C10H22SeSn2
Skabara, Peter J.; Coles, Simon J.; Hursthouse, Michael B.; Crystal Structure Report Archive  (2004) 1005–; doi:

data_1519739
_publ_section_title
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 C10H22SeSn2
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_journal_name_full               'Crystal Structure Report Archive'
_journal_page_first              1005
_journal_year                    2004
_chemical_formula_sum            'C10 H22 Se Sn2'
_chemical_formula_weight         458.62
_space_group_IT_number           113
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P -4 2ab'
_symmetry_space_group_name_H-M   'P -4 21 m'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   10.6034(2)
_cell_length_b                   10.6034(1)
_cell_length_c                   6.3943(2)
_cell_measurement_reflns_used    9115
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     718.92(3)
_computing_cell_refinement       'DENZO and COLLECT'
_computing_data_collection
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'DENZO (Otwinowski and Minor, 1997) & COLLECT (Hooft, 1998) '
;
_computing_data_reduction        'DENZO and COLLECT'
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Enraf Nonius KappaCCD area detector'
_diffrn_measurement_method       '\w and \f scans to fill Ewald sphere'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enraf Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1260
_diffrn_reflns_av_sigmaI/netI    0.0434
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            9974
_diffrn_reflns_theta_full        27.57
_diffrn_reflns_theta_max         27.57
_diffrn_reflns_theta_min         3.19
_exptl_absorpt_coefficient_mu    5.970
_exptl_absorpt_correction_T_max  0.4887
_exptl_absorpt_correction_T_min  0.1987
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SORTAV (Blessing, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.119
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             432
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.14
_refine_diff_density_max         2.145
_refine_diff_density_min         -1.662
_refine_diff_density_rms         0.280
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.12(3)
_refine_ls_extinction_coef       0.033(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.221
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     42
_refine_ls_number_reflns         896
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.221
_refine_ls_R_factor_all          0.0378
_refine_ls_R_factor_gt           0.0378
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0524P)^2^+0.7327P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0928
_refine_ls_wR_factor_ref         0.0928
_reflns_number_gt                895
_reflns_number_total             896
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            eCrystal-1005.cif
_cod_data_source_block           s92
_cod_depositor_comments
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Citation :
Skabara, Peter J. and Coles, Simon J. and Hursthouse, Michael B. (2004) 
University of Southampton, Crystal Structure Report Archive. 
(doi:10.5258/ecrystals/1005)

More at:
http://ecrystals.chem.soton.ac.uk/1005/

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 3392 2015-05-12 13:50:21Z andrius 
;
_cod_original_cell_volume        718.92(2)
_cod_original_sg_symbol_H-M      'P -4 2(1) m'
_cod_database_code               1519739