The compound described by Ca2Ni10H crystallizes in the orthorhombic Amm2 space group. Ca(1) is bonded in a distorted single-bond geometry to two equivalent Ni(3), two equivalent Ni(5), three equivalent Ni(1), three equivalent Ni(2), four equivalent Ni(6), and one H(1) atom. There are six inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 12-coordinate geometry to three equivalent Ca(1), one Ni(3), one Ni(5), two equivalent Ni(4), two equivalent Ni(6), and three equivalent Ni(2) atoms. In the second Ni site, Ni(2) is bonded in a 9-coordinate geometry to three equivalent Ca(1), one Ni(3), one Ni(5), two equivalent Ni(4), two equivalent Ni(6), and three equivalent Ni(1) atoms. In the third Ni site, Ni(3) is bonded to four equivalent Ca(1), two equivalent Ni(1), two equivalent Ni(2), and four equivalent Ni(4) atoms to form distorted NiCa4Ni8 cuboctahedra that share corners with four equivalent Ni(3)Ca4Ni8 cuboctahedra, corners with four equivalent Ni(5)Ca4Ni8 cuboctahedra, corners with eight equivalent Ni(6)Ca4Ni8 cuboctahedra, edges with two equivalent Ni(3)Ca4Ni8 cuboctahedra, edges with eight equivalent Ni(6)Ca4Ni8 cuboctahedra,  an edgeedge with one H(1)Ca2Ni2 tetrahedra, faces with two equivalent Ni(5)Ca4Ni8 cuboctahedra, and faces with two equivalent H(1)Ca2Ni2 tetrahedra. In the fourth Ni site, Ni(4) is bonded in a single-bond geometry to two equivalent Ni(1), two equivalent Ni(2), two equivalent Ni(3), and one H(1) atom. In the fifth Ni site, Ni(5) is bonded to four equivalent Ca(1), two equivalent Ni(1), two equivalent Ni(2), and four equivalent Ni(6) atoms to form NiCa4Ni8 cuboctahedra that share corners with four equivalent Ni(3)Ca4Ni8 cuboctahedra, corners with four equivalent Ni(5)Ca4Ni8 cuboctahedra, corners with four equivalent H(1)Ca2Ni2 tetrahedra, edges with two equivalent Ni(5)Ca4Ni8 cuboctahedra, faces with two equivalent Ni(3)Ca4Ni8 cuboctahedra, and faces with eight equivalent Ni(6)Ca4Ni8 cuboctahedra. In the sixth Ni site, Ni(6) is bonded to four equivalent Ca(1), two equivalent Ni(1), two equivalent Ni(2), two equivalent Ni(5), and two equivalent Ni(6) atoms to form NiCa4Ni8 cuboctahedra that share corners with four equivalent Ni(3)Ca4Ni8 cuboctahedra, corners with four equivalent Ni(6)Ca4Ni8 cuboctahedra, corners with four equivalent H(1)Ca2Ni2 tetrahedra, edges with two equivalent Ni(6)Ca4Ni8 cuboctahedra, edges with four equivalent Ni(3)Ca4Ni8 cuboctahedra, faces with four equivalent Ni(5)Ca4Ni8 cuboctahedra, and faces with four equivalent Ni(6)Ca4Ni8 cuboctahedra. H(1) is bonded to two equivalent Ca(1) and two equivalent Ni(4) atoms to form HCa2Ni2 tetrahedra that share corners with four equivalent Ni(5)Ca4Ni8 cuboctahedra, corners with eight equivalent Ni(6)Ca4Ni8 cuboctahedra,  an edgeedge with one Ni(3)Ca4Ni8 cuboctahedra, and faces with two equivalent Ni(3)Ca4Ni8 cuboctahedra. is represented by the CIF file [CIF]
data_Ca2Ni10H
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.930
_cell_length_b   4.949
_cell_length_c   7.871
_cell_angle_alpha   90.003
_cell_angle_beta   89.988
_cell_angle_gamma   120.062
_symmetry_Int_Tables_number   1
_cell_volume   166.190
_cell_formula_units_Z   1
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
  Ca  Ca0  1  0.002  0.001  0.009  1.0
  Ca  Ca1  1  0.001  0.001  0.491  1.0
  Ni  Ni2  1  0.329  0.664  0.001  1.0
  Ni  Ni3  1  0.669  0.335  0.001  1.0
  Ni  Ni4  1  0.004  0.502  0.749  1.0
  Ni  Ni5  1  0.501  0.005  0.749  1.0
  Ni  Ni6  1  0.500  0.495  0.750  1.0
  Ni  Ni7  1  0.329  0.664  0.498  1.0
  Ni  Ni8  1  0.669  0.335  0.498  1.0
  Ni  Ni9  1  0.001  0.500  0.249  1.0
  Ni  Ni10  1  0.501  0.000  0.249  1.0
  Ni  Ni11  1  0.501  0.501  0.249  1.0
  H  H12  1  0.721  0.860  0.750  1.0
[/CIF]
