The crystal structure described by Rb2ZnH4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 9-coordinate geometry to one H(2), two equivalent H(3), and six equivalent H(1) atoms. In the second Rb site, Rb(2) is bonded in a 9-coordinate geometry to two equivalent H(3), three equivalent H(2), and four equivalent H(1) atoms. Zn(1) is bonded in a tetrahedral 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 single-bond geometry to two equivalent Rb(2), three equivalent Rb(1), and one Zn(1) atom. In the second H site, H(2) is bonded in a distorted single-bond geometry to one Rb(1), three equivalent Rb(2), and one Zn(1) atom. In the third H site, H(3) is bonded in a distorted single-bond geometry to two equivalent Rb(1), two equivalent Rb(2), and one Zn(1) atom. is represented by the CIF file [CIF]
data_Rb2ZnH4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.009
_cell_length_b   8.134
_cell_length_c   10.574
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   516.855
_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
  Rb  Rb0  1  0.250  0.660  0.094  1.0
  Rb  Rb1  1  0.250  0.160  0.406  1.0
  Rb  Rb2  1  0.750  0.340  0.906  1.0
  Rb  Rb3  1  0.750  0.840  0.594  1.0
  Rb  Rb4  1  0.250  0.984  0.814  1.0
  Rb  Rb5  1  0.250  0.484  0.686  1.0
  Rb  Rb6  1  0.750  0.016  0.186  1.0
  Rb  Rb7  1  0.750  0.516  0.314  1.0
  Zn  Zn8  1  0.250  0.740  0.417  1.0
  Zn  Zn9  1  0.250  0.240  0.083  1.0
  Zn  Zn10  1  0.750  0.260  0.583  1.0
  Zn  Zn11  1  0.750  0.760  0.917  1.0
  H  H12  1  0.026  0.814  0.347  1.0
  H  H13  1  0.474  0.314  0.153  1.0
  H  H14  1  0.526  0.186  0.653  1.0
  H  H15  1  0.974  0.686  0.847  1.0
  H  H16  1  0.974  0.186  0.653  1.0
  H  H17  1  0.526  0.686  0.847  1.0
  H  H18  1  0.474  0.814  0.347  1.0
  H  H19  1  0.026  0.314  0.153  1.0
  H  H20  1  0.250  0.539  0.408  1.0
  H  H21  1  0.250  0.039  0.092  1.0
  H  H22  1  0.750  0.461  0.592  1.0
  H  H23  1  0.750  0.961  0.908  1.0
  H  H24  1  0.250  0.306  0.935  1.0
  H  H25  1  0.250  0.806  0.565  1.0
  H  H26  1  0.750  0.694  0.065  1.0
  H  H27  1  0.750  0.194  0.435  1.0
[/CIF]
.
The crystal structure described by Rb2ZnH4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 9-coordinate geometry to one H(2), two equivalent H(3), and six equivalent H(1) atoms. In the second Rb site, Rb(2) is bonded in a 9-coordinate geometry to two equivalent H(3), three equivalent H(2), and four equivalent H(1) atoms. Zn(1) is bonded in a tetrahedral 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 single-bond geometry to two equivalent Rb(2), three equivalent Rb(1), and one Zn(1) atom. In the second H site, H(2) is bonded in a distorted single-bond geometry to one Rb(1), three equivalent Rb(2), and one Zn(1) atom. In the third H site, H(3) is bonded in a distorted single-bond geometry to two equivalent Rb(1), two equivalent Rb(2), and one Zn(1) atom. is represented by the CIF file [CIF]
data_Rb2ZnH4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.009
_cell_length_b   8.134
_cell_length_c   10.574
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   516.855
_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
  Rb  Rb0  1  0.250  0.660  0.094  1.0
  Rb  Rb1  1  0.250  0.160  0.406  1.0
  Rb  Rb2  1  0.750  0.340  0.906  1.0
  Rb  Rb3  1  0.750  0.840  0.594  1.0
  Rb  Rb4  1  0.250  0.984  0.814  1.0
  Rb  Rb5  1  0.250  0.484  0.686  1.0
  Rb  Rb6  1  0.750  0.016  0.186  1.0
  Rb  Rb7  1  0.750  0.516  0.314  1.0
  Zn  Zn8  1  0.250  0.740  0.417  1.0
  Zn  Zn9  1  0.250  0.240  0.083  1.0
  Zn  Zn10  1  0.750  0.260  0.583  1.0
  Zn  Zn11  1  0.750  0.760  0.917  1.0
  H  H12  1  0.026  0.814  0.347  1.0
  H  H13  1  0.474  0.314  0.153  1.0
  H  H14  1  0.526  0.186  0.653  1.0
  H  H15  1  0.974  0.686  0.847  1.0
  H  H16  1  0.974  0.186  0.653  1.0
  H  H17  1  0.526  0.686  0.847  1.0
  H  H18  1  0.474  0.814  0.347  1.0
  H  H19  1  0.026  0.314  0.153  1.0
  H  H20  1  0.250  0.539  0.408  1.0
  H  H21  1  0.250  0.039  0.092  1.0
  H  H22  1  0.750  0.461  0.592  1.0
  H  H23  1  0.750  0.961  0.908  1.0
  H  H24  1  0.250  0.306  0.935  1.0
  H  H25  1  0.250  0.806  0.565  1.0
  H  H26  1  0.750  0.694  0.065  1.0
  H  H27  1  0.750  0.194  0.435  1.0
[/CIF]
.