Why Do Organic Compounds Crystallise Well or Badly or Ever so Slowly? Why Is Crystallisation Nevertheless Such a Good Purification Technique?†
Hursthouse, Michael B.; Huth, L. Susanne; Threlfall, Terence L.; Organic Process Research & Development 13 (2009) 1231–; doi:10.1021/op900169b

data_1504324
_publ_section_title
;
 Why Do Organic Compounds Crystallise Well or Badly or Ever so Slowly? Why
 Is Crystallisation Nevertheless Such a Good Purification
 Technique?&#x2020;
;
_journal_issue                   6
_journal_name_full               'Organic Process Research &amp; Development'
_journal_page_first              1231
_journal_paper_doi               10.1021/op900169b
_journal_volume                  13
_journal_year                    2009
_chemical_formula_sum            'C8 H6 F3 N O'
_chemical_formula_weight         189.14
_chemical_name_common            para-Trifluoromethylformanilide
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                77.686(3)
_cell_angle_beta                 79.631(4)
_cell_angle_gamma                70.525(4)
_cell_formula_units_Z            4
_cell_length_a                   7.1142(3)
_cell_length_b                   10.3129(6)
_cell_length_c                   12.2349(8)
_cell_measurement_reflns_used    29068
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     821.03(8)
_computing_cell_refinement
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_data_collection       'COLLECT (Hooft, R.W.W., 1998)'
_computing_data_reduction
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type
'Bruker-Nonius Roper CCD camera on \k-goniostat'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0620
_diffrn_reflns_av_sigmaI/netI    0.0540
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            19318
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         2.94
_exptl_absorpt_coefficient_mu    0.147
_exptl_absorpt_correction_T_max  0.9941
_exptl_absorpt_correction_T_min  0.9683
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2007/2 (Sheldrick, G.M., 2007)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.530
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'cut slab'
_exptl_crystal_F_000             384
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.380
_refine_diff_density_min         -0.367
_refine_diff_density_rms         0.055
_refine_ls_extinction_coef       0.029(6)
_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   1.010
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     270
_refine_ls_number_reflns         3762
_refine_ls_number_restraints     77
_refine_ls_restrained_S_all      1.119
_refine_ls_R_factor_all          0.1004
_refine_ls_R_factor_gt           0.0577
_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^)+(0.0767P)^2^+0.3941P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1384
_refine_ls_wR_factor_ref         0.1617
_reflns_number_gt                2449
_reflns_number_total             3762
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            op900169b_si_001.cif
_cod_data_source_block           2008lsh059
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1504324