The compound described by Mn(BH4)2 crystallizes in the tetragonal I4_1/acd space group. The structure consists of a Mn(BH4)2 framework. Mn(1) is bonded to four equivalent H(1) and four equivalent H(2) atoms to form distorted MnH8 hexagonal bipyramids that share edges with four equivalent B(1)H4 tetrahedra. B(1) is bonded to two equivalent H(1) and two equivalent H(2) atoms to form BH4 tetrahedra that share edges with two equivalent Mn(1)H8 hexagonal bipyramids. There are two inequivalent H sites. In the first H site, H(2) is bonded in a distorted L-shaped geometry to one Mn(1) and one B(1) atom. In the second H site, H(1) is bonded in a distorted L-shaped geometry to one Mn(1) and one B(1) atom. is represented by the CIF card [CIF]
data_Mn(BH4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.218
_cell_length_b   8.218
_cell_length_c   8.218
_cell_angle_alpha   124.969
_cell_angle_beta   124.969
_cell_angle_gamma   81.589
_symmetry_Int_Tables_number   1
_cell_volume   358.720
_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
  Mn  Mn0  1  0.250  0.250  0.000  1.0
  Mn  Mn1  1  0.750  0.750  0.000  1.0
  Mn  Mn2  1  0.500  0.000  0.500  1.0
  Mn  Mn3  1  0.000  0.500  0.500  1.0
  B  B4  1  0.147  0.875  0.772  1.0
  B  B5  1  0.647  0.875  0.272  1.0
  B  B6  1  0.125  0.897  0.272  1.0
  B  B7  1  0.625  0.353  0.228  1.0
  B  B8  1  0.603  0.375  0.728  1.0
  B  B9  1  0.103  0.375  0.228  1.0
  B  B10  1  0.125  0.397  0.772  1.0
  B  B11  1  0.625  0.853  0.728  1.0
  H  H12  1  0.133  0.948  0.670  1.0
  H  H13  1  0.633  0.963  0.185  1.0
  H  H14  1  0.198  0.883  0.170  1.0
  H  H15  1  0.698  0.528  0.315  1.0
  H  H16  1  0.617  0.302  0.830  1.0
  H  H17  1  0.117  0.287  0.315  1.0
  H  H18  1  0.552  0.367  0.330  1.0
  H  H19  1  0.052  0.722  0.185  1.0
  H  H20  1  0.778  0.448  0.815  1.0
  H  H21  1  0.278  0.463  0.330  1.0
  H  H22  1  0.213  0.383  0.685  1.0
  H  H23  1  0.713  0.028  0.830  1.0
  H  H24  1  0.972  0.802  0.685  1.0
  H  H25  1  0.472  0.787  0.170  1.0
  H  H26  1  0.537  0.867  0.815  1.0
  H  H27  1  0.037  0.222  0.670  1.0
  H  H28  1  0.248  0.748  0.742  1.0
  H  H29  1  0.748  0.006  0.500  1.0
  H  H30  1  0.998  0.998  0.242  1.0
  H  H31  1  0.498  0.257  0.000  1.0
  H  H32  1  0.502  0.502  0.758  1.0
  H  H33  1  0.002  0.244  0.000  1.0
  H  H34  1  0.752  0.252  0.258  1.0
  H  H35  1  0.252  0.993  0.500  1.0
  H  H36  1  0.507  0.248  0.500  1.0
  H  H37  1  0.007  0.506  0.258  1.0
  H  H38  1  0.256  0.498  1.000  1.0
  H  H39  1  0.756  0.757  0.758  1.0
  H  H40  1  0.243  0.002  1.000  1.0
  H  H41  1  0.743  0.744  0.242  1.0
  H  H42  1  0.494  0.752  0.500  1.0
  H  H43  1  0.994  0.493  0.742  1.0
[/CIF]
.
The compound described by Mn(BH4)2 crystallizes in the tetragonal I4_1/acd space group. The structure consists of a Mn(BH4)2 framework. Mn(1) is bonded to four equivalent H(1) and four equivalent H(2) atoms to form distorted MnH8 hexagonal bipyramids that share edges with four equivalent B(1)H4 tetrahedra. B(1) is bonded to two equivalent H(1) and two equivalent H(2) atoms to form BH4 tetrahedra that share edges with two equivalent Mn(1)H8 hexagonal bipyramids. There are two inequivalent H sites. In the first H site, H(2) is bonded in a distorted L-shaped geometry to one Mn(1) and one B(1) atom. In the second H site, H(1) is bonded in a distorted L-shaped geometry to one Mn(1) and one B(1) atom. is represented by the CIF card [CIF]
data_Mn(BH4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.218
_cell_length_b   8.218
_cell_length_c   8.218
_cell_angle_alpha   124.969
_cell_angle_beta   124.969
_cell_angle_gamma   81.589
_symmetry_Int_Tables_number   1
_cell_volume   358.720
_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
  Mn  Mn0  1  0.250  0.250  0.000  1.0
  Mn  Mn1  1  0.750  0.750  0.000  1.0
  Mn  Mn2  1  0.500  0.000  0.500  1.0
  Mn  Mn3  1  0.000  0.500  0.500  1.0
  B  B4  1  0.147  0.875  0.772  1.0
  B  B5  1  0.647  0.875  0.272  1.0
  B  B6  1  0.125  0.897  0.272  1.0
  B  B7  1  0.625  0.353  0.228  1.0
  B  B8  1  0.603  0.375  0.728  1.0
  B  B9  1  0.103  0.375  0.228  1.0
  B  B10  1  0.125  0.397  0.772  1.0
  B  B11  1  0.625  0.853  0.728  1.0
  H  H12  1  0.133  0.948  0.670  1.0
  H  H13  1  0.633  0.963  0.185  1.0
  H  H14  1  0.198  0.883  0.170  1.0
  H  H15  1  0.698  0.528  0.315  1.0
  H  H16  1  0.617  0.302  0.830  1.0
  H  H17  1  0.117  0.287  0.315  1.0
  H  H18  1  0.552  0.367  0.330  1.0
  H  H19  1  0.052  0.722  0.185  1.0
  H  H20  1  0.778  0.448  0.815  1.0
  H  H21  1  0.278  0.463  0.330  1.0
  H  H22  1  0.213  0.383  0.685  1.0
  H  H23  1  0.713  0.028  0.830  1.0
  H  H24  1  0.972  0.802  0.685  1.0
  H  H25  1  0.472  0.787  0.170  1.0
  H  H26  1  0.537  0.867  0.815  1.0
  H  H27  1  0.037  0.222  0.670  1.0
  H  H28  1  0.248  0.748  0.742  1.0
  H  H29  1  0.748  0.006  0.500  1.0
  H  H30  1  0.998  0.998  0.242  1.0
  H  H31  1  0.498  0.257  0.000  1.0
  H  H32  1  0.502  0.502  0.758  1.0
  H  H33  1  0.002  0.244  0.000  1.0
  H  H34  1  0.752  0.252  0.258  1.0
  H  H35  1  0.252  0.993  0.500  1.0
  H  H36  1  0.507  0.248  0.500  1.0
  H  H37  1  0.007  0.506  0.258  1.0
  H  H38  1  0.256  0.498  1.000  1.0
  H  H39  1  0.756  0.757  0.758  1.0
  H  H40  1  0.243  0.002  1.000  1.0
  H  H41  1  0.743  0.744  0.242  1.0
  H  H42  1  0.494  0.752  0.500  1.0
  H  H43  1  0.994  0.493  0.742  1.0
[/CIF]
.