The compound described by Mn(BH4)2 crystallizes in the orthorhombic Fddd space group. The structure consists of a Mn(BH4)2 framework. Mn(1) is bonded in a 8-coordinate geometry to two equivalent H(1), two equivalent H(2), two equivalent H(3), and two equivalent H(4) atoms. B(1) is bonded in a tetrahedral geometry to one H(1), one H(2), one H(3), and one H(4) atom. There are four inequivalent H sites. In the first H site, H(3) is bonded in a distorted L-shaped geometry to one Mn(1) and one B(1) atom. In the second H site, H(4) is bonded in a distorted L-shaped geometry to one Mn(1) and one B(1) atom. In the third H site, H(1) is bonded in a distorted L-shaped geometry to one Mn(1) and one B(1) atom. In the fourth H site, H(2) is bonded in a distorted single-bond geometry to one Mn(1) and one B(1) atom. is represented by the CIF file [CIF]
data_Mn(BH4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.362
_cell_length_b   8.300
_cell_length_c   7.036
_cell_angle_alpha   65.485
_cell_angle_beta   64.562
_cell_angle_gamma   49.953
_symmetry_Int_Tables_number   1
_cell_volume   330.716
_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  0.720  0.720  0.280  1.0
  Mn  Mn1  1  0.280  0.280  0.720  1.0
  Mn  Mn2  1  0.530  0.530  0.970  1.0
  Mn  Mn3  1  0.970  0.970  0.530  1.0
  B  B4  1  0.865  0.335  0.329  1.0
  B  B5  1  0.335  0.865  0.471  1.0
  B  B6  1  0.471  0.329  0.335  1.0
  B  B7  1  0.329  0.471  0.865  1.0
  B  B8  1  0.385  0.915  0.921  1.0
  B  B9  1  0.915  0.385  0.779  1.0
  B  B10  1  0.779  0.921  0.915  1.0
  B  B11  1  0.921  0.779  0.385  1.0
  H  H12  1  0.950  0.189  0.239  1.0
  H  H13  1  0.189  0.950  0.622  1.0
  H  H14  1  0.622  0.239  0.189  1.0
  H  H15  1  0.239  0.622  0.950  1.0
  H  H16  1  0.300  0.061  0.011  1.0
  H  H17  1  0.061  0.300  0.628  1.0
  H  H18  1  0.628  0.011  0.061  1.0
  H  H19  1  0.011  0.628  0.300  1.0
  H  H20  1  0.279  0.347  0.994  1.0
  H  H21  1  0.347  0.279  0.379  1.0
  H  H22  1  0.379  0.994  0.347  1.0
  H  H23  1  0.994  0.379  0.279  1.0
  H  H24  1  0.971  0.903  0.256  1.0
  H  H25  1  0.903  0.971  0.871  1.0
  H  H26  1  0.871  0.256  0.903  1.0
  H  H27  1  0.256  0.871  0.971  1.0
  H  H28  1  0.527  0.375  0.812  1.0
  H  H29  1  0.375  0.527  0.286  1.0
  H  H30  1  0.286  0.812  0.375  1.0
  H  H31  1  0.812  0.286  0.527  1.0
  H  H32  1  0.723  0.875  0.438  1.0
  H  H33  1  0.875  0.723  0.964  1.0
  H  H34  1  0.964  0.438  0.875  1.0
  H  H35  1  0.438  0.964  0.723  1.0
  H  H36  1  0.699  0.485  0.264  1.0
  H  H37  1  0.485  0.699  0.552  1.0
  H  H38  1  0.552  0.264  0.485  1.0
  H  H39  1  0.264  0.552  0.699  1.0
  H  H40  1  0.551  0.765  0.986  1.0
  H  H41  1  0.765  0.551  0.698  1.0
  H  H42  1  0.698  0.986  0.765  1.0
  H  H43  1  0.986  0.698  0.551  1.0
[/CIF]
.
