The compound described by Os2C3 crystallizes in the orthorhombic Pbcn space group. There are three inequivalent Os sites. In the first Os site, Os(1) is bonded in a 7-coordinate geometry to two equivalent C(1), two equivalent C(2), and three equivalent C(3) atoms. In the second Os site, Os(2) is bonded to two equivalent C(1) and four equivalent C(2) atoms to form distorted edge-sharing OsC6 octahedra. In the third Os site, Os(3) is bonded in a 6-coordinate geometry to two equivalent C(3) and four equivalent C(1) atoms. There are three inequivalent C sites. In the first C site, C(3) is bonded in a 4-coordinate geometry to one Os(3) and three equivalent Os(1) atoms. In the second C site, C(1) is bonded in a distorted pentagonal planar geometry to one Os(2), two equivalent Os(1), and two equivalent Os(3) atoms. In the third C site, C(2) is bonded in a 4-coordinate geometry to two equivalent Os(1) and two equivalent Os(2) atoms. is represented by the CIF file [CIF]
data_Os2C3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.121
_cell_length_b   7.625
_cell_length_c   10.080
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   393.621
_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
  Os  Os0  1  0.749  0.314  0.766  1.0
  Os  Os1  1  0.249  0.186  0.734  1.0
  Os  Os2  1  0.251  0.186  0.267  1.0
  Os  Os3  1  0.751  0.314  0.234  1.0
  Os  Os4  1  0.251  0.686  0.234  1.0
  Os  Os5  1  0.751  0.814  0.267  1.0
  Os  Os6  1  0.749  0.814  0.734  1.0
  Os  Os7  1  0.249  0.686  0.766  1.0
  Os  Os8  1  0.750  0.425  0.500  1.0
  Os  Os9  1  0.250  0.075  0.000  1.0
  Os  Os10  1  0.250  0.575  0.500  1.0
  Os  Os11  1  0.750  0.925  0.000  1.0
  Os  Os12  1  0.250  0.017  0.500  1.0
  Os  Os13  1  0.750  0.483  0.000  1.0
  Os  Os14  1  0.750  0.983  0.500  1.0
  Os  Os15  1  0.250  0.517  0.000  1.0
  C  C16  1  0.540  0.201  0.575  1.0
  C  C17  1  0.040  0.299  0.925  1.0
  C  C18  1  0.460  0.299  0.075  1.0
  C  C19  1  0.960  0.201  0.425  1.0
  C  C20  1  0.460  0.799  0.425  1.0
  C  C21  1  0.960  0.701  0.075  1.0
  C  C22  1  0.540  0.701  0.925  1.0
  C  C23  1  0.040  0.799  0.575  1.0
  C  C24  1  0.915  0.119  0.118  1.0
  C  C25  1  0.415  0.381  0.382  1.0
  C  C26  1  0.085  0.381  0.618  1.0
  C  C27  1  0.585  0.119  0.882  1.0
  C  C28  1  0.085  0.881  0.882  1.0
  C  C29  1  0.585  0.619  0.618  1.0
  C  C30  1  0.915  0.619  0.382  1.0
  C  C31  1  0.415  0.881  0.118  1.0
  C  C32  1  0.613  0.571  0.188  1.0
  C  C33  1  0.113  0.929  0.312  1.0
  C  C34  1  0.387  0.929  0.688  1.0
  C  C35  1  0.887  0.571  0.812  1.0
  C  C36  1  0.387  0.429  0.812  1.0
  C  C37  1  0.887  0.071  0.688  1.0
  C  C38  1  0.613  0.071  0.312  1.0
  C  C39  1  0.113  0.429  0.188  1.0
[/CIF]
.
The compound described by Os2C3 crystallizes in the orthorhombic Pbcn space group. There are three inequivalent Os sites. In the first Os site, Os(1) is bonded in a 7-coordinate geometry to two equivalent C(1), two equivalent C(2), and three equivalent C(3) atoms. In the second Os site, Os(2) is bonded to two equivalent C(1) and four equivalent C(2) atoms to form distorted edge-sharing OsC6 octahedra. In the third Os site, Os(3) is bonded in a 6-coordinate geometry to two equivalent C(3) and four equivalent C(1) atoms. There are three inequivalent C sites. In the first C site, C(3) is bonded in a 4-coordinate geometry to one Os(3) and three equivalent Os(1) atoms. In the second C site, C(1) is bonded in a distorted pentagonal planar geometry to one Os(2), two equivalent Os(1), and two equivalent Os(3) atoms. In the third C site, C(2) is bonded in a 4-coordinate geometry to two equivalent Os(1) and two equivalent Os(2) atoms. is represented by the CIF file [CIF]
data_Os2C3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.121
_cell_length_b   7.625
_cell_length_c   10.080
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   393.621
_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
  Os  Os0  1  0.749  0.314  0.766  1.0
  Os  Os1  1  0.249  0.186  0.734  1.0
  Os  Os2  1  0.251  0.186  0.267  1.0
  Os  Os3  1  0.751  0.314  0.234  1.0
  Os  Os4  1  0.251  0.686  0.234  1.0
  Os  Os5  1  0.751  0.814  0.267  1.0
  Os  Os6  1  0.749  0.814  0.734  1.0
  Os  Os7  1  0.249  0.686  0.766  1.0
  Os  Os8  1  0.750  0.425  0.500  1.0
  Os  Os9  1  0.250  0.075  0.000  1.0
  Os  Os10  1  0.250  0.575  0.500  1.0
  Os  Os11  1  0.750  0.925  0.000  1.0
  Os  Os12  1  0.250  0.017  0.500  1.0
  Os  Os13  1  0.750  0.483  0.000  1.0
  Os  Os14  1  0.750  0.983  0.500  1.0
  Os  Os15  1  0.250  0.517  0.000  1.0
  C  C16  1  0.540  0.201  0.575  1.0
  C  C17  1  0.040  0.299  0.925  1.0
  C  C18  1  0.460  0.299  0.075  1.0
  C  C19  1  0.960  0.201  0.425  1.0
  C  C20  1  0.460  0.799  0.425  1.0
  C  C21  1  0.960  0.701  0.075  1.0
  C  C22  1  0.540  0.701  0.925  1.0
  C  C23  1  0.040  0.799  0.575  1.0
  C  C24  1  0.915  0.119  0.118  1.0
  C  C25  1  0.415  0.381  0.382  1.0
  C  C26  1  0.085  0.381  0.618  1.0
  C  C27  1  0.585  0.119  0.882  1.0
  C  C28  1  0.085  0.881  0.882  1.0
  C  C29  1  0.585  0.619  0.618  1.0
  C  C30  1  0.915  0.619  0.382  1.0
  C  C31  1  0.415  0.881  0.118  1.0
  C  C32  1  0.613  0.571  0.188  1.0
  C  C33  1  0.113  0.929  0.312  1.0
  C  C34  1  0.387  0.929  0.688  1.0
  C  C35  1  0.887  0.571  0.812  1.0
  C  C36  1  0.387  0.429  0.812  1.0
  C  C37  1  0.887  0.071  0.688  1.0
  C  C38  1  0.613  0.071  0.312  1.0
  C  C39  1  0.113  0.429  0.188  1.0
[/CIF]
.