Design of Potentially Photorefractive Liquid Crystalline Materials: Derivatives of 3,6-Disubstituted Carbazole
Belloni, Maura; Kariuki, Benson M.; Manickam, M.; Wilkie, John; Preece, Jon A.; Crystal Growth & Design 5 (2005) 1443–; doi:10.1021/cg049580s

data_4504866
_publ_section_title
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 Design of Potentially Photorefractive Liquid Crystalline
 Materials:&#x2009; Derivatives of 3,6-Disubstituted Carbazole
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_journal_issue                   4
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              1443
_journal_paper_doi               10.1021/cg049580s
_journal_volume                  5
_journal_year                    2005
_chemical_formula_moiety         'C12 H7 Br2 N'
_chemical_formula_sum            'C12 H7 Br2 N'
_chemical_formula_weight         325.01
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 90.849(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   11.902(4)
_cell_length_b                   11.061(3)
_cell_length_c                   3.9951(13)
_cell_measurement_reflns_used    1202
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      25.74
_cell_measurement_theta_min      2.51
_cell_volume                     525.9(3)
_computing_cell_refinement       'MSC Software'
_computing_data_collection       'MSC Software'
_computing_data_reduction        'MSC Software'
_computing_structure_refinement  SHELXL97
_computing_structure_solution    SHELXS86
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.918
_diffrn_measured_fraction_theta_max 0.918
_diffrn_measurement_device_type  'Rigaku R-axis IIc Image plate'
_diffrn_measurement_method       'Image plate slices'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0662
_diffrn_reflns_av_sigmaI/netI    0.1170
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       4
_diffrn_reflns_limit_l_min       -4
_diffrn_reflns_number            2403
_diffrn_reflns_theta_full        25.74
_diffrn_reflns_theta_max         25.74
_diffrn_reflns_theta_min         2.51
_exptl_absorpt_coefficient_mu    7.668
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    2.052
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             312
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.1
_refine_diff_density_max         1.209
_refine_diff_density_min         -0.908
_refine_diff_density_rms         0.210
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.11(5)
_refine_ls_extinction_coef       0.14(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   0.998
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     137
_refine_ls_number_reflns         1457
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.998
_refine_ls_R_factor_all          0.0775
_refine_ls_R_factor_gt           0.0705
_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^)+(0.1043P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1759
_refine_ls_wR_factor_ref         0.1812
_reflns_number_gt                1202
_reflns_number_total             1457
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg049580ssi20050324_100746.cif
_cod_data_source_block           mab052_3
_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_values 1715 2011-07-08 13:25:40Z adriana 
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_cod_original_sg_symbol_H-M      P21
_cod_database_code               4504866