Atomic thermal motions studied by variable-temperature X-ray diffraction and related to non-linear optical properties of crystalline <i>meta</i>-di-nitrobenzene
Wójcik, Grażyna; Mossakowska, Izabela; Holband, Jolanta; Bartkowiak, Wojciech; Acta Crystallographica Section B 58 (2002) 998–1004; doi:10.1107/S0108768102015033

data_2103492
_publ_section_title
;
 Atomic thermal motions studied by variable-temperature X-ray
 diffraction and related to non-linear optical properties of
 crystalline <i>meta</i>-di-nitrobenzene
;
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              998
_journal_page_last               1004
_journal_paper_doi               10.1107/S0108768102015033
_journal_volume                  58
_journal_year                    2002
_chemical_formula_sum            'C6 H4 N2 O4'
_chemical_formula_weight         168.11
_chemical_name_common            meta-dinitrobenzene
_chemical_name_systematic        1,3-dinitrobenzene
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_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                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.052(4)
_cell_length_b                   13.224(4)
_cell_length_c                   3.7140(10)
_cell_measurement_reflns_used    958
_cell_measurement_temperature    160.0(10)
_cell_measurement_theta_max      16.759
_cell_measurement_theta_min      3.334
_cell_volume                     690.1(3)
_computing_cell_refinement       'KUMA Diffraction KM4CCD software, 1999'
_computing_data_collection       'KUMA Diffraction KM4CCD software, 1999'
_computing_data_reduction        'KUMA Diffraction KM4CCD software, 1999'
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 1997)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      160.0(10)
_diffrn_measured_fraction_theta_full 0.890
_diffrn_measured_fraction_theta_max 0.890
_diffrn_measurement_device_type  'KUMA Diffraction KM4CCD'
_diffrn_measurement_method       'omega scan'
_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  0.1000
_diffrn_reflns_av_sigmaI/netI    0.0395
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       2
_diffrn_reflns_limit_l_min       -5
_diffrn_reflns_number            3208
_diffrn_reflns_theta_full        31.19
_diffrn_reflns_theta_max         31.19
_diffrn_reflns_theta_min         4.23
_exptl_absorpt_coefficient_mu    0.140
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.618
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             344
_exptl_crystal_size_max          0.72
_exptl_crystal_size_mid          0.33
_exptl_crystal_size_min          0.23
_refine_diff_density_max         0.292
_refine_diff_density_min         -0.319
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.167
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     109
_refine_ls_number_reflns         1212
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.166
_refine_ls_R_factor_all          0.0619
_refine_ls_R_factor_gt           0.0540
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0717P)^2^+0.2515P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1307
_refine_ls_wR_factor_ref         0.1554
_reflns_number_gt                1077
_reflns_number_total             1212
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ns0009.cif
_cod_data_source_block           160
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0717P)^2^+0.2515P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0717P)^2^+0.2515P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_sg_symbol_H-M      Pna2(1)
_cod_database_code               2103492
_cod_database_fobs_code          2103492