Hydrogen bonding in C-substituted nitroanilines: molecular ladders in 2-trifluoromethyl-4-nitroaniline and sheets of <i>R</i>f̱{_4^4}(12) and <i>R</i>f̱{_4^4}(32) rings in 3-trifluoromethyl-4-nitroaniline
Glidewell, Christopher; Low, John N.; McWilliam, Susan A.; Skakle, Janet M. S.; Wardell, James L.; Acta Crystallographica Section C 58 (2002) o97–o99; doi:10.1107/S0108270101021254

data_2012526
_publ_section_title
;
 Hydrogen bonding in C-substituted nitroanilines: molecular ladders in
 2-trifluoromethyl-4-nitroaniline and sheets of
 <i>R</i>f&#x0331;{_4^4}(12) and <i>R</i>f&#x0331;{_4^4}(32) rings in
 3-trifluoromethyl-4-nitroaniline
;
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o97
_journal_page_last               o99
_journal_paper_doi               10.1107/S0108270101021254
_journal_volume                  58
_journal_year                    2002
_chemical_formula_iupac          'C7 H5 F3 N2 O2'
_chemical_formula_moiety         'C7 H5 F3 N2 O2'
_chemical_formula_sum            'C7 H5 F3 N2 O2'
_chemical_formula_weight         206.13
_chemical_name_systematic
;
2-Trifluoromethyl-4-nitroaniline
;
_space_group_IT_number           62
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.0274(4)
_cell_length_b                   6.5933(4)
_cell_length_c                   13.1170(8)
_cell_measurement_reflns_used    961
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.55
_cell_measurement_theta_min      2.74
_cell_volume                     780.73(8)
_computing_cell_refinement       'DENZO-SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'KappaCCD Server Software (Nonius, 1997)'
_computing_data_reduction        DENZO-SMN
_computing_molecular_graphics    'PLATON (Spek, 2001)'
_computing_publication_material  'SHELXL97 and PRPKAPPA (Ferguson, 1999)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full .995
_diffrn_measured_fraction_theta_max .983
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '\f scans, and \w scans with \k offsets'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed X-ray tube'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     .71073
_diffrn_reflns_av_R_equivalents  .053
_diffrn_reflns_av_sigmaI/netI    .043
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            3944
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         27.55
_diffrn_reflns_theta_min         2.74
_diffrn_standards_decay_%        negligible
_exptl_absorpt_coefficient_mu    .175
_exptl_absorpt_correction_T_max  .998
_exptl_absorpt_correction_T_min  .987
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(DENZO-SMN; Otwinowski & Minor, 1997)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.754
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             416
_exptl_crystal_size_max          .20
_exptl_crystal_size_mid          .15
_exptl_crystal_size_min          .01
_refine_diff_density_max         .31
_refine_diff_density_min         -.29
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.064
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     82
_refine_ls_number_reflns         961
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.064
_refine_ls_R_factor_all          .061
_refine_ls_R_factor_gt           .041
_refine_ls_shift/su_max          .001
_refine_ls_shift/su_mean         .000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0691P)^2^+0.0530P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          .105
_refine_ls_wR_factor_ref         .118
_reflns_number_gt                725
_reflns_number_total             961
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            sk1528.cif
_cod_data_source_block           I
_cod_depositor_comments
;
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      Pnma
_cod_database_code               2012526
_cod_database_fobs_code          2012526