#------------------------------------------------------------------------------
#$Date: 2025-08-21 03:19:08 +0300 (Thu, 21 Aug 2025) $
#$Revision: 301842 $
#$URL: file:///home/coder/svn-repositories/cod/cif/4/50/16/4501674.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_4501674
loop_
_publ_author_name
'Sarma, Bipul'
'Sanphui, Palash'
'Nangia, Ashwini'
_publ_section_title
;
 Polymorphism in Isomeric Dihydroxybenzoic Acids
;
_journal_issue                   5
_journal_name_full               'Crystal Growth & Design'
_journal_page_first              2388
_journal_paper_doi               10.1021/cg100220z
_journal_volume                  10
_journal_year                    2010
_chemical_formula_sum            'C7 H6 O4'
_chemical_formula_weight         154.12
_chemical_name_systematic
; 
2,3-Dihydroxybenzoic acid 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_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                 103.043(8)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   5.338(3)
_cell_length_b                   5.486(3)
_cell_length_c                   22.496(11)
_cell_measurement_reflns_used    2911
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      25.96
_cell_measurement_theta_min      3.72
_cell_volume                     641.8(6)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0254
_diffrn_reflns_av_sigmaI/netI    0.0180
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            6248
_diffrn_reflns_theta_full        26.08
_diffrn_reflns_theta_max         26.08
_diffrn_reflns_theta_min         1.86
_exptl_absorpt_coefficient_mu    0.134
_exptl_absorpt_correction_T_max  0.9920
_exptl_absorpt_correction_T_min  0.9423
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.595
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             320
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.236
_refine_diff_density_min         -0.173
_refine_diff_density_rms         0.041
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.133
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     124
_refine_ls_number_reflns         1268
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.133
_refine_ls_R_factor_all          0.0560
_refine_ls_R_factor_gt           0.0480
_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/[σ²(Fo²)+(0.0539P)²+0.1975P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1155
_refine_ls_wR_factor_ref         0.1202
_reflns_number_gt                1093
_reflns_number_total             1268
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg100220z_si_003.cif
_cod_data_source_block           2,3-DHBA_sublimed_M
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        641.8(5)
_cod_original_sg_symbol_H-M      'P2(1)/n  '
_cod_database_code               4501674
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x+1/2, y+1/2, -z+1/2'
'-x, -y, -z'
'x-1/2, -y-1/2, z-1/2'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_occupancy
_atom_site_symmetry_multiplicity
_atom_site_calc_flag
O2 O 0.9609(3) 1.1846(3) 0.06623(6) 0.0516(4) Uani 1 1 d
O1 O 0.7856(3) 0.8425(3) 0.02275(6) 0.0550(4) Uani 1 1 d
O3 O 0.4352(3) 0.6170(3) 0.06519(7) 0.0557(5) Uani 1 1 d
C2 C 0.6646(3) 0.9782(3) 0.11196(8) 0.0377(4) Uani 1 1 d
O4 O 0.1668(3) 0.5923(3) 0.15282(7) 0.0544(4) Uani 1 1 d
C5 C 0.3866(4) 0.9370(4) 0.20198(8) 0.0421(5) Uani 1 1 d
C7 C 0.7027(4) 1.1455(4) 0.16031(9) 0.0421(5) Uani 1 1 d
C3 C 0.4871(4) 0.7892(3) 0.10977(8) 0.0389(4) Uani 1 1 d
C4 C 0.3464(3) 0.7707(4) 0.15514(8) 0.0393(5) Uani 1 1 d
C1 C 0.8082(4) 0.9958(4) 0.06379(8) 0.0408(5) Uani 1 1 d
C6 C 0.5646(4) 1.1225(4) 0.20486(9) 0.0441(5) Uani 1 1 d
H5 H 0.289(4) 0.921(3) 0.2332(9) 0.040(5) Uiso 1 1 d
H6 H 0.591(4) 1.238(4) 0.2362(10) 0.044(5) Uiso 1 1 d
H7 H 0.823(4) 1.270(5) 0.1607(10) 0.057(6) Uiso 1 1 d
H3 H 0.544(5) 0.645(5) 0.0421(13) 0.080(9) Uiso 1 1 d
H4 H 0.169(5) 0.504(5) 0.1251(13) 0.075(9) Uiso 1 1 d
H2 H 1.043(5) 1.177(5) 0.0358(13) 0.084(8) Uiso 1 1 d
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_23
_atom_site_aniso_U_13
_atom_site_aniso_U_12
O2 0.0629(9) 0.0589(10) 0.0421(8) -0.0068(6) 0.0312(7) -0.0114(7)
O1 0.0718(10) 0.0591(9) 0.0439(8) -0.0106(7) 0.0335(7) -0.0108(7)
O3 0.0741(10) 0.0555(9) 0.0451(8) -0.0131(7) 0.0294(8) -0.0155(8)
C2 0.0398(10) 0.0436(10) 0.0325(9) 0.0035(8) 0.0141(7) 0.0061(8)
O4 0.0627(10) 0.0547(9) 0.0532(9) -0.0058(8) 0.0287(7) -0.0142(7)
C5 0.0427(10) 0.0535(12) 0.0347(10) 0.0026(8) 0.0183(8) 0.0054(9)
C7 0.0429(10) 0.0471(11) 0.0400(10) -0.0036(8) 0.0173(8) -0.0012(9)
C3 0.0457(10) 0.0410(10) 0.0319(9) -0.0001(8) 0.0129(8) 0.0040(8)
C4 0.0404(10) 0.0430(10) 0.0370(9) 0.0043(8) 0.0139(8) 0.0010(8)
C1 0.0470(11) 0.0462(11) 0.0327(9) 0.0004(8) 0.0160(8) 0.0020(9)
C6 0.0481(11) 0.0501(12) 0.0383(10) -0.0079(9) 0.0187(8) 0.0007(9)
loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
C C 0.0033 0.0016 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
H H 0.0000 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
O O 0.0106 0.0060 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
C3 C2 C7 119.43(16)
C3 C2 C1 119.12(16)
C7 C2 C1 121.45(17)
C4 C5 C6 120.72(16)
C6 C7 C2 119.77(19)
O3 C3 C2 124.40(16)
O3 C3 C4 115.70(17)
C2 C3 C4 119.90(17)
O4 C4 C5 119.54(16)
O4 C4 C3 120.81(17)
C5 C4 C3 119.64(17)
O1 C1 O2 121.63(16)
O1 C1 C2 121.92(17)
O2 C1 C2 116.44(16)
C7 C6 C5 120.52(19)
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
O2 C1 1.311(2)
O1 C1 1.234(2)
O3 C3 1.360(2)
C2 C3 1.398(3)
C2 C7 1.403(3)
C2 C1 1.465(2)
O4 C4 1.363(2)
C5 C4 1.373(3)
C5 C6 1.384(3)
C7 C6 1.377(3)
C3 C4 1.401(3)
loop_
_cod_related_entry_id
_cod_related_entry_database
_cod_related_entry_code
1 ChemSpider 18
2 PubChem 19
