Polymorphs of Picryl Bromide
Parrish, Damon A.; Deschamps, Jeffrey R.; Gilardi, Richard D.; Butcher, Raymond J.; Crystal Growth & Design 8 (2008) 57–; doi:10.1021/cg700727n

data_4503871
_publ_section_title
;
 Polymorphs of Picryl Bromide
;
_journal_issue                   1
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              57
_journal_paper_doi               10.1021/cg700727n
_journal_volume                  8
_journal_year                    2008
_chemical_formula_moiety         'C6 H2 Br N3 O6'
_chemical_formula_sum            'C6 H2 Br N3 O6'
_chemical_formula_weight         292.02
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           170
_symmetry_cell_setting           hexagonal
_symmetry_space_group_name_Hall  'P 65'
_symmetry_space_group_name_H-M   'P 65'
_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                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            18
_cell_length_a                   14.88120(10)
_cell_length_b                   14.88120(10)
_cell_length_c                   22.5449(4)
_cell_measurement_reflns_used    6622
_cell_measurement_temperature    294(2)
_cell_measurement_theta_max      66.64
_cell_measurement_theta_min      3.43
_cell_volume                     4323.69(9)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      294(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker SMART 1000 CCD area detector'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0394
_diffrn_reflns_av_sigmaI/netI    0.0311
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            21534
_diffrn_reflns_theta_full        66.83
_diffrn_reflns_theta_max         66.83
_diffrn_reflns_theta_min         3.43
_diffrn_standards_decay_%        none
_exptl_absorpt_coefficient_mu    6.113
_exptl_absorpt_correction_T_max  0.883
_exptl_absorpt_correction_T_min  0.167
_exptl_absorpt_correction_type   integration
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    2.019
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'thin plate'
_exptl_crystal_F_000             2556
_exptl_crystal_size_max          .35
_exptl_crystal_size_mid          .15
_exptl_crystal_size_min          .02
_refine_diff_density_max         0.604
_refine_diff_density_min         -0.265
_refine_diff_density_rms         0.063
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.46(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     434
_refine_ls_number_reflns         4940
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.0394
_refine_ls_R_factor_gt           0.0343
_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^)+(0.0561P)^2^+0.7838P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0886
_refine_ls_wR_factor_ref         0.0927
_reflns_number_gt                4449
_reflns_number_total             4940
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            hapbr04mpub.cif
_cod_data_source_block           hapbr04m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Hexagonal' changed to 'hexagonal'
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_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      P6(5)
_cod_database_code               4503871