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The compound described by Ca2Ni10H crystallizes in the orthorhombic Amm2 space group. Ca(1) is bonded in a distorted single-bond geometry to two equivalent Ni(3), two equivalent Ni(5), three equivalent Ni(1), three equivalent Ni(2), four equivalent Ni(6), and one H(1) atom. There are six inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 12-coordinate geometry to three equivalent Ca(1), one Ni(3), one Ni(5), two equivalent Ni(4), two equivalent Ni(6), and three equivalent Ni(2) atoms. In the second Ni site, Ni(2) is bonded in a 9-coordinate geometry to three equivalent Ca(1), one Ni(3), one Ni(5), two equivalent Ni(4), two equivalent Ni(6), and three equivalent Ni(1) atoms. In the third Ni site, Ni(3) is bonded to four equivalent Ca(1), two equivalent Ni(1), two equivalent Ni(2), and four equivalent Ni(4) atoms to form distorted NiCa4Ni8 cuboctahedra that share corners with four equivalent Ni(3)Ca4Ni8 cuboctahedra, corners with four equivalent Ni(5)Ca4Ni8 cuboctahedra, corners with eight equivalent Ni(6)Ca4Ni8 cuboctahedra, edges with two equivalent Ni(3)Ca4Ni8 cuboctahedra, edges with eight equivalent Ni(6)Ca4Ni8 cuboctahedra,  an edgeedge with one H(1)Ca2Ni2 tetrahedra, faces with two equivalent Ni(5)Ca4Ni8 cuboctahedra, and faces with two equivalent H(1)Ca2Ni2 tetrahedra. In the fourth Ni site, Ni(4) is bonded in a single-bond geometry to two equivalent Ni(1), two equivalent Ni(2), two equivalent Ni(3), and one H(1) atom. In the fifth Ni site, Ni(5) is bonded to four equivalent Ca(1), two equivalent Ni(1), two equivalent Ni(2), and four equivalent Ni(6) atoms to form NiCa4Ni8 cuboctahedra that share corners with four equivalent Ni(3)Ca4Ni8 cuboctahedra, corners with four equivalent Ni(5)Ca4Ni8 cuboctahedra, corners with four equivalent H(1)Ca2Ni2 tetrahedra, edges with two equivalent Ni(5)Ca4Ni8 cuboctahedra, faces with two equivalent Ni(3)Ca4Ni8 cuboctahedra, and faces with eight equivalent Ni(6)Ca4Ni8 cuboctahedra. In the sixth Ni site, Ni(6) is bonded to four equivalent Ca(1), two equivalent Ni(1), two equivalent Ni(2), two equivalent Ni(5), and two equivalent Ni(6) atoms to form NiCa4Ni8 cuboctahedra that share corners with four equivalent Ni(3)Ca4Ni8 cuboctahedra, corners with four equivalent Ni(6)Ca4Ni8 cuboctahedra, corners with four equivalent H(1)Ca2Ni2 tetrahedra, edges with two equivalent Ni(6)Ca4Ni8 cuboctahedra, edges with four equivalent Ni(3)Ca4Ni8 cuboctahedra, faces with four equivalent Ni(5)Ca4Ni8 cuboctahedra, and faces with four equivalent Ni(6)Ca4Ni8 cuboctahedra. H(1) is bonded to two equivalent Ca(1) and two equivalent Ni(4) atoms to form HCa2Ni2 tetrahedra that share corners with four equivalent Ni(5)Ca4Ni8 cuboctahedra, corners with eight equivalent Ni(6)Ca4Ni8 cuboctahedra,  an edgeedge with one Ni(3)Ca4Ni8 cuboctahedra, and faces with two equivalent Ni(3)Ca4Ni8 cuboctahedra. is represented by the CIF file [CIF]
data_Ca2Ni10H
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.930
_cell_length_b   4.949
_cell_length_c   7.871
_cell_angle_alpha   90.003
_cell_angle_beta   89.988
_cell_angle_gamma   120.062
_symmetry_Int_Tables_number   1
_cell_volume   166.190
_cell_formula_units_Z   1
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
  Ca  Ca0  1  0.002  0.001  0.009  1.0
  Ca  Ca1  1  0.001  0.001  0.491  1.0
  Ni  Ni2  1  0.329  0.664  0.001  1.0
  Ni  Ni3  1  0.669  0.335  0.001  1.0
  Ni  Ni4  1  0.004  0.502  0.749  1.0
  Ni  Ni5  1  0.501  0.005  0.749  1.0
  Ni  Ni6  1  0.500  0.495  0.750  1.0
  Ni  Ni7  1  0.329  0.664  0.498  1.0
  Ni  Ni8  1  0.669  0.335  0.498  1.0
  Ni  Ni9  1  0.001  0.500  0.249  1.0
  Ni  Ni10  1  0.501  0.000  0.249  1.0
  Ni  Ni11  1  0.501  0.501  0.249  1.0
  H  H12  1  0.721  0.860  0.750  1.0
[/CIF]
.