A tautomeric equilibrium between functionalized 2-formylphenylboronic acids and corresponding 1,3-dihydro-1,3-dihydroxybenzo[c][2,1]oxaboroles
Sergiusz Luliński; Izabela Madura; Janusz Serwatowski; Halina Szatyłowicz; Janusz Zachara; New Journal of Chemistry 31 (2007) 144–; doi:10.1039/b611195e

data_7052072
_publ_section_title
;
 A tautomeric equilibrium between functionalized 2-formylphenylboronic
 acids and corresponding
 1,3-dihydro-1,3-dihydroxybenzo[c][2,1]oxaboroles
;
_journal_issue                   1
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              144
_journal_paper_doi               10.1039/b611195e
_journal_volume                  31
_journal_year                    2007
_chemical_formula_moiety         'C7 H6 B F O3'
_chemical_formula_sum            'C7 H6 B F O3'
_chemical_formula_weight         167.93
_chemical_name_common            '3-Fluoro-2-formyl-phenylboronic acid'
_chemical_name_systematic
;
3-Fluoro-2-formyl-phenylboronic acid
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                102.960(10)
_cell_angle_beta                 106.797(10)
_cell_angle_gamma                111.387(9)
_cell_formula_units_Z            2
_cell_length_a                   7.2136(9)
_cell_length_b                   7.6191(8)
_cell_length_c                   8.1010(11)
_cell_measurement_reflns_used    47
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      16.87
_cell_measurement_theta_min      7.40
_cell_volume                     368.76(10)
_computing_cell_refinement       'Siemens P3 software'
_computing_data_collection       'Siemens P3 software'
_computing_data_reduction        'XDISK, Siemens P3 software'
_computing_molecular_graphics
;
ORTEP III (Burnett, Johnson, 1996) & DIAMOND v2.1 (Brandenburg, 1999)
;
_computing_publication_material
;
SHELXL-97 (Sheldrick, 1997) & PLATON99 (Spek, 1999)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector                 'scintillation counter'
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'Siemens P3'
_diffrn_measurement_method       'profile data from \q/2\q 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  0.0116
_diffrn_reflns_av_sigmaI/netI    0.0112
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            1415
_diffrn_reflns_theta_full        25.04
_diffrn_reflns_theta_max         25.04
_diffrn_reflns_theta_min         2.83
_diffrn_standards_decay_%        3.3
_diffrn_standards_interval_count 70
_diffrn_standards_number         2
_exptl_absorpt_coefficient_mu    0.130
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.512
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             172
_exptl_crystal_size_max          0.6
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.180
_refine_diff_density_min         -0.122
_refine_diff_density_rms         0.026
_refine_ls_extinction_coef       0.019(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.066
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     134
_refine_ls_number_reflns         1302
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.066
_refine_ls_R_factor_all          0.0370
_refine_ls_R_factor_gt           0.0327
_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^)+(0.0426P)^2^+0.0738P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0874
_refine_ls_wR_factor_ref         0.0907
_reflns_number_gt                1143
_reflns_number_total             1302
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b611195e.txt
_cod_data_source_block           FH_comp1
_cod_original_cell_volume        368.75(8)
_cod_original_sg_symbol_Hall     -P_1
_cod_database_code               7052072