2,4-Difluorophenylboronic acid
Rodríguez-Cuamatzi, Patricia; Tlahuext, Hugo; Höpfl, Herbert; Acta Crystallographica Section E 65 (2009) o44–o45; doi:10.1107/S1600536808040646

data_2220502
_publ_section_title
;
 2,4-Difluorophenylboronic acid
;
_journal_coeditor_code           HB2865
_journal_issue                   1
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o44
_journal_page_last               o45
_journal_paper_doi               10.1107/S1600536808040646
_journal_volume                  65
_journal_year                    2009
_chemical_formula_iupac          'C6 H5 B F2 O2'
_chemical_formula_moiety         'C6 H5 B F2 O2'
_chemical_formula_sum            'C6 H5 B F2 O2'
_chemical_formula_weight         157.91
_chemical_melting_point_gt       521
_chemical_melting_point_lt       522
_chemical_name_systematic
;
2,4-Difluorophenylboronic 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                 95.450(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   3.7617(11)
_cell_length_b                   12.347(4)
_cell_length_c                   14.620(4)
_cell_measurement_reflns_used    1052
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26.17
_cell_measurement_theta_min      2.30
_cell_volume                     676.0(3)
_computing_cell_refinement       'SAINT-Plus-NT (Bruker, 2001)'
_computing_data_collection       'SMART (Bruker, 2000)'
_computing_data_reduction        'SAINT-Plus-NT (Bruker, 2001)'
_computing_molecular_graphics    'CAMERON (Watkin <i>et al.</i>,  1996)'
_computing_publication_material
;
PLATON (Spek, 2003) and publCIF (Westrip, 2009)
;
_computing_structure_refinement  'SHELXTL-NT (Sheldrick, 2008)'
_computing_structure_solution    'SHELXTL-NT (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 8.3
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker SMART APEX CCD area-detector'
_diffrn_measurement_method       '\f and \w'
_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  0.0278
_diffrn_reflns_av_sigmaI/netI    0.0310
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -3
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            3196
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         2.16
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.146
_exptl_absorpt_correction_T_max  0.968
_exptl_absorpt_correction_T_min  0.947
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.552
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             320
_exptl_crystal_size_max          0.37
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.139
_refine_diff_density_min         -0.176
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.150
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     106
_refine_ls_number_reflns         1190
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.149
_refine_ls_R_factor_all          0.0655
_refine_ls_R_factor_gt           0.0557
_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^)+(0.0442P)^2^+0.2673P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1213
_refine_ls_wR_factor_ref         0.1271
_reflns_number_gt                1012
_reflns_number_total             1190
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            hb2865.cif
_cod_data_source_block           I
_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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2220502
_cod_database_fobs_code          2220502