivalent Ga(1) atoms. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Ga(1) and two equivalent Ga(2) atoms. is represented by the CIF card [CIF]
data_SrGa4O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.183
_cell_length_b   8.183
_cell_length_c   5.723
_cell_angle_alpha   77.050
_cell_angle_beta   77.050
_cell_angle_gamma   68.747
_symmetry_Int_Tables_number   1
_cell_volume   343.788
_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
  Sr  Sr0  1  0.313  0.687  0.750  1.0
  Sr  Sr1  1  0.687  0.313  0.250  1.0
  Ga  Ga2  1  0.757  0.580  0.703  1.0
  Ga  Ga3  1  0.420  0.243  0.797  1.0
  Ga  Ga4  1  0.243  0.420  0.297  1.0
  Ga  Ga5  1  0.580  0.757  0.203  1.0
  Ga  Ga6  1  0.059  0.180  0.741  1.0
  Ga  Ga7  1  0.820  0.941  0.759  1.0
  Ga  Ga8  1  0.180  0.059  0.241  1.0
  Ga  Ga9  1  0.941  0.820  0.259  1.0
  O  O10  1  0.035  0.965  0.750  1.0
  O  O11  1  0.965  0.035  0.250  1.0
  O  O12  1  0.878  0.363  0.854  1.0
  O  O13  1  0.637  0.122  0.646  1.0
  O  O14  1  0.122  0.637  0.146  1.0
  O  O15  1  0.363  0.878  0.354  1.0
  O  O16  1  0.338  0.430  0.553  1.0
  O  O17  1  0.570  0.662  0.947  1.0
  O  O18  1  0.748  0.874  0.094  1.0
  O  O19  1  0.126  0.252  0.406  1.0
  O  O20  1  0.252  0.126  0.906  1.0
  O  O21  1  0.874  0.748  0.594  1.0
  O  O22  1  0.430  0.338  0.053  1.0
  O  O23  1  0.662  0.570  0.447  1.0
[/CIF]
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