The compound described by Rb2GaAs2 crystallizes in the monoclinic P2_1/c space group. There are four inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 4-coordinate geometry to one As(2), one As(3), and two equivalent As(1) atoms. In the second Rb site, Rb(2) is bonded in a 9-coordinate geometry to one Ga(2), two equivalent Ga(1), one As(2), one As(4), two equivalent As(1), and two equivalent As(3) atoms. In the third Rb site, Rb(3) is bonded in a 5-coordinate geometry to one As(1), two equivalent As(2), and two equivalent As(4) atoms. In the fourth Rb site, Rb(4) is bonded in a 10-coordinate geometry to two equivalent Ga(1), two equivalent Ga(2), one As(1), one As(2), two equivalent As(3), and two equivalent As(4) atoms. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a distorted trigonal planar geometry to two equivalent Rb(2), two equivalent Rb(4), one As(1), one As(3), and one As(4) atom. In the second Ga site, Ga(2) is bonded in a distorted trigonal planar geometry to one Rb(2), two equivalent Rb(4), one As(1), one As(2), and one As(3) atom. There are four inequivalent As sites. In the first As site, As(4) is bonded in a 7-coordinate geometry to one Rb(2), two equivalent Rb(3), two equivalent Rb(4), one Ga(1), and one As(2) atom. In the second As site, As(1) is bonded in a 2-coordinate geometry to one Rb(3), one Rb(4), two equivalent Rb(1), two equivalent Rb(2), one Ga(1), and one Ga(2) atom. In the third As site, As(2) is bonded in a 1-coordinate geometry to one Rb(1), one Rb(2), one Rb(4), two equivalent Rb(3), one Ga(2), and one As(4) atom. In the fourth As site, As(3) is bonded in a 7-coordinate geometry to one Rb(1), two equivalent Rb(2), two equivalent Rb(4), one Ga(1), and one Ga(2) atom. is represented by the CIF card [CIF]
data_Rb2GaAs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.740
_cell_length_b   9.100
_cell_length_c   11.758
_cell_angle_alpha   61.723
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1389.051
_cell_formula_units_Z   8
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
  Rb  Rb0  1  0.616  0.493  0.568  1.0
  Rb  Rb1  1  0.116  0.507  0.932  1.0
  Rb  Rb2  1  0.384  0.507  0.432  1.0
  Rb  Rb3  1  0.884  0.493  0.068  1.0
  Rb  Rb4  1  0.613  0.212  0.974  1.0
  Rb  Rb5  1  0.113  0.788  0.526  1.0
  Rb  Rb6  1  0.387  0.788  0.026  1.0
  Rb  Rb7  1  0.887  0.212  0.474  1.0
  Rb  Rb8  1  0.867  0.588  0.594  1.0
  Rb  Rb9  1  0.367  0.412  0.906  1.0
  Rb  Rb10  1  0.133  0.412  0.406  1.0
  Rb  Rb11  1  0.633  0.588  0.094  1.0
  Rb  Rb12  1  0.872  0.016  0.964  1.0
  Rb  Rb13  1  0.372  0.984  0.536  1.0
  Rb  Rb14  1  0.128  0.984  0.036  1.0
  Rb  Rb15  1  0.628  0.016  0.464  1.0
  Ga  Ga16  1  0.941  1.000  0.258  1.0
  Ga  Ga17  1  0.441  0.000  0.242  1.0
  Ga  Ga18  1  0.559  1.000  0.758  1.0
  Ga  Ga19  1  0.785  0.858  0.756  1.0
  Ga  Ga20  1  0.285  0.142  0.744  1.0
  Ga  Ga21  1  0.215  0.142  0.244  1.0
  Ga  Ga22  1  0.715  0.858  0.256  1.0
  Ga  Ga23  1  0.059  0.000  0.742  1.0
  As  As24  1  0.555  0.801  0.258  1.0
  As  As25  1  0.192  0.371  0.714  1.0
  As  As26  1  0.308  0.371  0.214  1.0
  As  As27  1  0.692  0.629  0.786  1.0
  As  As28  1  0.711  0.106  0.729  1.0
  As  As29  1  0.211  0.894  0.771  1.0
  As  As30  1  0.289  0.894  0.271  1.0
  As  As31  1  0.789  0.106  0.229  1.0
  As  As32  1  0.055  0.199  0.242  1.0
  As  As33  1  0.445  0.199  0.742  1.0
  As  As34  1  0.945  0.801  0.758  1.0
  As  As35  1  0.964  0.728  0.279  1.0
  As  As36  1  0.536  0.728  0.779  1.0
  As  As37  1  0.036  0.272  0.721  1.0
  As  As38  1  0.808  0.629  0.286  1.0
  As  As39  1  0.464  0.272  0.221  1.0
[/CIF]
.
