Tuning Proton Disorder in 3,5-Dinitrobenzoic Acid Dimers: the Effect of Local Environment
Jones, Andrew O. F.; Blagden, Nicholas; McIntyre, Garry J.; Parkin, Andrew; Seaton, Colin C.; Thomas, Lynne H.; Wilson, Chick C.; Crystal Growth & Design 13 (2013) 497–; doi:10.1021/cg300906j

data_4510616
_publ_section_title
;
 Tuning Proton Disorder in 3,5-Dinitrobenzoic Acid Dimers: the Effect of
 Local Environment
;
_journal_issue                   2
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              497
_journal_paper_doi               10.1021/cg300906j
_journal_volume                  13
_journal_year                    2013
_chemical_formula_sum            'C7 H4 N2 O6'
_chemical_formula_weight         212.12
_chemical_name_systematic
;
 3,5-dinitrobenzoic acid
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2012-05-08 # Formatted by publCIF
;
_cell_angle_alpha                90.00
_cell_angle_beta                 111.118(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   21.042(3)
_cell_length_b                   8.7285(9)
_cell_length_c                   9.7693(10)
_cell_measurement_reflns_used    7681
_cell_measurement_temperature    300
_cell_measurement_theta_max      55.26
_cell_measurement_theta_min      6.28
_cell_volume                     1673.8(3)
_computing_cell_refinement       'CrystalClear 1.4.0 (Rigaku, 2008)'
_computing_data_collection       'CrystalClear 1.4.0 (Rigaku, 2008)'
_computing_data_reduction        'CrystalClear 1.4.0 (Rigaku, 2008)'
_computing_molecular_graphics    'Mercury (McRae, 2006)'
_computing_publication_material  'WINGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      300
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Rigaku R-AXIS RAPID IP Image Plate'
_diffrn_measurement_method       'Image Plate'
_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  0.0166
_diffrn_reflns_av_sigmaI/netI    0.0115
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            10811
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.14
_exptl_absorpt_coefficient_mu    0.152
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.8882
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'ABSCOR, Rigaku 1995'
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.684
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             864
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.228
_refine_diff_density_min         -0.154
_refine_diff_density_rms         0.034
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.104
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     157
_refine_ls_number_reflns         1916
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.104
_refine_ls_R_factor_all          0.0421
_refine_ls_R_factor_gt           0.0345
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0568P)^2^+0.3740P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1006
_refine_ls_wR_factor_ref         0.1059
_reflns_number_gt                1543
_reflns_number_total             1916
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            35-dnba_C2c_300K_X-ray_disordered_CIF.cif
_cod_data_source_block           35-dnba_300k
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               4510616