The compound described by Mn(BH4)2 crystallizes in the orthorhombic Fddd space group. The structure consists of a Mn(BH4)2 framework. Mn(1) is bonded in a 8-coordinate geometry to two equivalent H(1), two equivalent H(2), two equivalent H(3), and two equivalent H(4) atoms. B(1) is bonded in a tetrahedral geometry to one H(1), one H(2), one H(3), and one H(4) atom. There are four inequivalent H sites. In the first H site, H(3) is bonded in a distorted L-shaped geometry to one Mn(1) and one B(1) atom. In the second H site, H(4) is bonded in a distorted L-shaped geometry to one Mn(1) and one B(1) atom. In the third H site, H(1) is bonded in a distorted L-shaped geometry to one Mn(1) and one B(1) atom. In the fourth H site, H(2) is bonded in a distorted single-bond geometry to one Mn(1) and one B(1) atom. is represented by the CIF file [CIF]
data_Mn(BH4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.362
_cell_length_b   8.300
_cell_length_c   7.036
_cell_angle_alpha   65.485
_cell_angle_beta   64.562
_cell_angle_gamma   49.953
_symmetry_Int_Tables_number   1
_cell_volume   330.716
_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  0.720  0.720  0.280  1.0
  Mn  Mn1  1  0.280  0.280  0.720  1.0
  Mn  Mn2  1  0.530  0.530  0.970  1.0
  Mn  Mn3  1  0.970  0.970  0.530  1.0
  B  B4  1  0.865  0.335  0.329  1.0
  B  B5  1  0.335  0.865  0.471  1.0
  B  B6  1  0.471  0.329  0.335  1.0
  B  B7  1  0.329  0.471  0.865  1.0
  B  B8  1  0.385  0.915  0.921  1.0
  B  B9  1  0.915  0.385  0.779  1.0
  B  B10  1  0.779  0.921  0.915  1.0
  B  B11  1  0.921  0.779  0.385  1.0
  H  H12  1  0.950  0.189  0.239  1.0
  H  H13  1  0.189  0.950  0.622  1.0
  H  H14  1  0.622  0.239  0.189  1.0
  H  H15  1  0.239  0.622  0.950  1.0
  H  H16  1  0.300  0.061  0.011  1.0
  H  H17  1  0.061  0.300  0.628  1.0
  H  H18  1  0.628  0.011  0.061  1.0
  H  H19  1  0.011  0.628  0.300  1.0
  H  H20  1  0.279  0.347  0.994  1.0
  H  H21  1  0.347  0.279  0.379  1.0
  H  H22  1  0.379  0.994  0.347  1.0
  H  H23  1  0.994  0.379  0.279  1.0
  H  H24  1  0.971  0.903  0.256  1.0
  H  H25  1  0.903  0.971  0.871  1.0
  H  H26  1  0.871  0.256  0.903  1.0
  H  H27  1  0.256  0.871  0.971  1.0
  H  H28  1  0.527  0.375  0.812  1.0
  H  H29  1  0.375  0.527  0.286  1.0
  H  H30  1  0.286  0.812  0.375  1.0
  H  H31  1  0.812  0.286  0.527  1.0
  H  H32  1  0.723  0.875  0.438  1.0
  H  H33  1  0.875  0.723  0.964  1.0
  H  H34  1  0.964  0.438  0.875  1.0
  H  H35  1  0.438  0.964  0.723  1.0
  H  H36  1  0.699  0.485  0.264  1.0
  H  H37  1  0.485  0.699  0.552  1.0
  H  H38  1  0.552  0.264  0.485  1.0
  H  H39  1  0.264  0.552  0.699  1.0
  H  H40  1  0.551  0.765  0.986  1.0
  H  H41  1  0.765  0.551  0.698  1.0
  H  H42  1  0.698  0.986  0.765  1.0
  H  H43  1  0.986  0.698  0.551  1.0
[/CIF]
.