The compound described by Rb2GaAs2 crystallizes in the monoclinic P2_1/c space group. There are four inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 4-coordinate geometry to one As(2), one As(3), and two equivalent As(1) atoms. In the second Rb site, Rb(2) is bonded in a 9-coordinate geometry to one Ga(2), two equivalent Ga(1), one As(2), one As(4), two equivalent As(1), and two equivalent As(3) atoms. In the third Rb site, Rb(3) is bonded in a 5-coordinate geometry to one As(1), two equivalent As(2), and two equivalent As(4) atoms. In the fourth Rb site, Rb(4) is bonded in a 10-coordinate geometry to two equivalent Ga(1), two equivalent Ga(2), one As(1), one As(2), two equivalent As(3), and two equivalent As(4) atoms. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a distorted trigonal planar geometry to two equivalent Rb(2), two equivalent Rb(4), one As(1), one As(3), and one As(4) atom. In the second Ga site, Ga(2) is bonded in a distorted trigonal planar geometry to one Rb(2), two equivalent Rb(4), one As(1), one As(2), and one As(3) atom. There are four inequivalent As sites. In the first As site, As(4) is bonded in a 7-coordinate geometry to one Rb(2), two equivalent Rb(3), two equivalent Rb(4), one Ga(1), and one As(2) atom. In the second As site, As(1) is bonded in a 2-coordinate geometry to one Rb(3), one Rb(4), two equivalent Rb(1), two equivalent Rb(2), one Ga(1), and one Ga(2) atom. In the third As site, As(2) is bonded in a 1-coordinate geometry to one Rb(1), one Rb(2), one Rb(4), two equivalent Rb(3), one Ga(2), and one As(4) atom. In the fourth As site, As(3) is bonded in a 7-coordinate geometry to one Rb(1), two equivalent Rb(2), two equivalent Rb(4), one Ga(1), and one Ga(2) atom. is represented by the CIF card [CIF]
data_Rb2GaAs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.740
_cell_length_b   9.100
_cell_length_c   11.758
_cell_angle_alpha   61.723
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1389.051
_cell_formula_units_Z   8
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
  Rb  Rb0  1  0.616  0.493  0.568  1.0
  Rb  Rb1  1  0.116  0.507  0.932  1.0
  Rb  Rb2  1  0.384  0.507  0.432  1.0
  Rb  Rb3  1  0.884  0.493  0.068  1.0
  Rb  Rb4  1  0.613  0.212  0.974  1.0
  Rb  Rb5  1  0.113  0.788  0.526  1.0
  Rb  Rb6  1  0.387  0.788  0.026  1.0
  Rb  Rb7  1  0.887  0.212  0.474  1.0
  Rb  Rb8  1  0.867  0.588  0.594  1.0
  Rb  Rb9  1  0.367  0.412  0.906  1.0
  Rb  Rb10  1  0.133  0.412  0.406  1.0
  Rb  Rb11  1  0.633  0.588  0.094  1.0
  Rb  Rb12  1  0.872  0.016  0.964  1.0
  Rb  Rb13  1  0.372  0.984  0.536  1.0
  Rb  Rb14  1  0.128  0.984  0.036  1.0
  Rb  Rb15  1  0.628  0.016  0.464  1.0
  Ga  Ga16  1  0.941  1.000  0.258  1.0
  Ga  Ga17  1  0.441  0.000  0.242  1.0
  Ga  Ga18  1  0.559  1.000  0.758  1.0
  Ga  Ga19  1  0.785  0.858  0.756  1.0
  Ga  Ga20  1  0.285  0.142  0.744  1.0
  Ga  Ga21  1  0.215  0.142  0.244  1.0
  Ga  Ga22  1  0.715  0.858  0.256  1.0
  Ga  Ga23  1  0.059  0.000  0.742  1.0
  As  As24  1  0.555  0.801  0.258  1.0
  As  As25  1  0.192  0.371  0.714  1.0
  As  As26  1  0.308  0.371  0.214  1.0
  As  As27  1  0.692  0.629  0.786  1.0
  As  As28  1  0.711  0.106  0.729  1.0
  As  As29  1  0.211  0.894  0.771  1.0
  As  As30  1  0.289  0.894  0.271  1.0
  As  As31  1  0.789  0.106  0.229  1.0
  As  As32  1  0.055  0.199  0.242  1.0
  As  As33  1  0.445  0.199  0.742  1.0
  As  As34  1  0.945  0.801  0.758  1.0
  As  As35  1  0.964  0.728  0.279  1.0
  As  As36  1  0.536  0.728  0.779  1.0
  As  As37  1  0.036  0.272  0.721  1.0
  As  As38  1  0.808  0.629  0.286  1.0
  As  As39  1  0.464  0.272  0.221  1.0
[/CIF]
.