Reorganized, weak C–H⋯O interactions directly modify the mechanical properties and compaction performance of a series of nitrobenzoic acids
Singaraju, Aditya B.; Nguyen, Kyle; Swenson, Dale C.; Iyer, Mamta; Haware, Rahul V.; Stevens, Lewis L.; CrystEngComm  (2017) –; doi:10.1039/C7CE00238F

data_7228112
_publ_section_title
;
 Reorganized, weak C--H&#x22EF;O interactions directly modify the
 mechanical properties and compaction performance of a series of
 nitrobenzoic acids
;
_journal_name_full               CrystEngComm
_journal_paper_doi               10.1039/C7CE00238F
_journal_year                    2017
_chemical_formula_moiety         'C8 H7 N O4'
_chemical_formula_sum            'C8 H7 N O4'
_chemical_formula_weight         181.15
_chemical_melting_point          461.5(15)
_chemical_name_systematic        '4-Methyl 3-nitrobenzoic acid'
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2017-01-23 deposited with the CCDC.
2017-03-28 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 99.9210(10)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   7.4313(3)
_cell_length_b                   21.1153(6)
_cell_length_c                   10.3853(4)
_cell_measurement_reflns_used    9954
_cell_measurement_temperature    190(2)
_cell_measurement_theta_max      27.9
_cell_measurement_theta_min      2.21
_cell_volume                     1605.23(10)
_computing_cell_refinement       'APEX-II (Bruler-AXS, 2014)'
_computing_data_collection       'APEX-II (Bruler-AXS, 2014)'
_computing_data_reduction        'APEX-II (Bruler-AXS, 2014)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'APEX-II (Bruler-AXS, 2014)'
_diffrn_ambient_temperature      190(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker-Nonius Kappa Apex-II'
_diffrn_measurement_method       'CCD phi and omega scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0220
_diffrn_reflns_av_unetI/netI     0.0142
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            29640
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.936
_diffrn_reflns_theta_min         2.772
_diffrn_source                   'fine focus sealed tube'
_exptl_absorpt_coefficient_mu    0.123
_exptl_absorpt_correction_T_max  0.9680
_exptl_absorpt_correction_T_min  0.9630
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Apex-II SAD-ABS (Sheldrick, 2008)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.499
_exptl_crystal_description       'iregular prism'
_exptl_crystal_F_000             752
_exptl_crystal_size_max          0.310
_exptl_crystal_size_mid          0.290
_exptl_crystal_size_min          0.270
_refine_diff_density_max         0.287
_refine_diff_density_min         -0.213
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.061
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     268
_refine_ls_number_reflns         3834
_refine_ls_number_restraints     50
_refine_ls_restrained_S_all      1.068
_refine_ls_R_factor_all          0.0473
_refine_ls_R_factor_gt           0.0375
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0565P)^2^+0.4914P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1033
_refine_ls_wR_factor_ref         0.1121
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3173
_reflns_number_total             3834
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7ce00238f2.cif
_cod_data_source_block           Ste168
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '460-463' was changed to '461.5(15)'
- the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 
;
_cod_database_code               7228112
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.963
_shelx_estimated_absorpt_t_max   0.968
_shelx_res_checksum              72560