Orientational disorder in 4-chloronitrobenzene
Thomas, Lynne H.; Cole, Jacqueline M.; Wilson, Chick C.; Acta Crystallographica Section C 64 (2008) o296–o302; doi:10.1107/S0108270108008998

data_2016589
_publ_section_title
;
 Orientational disorder in 4-chloronitrobenzene
;
_journal_coeditor_code           HJ3058
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o296
_journal_page_last               o302
_journal_paper_doi               10.1107/S0108270108008998
_journal_volume                  64
_journal_year                    2008
_chemical_formula_iupac          'C6 H4 Cl N O2'
_chemical_formula_moiety         'C6 H4 Cl N O2'
_chemical_formula_sum            'C6 H4 Cl N O2'
_chemical_formula_weight         157.55
_chemical_name_common            1-chloro-4-nitrobenzene
_chemical_name_systematic
;
4-chloronitrobenzene
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 96.639(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   3.7938(3)
_cell_length_b                   6.7564(6)
_cell_length_c                   13.3672(15)
_cell_measurement_reflns_used    1300
_cell_measurement_temperature    250(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      1.02
_cell_volume                     340.34(6)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor, 1997)'
_computing_data_collection
;
COLLECT (Nonius, 1998)
;
_computing_data_reduction
;
HKL Denzo and Scalepack (Otwinowski & Minor, 1997)
;
_computing_molecular_graphics    'SHELXTL-Plus (Sheldrick, 2008)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      250(2)
_diffrn_measured_fraction_theta_full 0.958
_diffrn_measured_fraction_theta_max 0.958
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       CCD
_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  0.0366
_diffrn_reflns_av_sigmaI/netI    0.0501
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -4
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            2071
_diffrn_reflns_theta_full        27.59
_diffrn_reflns_theta_max         27.59
_diffrn_reflns_theta_min         3.38
_exptl_absorpt_coefficient_mu    0.489
_exptl_absorpt_correction_T_max  0.944
_exptl_absorpt_correction_T_min  0.844
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
multi-scan from symmetry-related measurements
(SORTAV; Blessing, 1995)
;
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.534
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             160
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.128
_refine_diff_density_min         -0.150
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.081
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     72
_refine_ls_number_reflns         748
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.081
_refine_ls_R_factor_all          0.1151
_refine_ls_R_factor_gt           0.0521
_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^)+(0.0603P)^2^+0.0020P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1089
_refine_ls_wR_factor_ref         0.1392
_reflns_number_gt                385
_reflns_number_total             748
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            hj3058.cif
_cod_data_source_block           I_250
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               2016589
_cod_database_fobs_code          2016589