Structural landscape of benzoic acid: using experimental crystal structures of fluorobenzoic acids as a probe
Ritesh Dubey; Mysore S. Pavan; Gautam R. Desiraju; Chem.Commun. 48 (2012) 9020–; doi:10.1039/c2cc33811d

data_7108254
_publ_section_title
;
 Structural landscape of benzoic acid: using experimental crystal
 structures of fluorobenzoic acids as a probe
;
_journal_name_full               Chem.Commun.
_journal_page_first              9020
_journal_paper_doi               10.1039/c2cc33811d
_journal_volume                  48
_journal_year                    2012
_chemical_compound_source        'see text'
_chemical_formula_moiety         'C7 H3 F2 O2'
_chemical_formula_sum            'C7 H3 F2 O2'
_chemical_formula_weight         157.09
_chemical_name_common            '2,4-difluorobenzoic acid'
_chemical_name_systematic
;
2,4-difluorobenzoic acid
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90
_cell_angle_beta                 92.908(5)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   3.6912(2)
_cell_length_b                   6.4038(3)
_cell_length_c                   26.3062(15)
_cell_measurement_reflns_used    1799
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      29.0869
_cell_measurement_theta_min      2.3212
_cell_volume                     621.02(6)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.19 (release 27-10-2011 CrysAlis171 .NET)
(compiled Oct 27 2011,15:02:11)
;
_computing_data_collection
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.19 (release 27-10-2011 CrysAlis171 .NET)
(compiled Oct 27 2011,15:02:11)
;
_computing_data_reduction
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.19 (release 27-10-2011 CrysAlis171 .NET)
(compiled Oct 27 2011,15:02:11)
;
_computing_publication_material  'PLATON (Spek, 2003)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 16.0839
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Xcalibur, Eos, Nova'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_source         'Mova (Mo) X-ray Source'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.7107
_diffrn_reflns_av_R_equivalents  0.0248
_diffrn_reflns_av_sigmaI/netI    0.0246
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -4
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            3872
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         3.10
_exptl_absorpt_coefficient_mu    0.161
_exptl_absorpt_correction_T_max  0.9826
_exptl_absorpt_correction_T_min  0.9175
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.19 (release 27-10-2011 CrysAlis171 .NET)
(compiled Oct 27 2011,15:02:11)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.680
_exptl_crystal_density_method    'Not Measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             316
_exptl_crystal_size_max          0.54
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.223
_refine_diff_density_min         -0.270
_refine_diff_density_rms         0.058
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.184
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     121
_refine_ls_number_reflns         1265
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.184
_refine_ls_R_factor_all          0.0502
_refine_ls_R_factor_gt           0.0459
_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^)+(0.0349P)^2^+0.6516P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1114
_refine_ls_wR_factor_ref         0.1140
_reflns_number_gt                1147
_reflns_number_total             1265
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2cc33811d.txt
_cod_data_source_block           red
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7108254