The crystal structure described by SeCH3 is Indium-like structured and crystallizes in the orthorhombic Fdd2 space group. The structure is zero-dimensional and consists of sixteen dimethyl diselenide molecules. There are two inequivalent C sites. In the first C site, C(1) is bonded in a trigonal non-coplanar geometry to one H(1), one H(2), one H(3), and one Se(1) atom. In the second C site, C(2) is bonded in a trigonal non-coplanar geometry to one H(4), one H(5), one H(6), and one Se(2) atom. There are six inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(1) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(1) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(2) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(2) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(2) atom. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a water-like geometry to one C(1) and one Se(2) atom. In the second Se site, Se(2) is bonded in a water-like geometry to one C(2) and one Se(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_H3CSe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.684
_cell_length_b   10.065
_cell_length_c   12.448
_cell_angle_alpha   86.303
_cell_angle_beta   76.801
_cell_angle_gamma   73.597
_symmetry_Int_Tables_number   1
_cell_volume   665.127
_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
  H  H0  1  0.958  0.996  0.241  1.0
  H  H1  1  0.194  0.004  0.759  1.0
  H  H2  1  0.448  0.496  0.259  1.0
  H  H3  1  0.203  0.504  0.741  1.0
  H  H4  1  0.667  0.119  0.223  1.0
  H  H5  1  0.009  0.881  0.777  1.0
  H  H6  1  0.140  0.619  0.277  1.0
  H  H7  1  0.036  0.381  0.723  1.0
  H  H8  1  0.930  0.071  0.108  1.0
  H  H9  1  0.109  0.929  0.892  1.0
  H  H10  1  0.288  0.571  0.392  1.0
  H  H11  1  0.251  0.429  0.608  1.0
  H  H12  1  0.182  0.039  0.447  1.0
  H  H13  1  0.667  0.961  0.553  1.0
  H  H14  1  0.879  0.539  0.053  1.0
  H  H15  1  0.470  0.461  0.947  1.0
  H  H16  1  0.353  0.168  0.434  1.0
  H  H17  1  0.954  0.832  0.566  1.0
  H  H18  1  0.037  0.668  0.066  1.0
  H  H19  1  0.771  0.332  0.934  1.0
  H  H20  1  0.118  0.161  0.556  1.0
  H  H21  1  0.835  0.839  0.444  1.0
  H  H22  1  0.924  0.661  0.944  1.0
  H  H23  1  0.529  0.339  0.056  1.0
  C  C24  1  0.872  0.089  0.198  1.0
  C  C25  1  0.159  0.911  0.802  1.0
  C  C26  1  0.320  0.589  0.302  1.0
  C  C27  1  0.211  0.411  0.698  1.0
  C  C28  1  0.173  0.145  0.466  1.0
  C  C29  1  0.784  0.855  0.534  1.0
  C  C30  1  0.889  0.645  0.034  1.0
  C  C31  1  0.568  0.355  0.966  1.0
  Se  Se32  1  0.011  0.242  0.220  1.0
  Se  Se33  1  0.472  0.758  0.780  1.0
  Se  Se34  1  0.480  0.742  0.280  1.0
  Se  Se35  1  0.503  0.258  0.720  1.0
  Se  Se36  1  0.900  0.279  0.411  1.0
  Se  Se37  1  0.590  0.721  0.589  1.0
  Se  Se38  1  0.561  0.779  0.089  1.0
  Se  Se39  1  0.429  0.221  0.911  1.0
[/CIF]
.
The crystal structure described by SeCH3 is Indium-like structured and crystallizes in the orthorhombic Fdd2 space group. The structure is zero-dimensional and consists of sixteen dimethyl diselenide molecules. There are two inequivalent C sites. In the first C site, C(1) is bonded in a trigonal non-coplanar geometry to one H(1), one H(2), one H(3), and one Se(1) atom. In the second C site, C(2) is bonded in a trigonal non-coplanar geometry to one H(4), one H(5), one H(6), and one Se(2) atom. There are six inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(1) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(1) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(2) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(2) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(2) atom. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a water-like geometry to one C(1) and one Se(2) atom. In the second Se site, Se(2) is bonded in a water-like geometry to one C(2) and one Se(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_H3CSe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.684
_cell_length_b   10.065
_cell_length_c   12.448
_cell_angle_alpha   86.303
_cell_angle_beta   76.801
_cell_angle_gamma   73.597
_symmetry_Int_Tables_number   1
_cell_volume   665.127
_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
  H  H0  1  0.958  0.996  0.241  1.0
  H  H1  1  0.194  0.004  0.759  1.0
  H  H2  1  0.448  0.496  0.259  1.0
  H  H3  1  0.203  0.504  0.741  1.0
  H  H4  1  0.667  0.119  0.223  1.0
  H  H5  1  0.009  0.881  0.777  1.0
  H  H6  1  0.140  0.619  0.277  1.0
  H  H7  1  0.036  0.381  0.723  1.0
  H  H8  1  0.930  0.071  0.108  1.0
  H  H9  1  0.109  0.929  0.892  1.0
  H  H10  1  0.288  0.571  0.392  1.0
  H  H11  1  0.251  0.429  0.608  1.0
  H  H12  1  0.182  0.039  0.447  1.0
  H  H13  1  0.667  0.961  0.553  1.0
  H  H14  1  0.879  0.539  0.053  1.0
  H  H15  1  0.470  0.461  0.947  1.0
  H  H16  1  0.353  0.168  0.434  1.0
  H  H17  1  0.954  0.832  0.566  1.0
  H  H18  1  0.037  0.668  0.066  1.0
  H  H19  1  0.771  0.332  0.934  1.0
  H  H20  1  0.118  0.161  0.556  1.0
  H  H21  1  0.835  0.839  0.444  1.0
  H  H22  1  0.924  0.661  0.944  1.0
  H  H23  1  0.529  0.339  0.056  1.0
  C  C24  1  0.872  0.089  0.198  1.0
  C  C25  1  0.159  0.911  0.802  1.0
  C  C26  1  0.320  0.589  0.302  1.0
  C  C27  1  0.211  0.411  0.698  1.0
  C  C28  1  0.173  0.145  0.466  1.0
  C  C29  1  0.784  0.855  0.534  1.0
  C  C30  1  0.889  0.645  0.034  1.0
  C  C31  1  0.568  0.355  0.966  1.0
  Se  Se32  1  0.011  0.242  0.220  1.0
  Se  Se33  1  0.472  0.758  0.780  1.0
  Se  Se34  1  0.480  0.742  0.280  1.0
  Se  Se35  1  0.503  0.258  0.720  1.0
  Se  Se36  1  0.900  0.279  0.411  1.0
  Se  Se37  1  0.590  0.721  0.589  1.0
  Se  Se38  1  0.561  0.779  0.089  1.0
  Se  Se39  1  0.429  0.221  0.911  1.0
[/CIF]
.