Formation of racemic crystals of transition metal complexes by grinding 1 : 1 mixtures of enantiomeric crystals.
Nakamura, Asao; Sato, Tomohiro; Kuroda, Reiko; Chemical communications (Cambridge, England)  (2004) 2858–2859; doi:10.1039/b409006c

data_7102724
_publ_section_title
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 Formation of racemic crystals of transition metal complexes by
 grinding 1 : 1 mixtures of enantiomeric crystals.
;
_journal_issue                   24
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              2858
_journal_page_last               2859
_journal_paper_doi               10.1039/b409006c
_journal_year                    2004
_chemical_formula_sum            'C72 H50 F24 N12 O Os2 P4'
_chemical_formula_weight         2059.52
_chemical_name_systematic
;
?
;
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 101.6650(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   36.6813(19)
_cell_length_b                   15.8390(8)
_cell_length_c                   12.1451(6)
_cell_measurement_reflns_used    10791
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.90
_cell_measurement_theta_min      1.13
_cell_volume                     6910.5(6)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.963
_diffrn_measured_fraction_theta_max 0.963
_diffrn_measurement_device_type  'Bruker APEX'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0264
_diffrn_reflns_av_sigmaI/netI    0.0448
_diffrn_reflns_limit_h_max       46
_diffrn_reflns_limit_h_min       -47
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            21341
_diffrn_reflns_theta_full        27.90
_diffrn_reflns_theta_max         27.90
_diffrn_reflns_theta_min         1.13
_exptl_absorpt_coefficient_mu    3.890
_exptl_absorpt_correction_T_max  0.5930
_exptl_absorpt_correction_T_min  0.5101
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'Bruker SADABS'
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.980
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             4008
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         1.730
_refine_diff_density_min         -0.555
_refine_diff_density_rms         0.128
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.204(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     601
_refine_ls_number_reflns         10791
_refine_ls_number_restraints     65
_refine_ls_restrained_S_all      1.198
_refine_ls_R_factor_all          0.0321
_refine_ls_R_factor_gt           0.0313
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0344P)^2^+35.4633P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0756
_refine_ls_wR_factor_ref         0.0766
_reflns_number_gt                10539
_reflns_number_total             10791
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b409006c.txt
_cod_data_source_block           compound_8
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
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_cod_original_sg_symbol_H-M      Cc
_cod_database_code               7102724