Nitro-Substituted Stilbeneboronate Pinacol Esters and Their Fluoro-Adducts. Fluoride Ion Induced Polarity Enhancement of Arylboronate Esters
Alexander Oehlke; Alexander A. Auer; Ina Jahre; Bernhard Walfort; Tobias Rüffer; Petra Zoufalá; Heinrich Lang; Stefan Spange; Journal of Organic Chemistry 72 (2007) 4328–4339; doi:10.1021/jo070084v

data_4022898
_publ_section_title
;
 Nitro-Substituted Stilbeneboronate Pinacol Esters and Their
 Fluoro-Adducts. Fluoride Ion Induced Polarity Enhancement of
 Arylboronate Esters
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              4328
_journal_page_last               4339
_journal_paper_doi               10.1021/jo070084v
_journal_volume                  72
_journal_year                    2007
_chemical_formula_sum            'C20 H23 B O2'
_chemical_formula_weight         306.19
_space_group_IT_number           86
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-P 4bc'
_symmetry_space_group_name_H-M   'P 42/n :2'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date
;
'Wed Nov 08 16:01:49 2006'
;
_audit_creation_method
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.30.5 (release 12-06-2006 CrysAlis171 .NET)
(compiled Jun 12 2006,17:01:16)
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            16
_cell_length_a                   33.335(5)
_cell_length_b                   33.343(4)
_cell_length_c                   6.1898(8)
_cell_measurement_reflns_used    12721
_cell_measurement_temperature    100
_cell_measurement_theta_max      60.4000
_cell_measurement_theta_min      3.7210
_cell_volume                     6879.9(16)
_computing_cell_refinement
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.30.5 (release 12-06-2006 CrysAlis171 .NET)
(compiled Jun 12 2006,17:01:16)
;
_computing_data_collection
;
CrysAlis CCD, Oxford Diffraction Ltd.,
Version 1.171.30.5 (release 12-06-2006 CrysAlis171 .NET)
(compiled Jun 12 2006,17:01:16)
;
_computing_data_reduction
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.30.5 (release 12-06-2006 CrysAlis171 .NET)
(compiled Jun 12 2006,17:01:16)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      100
_diffrn_detector_area_resol_mean 16.2879
_diffrn_measured_fraction_theta_full 0.952
_diffrn_measured_fraction_theta_max 0.952
_diffrn_measurement_device_type  'Oxford Gemini S'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0296
_diffrn_reflns_av_sigmaI/netI    0.0277
_diffrn_reflns_limit_h_max       37
_diffrn_reflns_limit_h_min       -37
_diffrn_reflns_limit_k_max       37
_diffrn_reflns_limit_k_min       -37
_diffrn_reflns_limit_l_max       5
_diffrn_reflns_limit_l_min       -6
_diffrn_reflns_number            31981
_diffrn_reflns_theta_full        60.56
_diffrn_reflns_theta_max         60.56
_diffrn_reflns_theta_min         3.75
_exptl_absorpt_coefficient_mu    0.573
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.77046
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.30.5 (release 12-06-2006 CrysAlis171 .NET)
(compiled Jun 12 2006,17:01:16)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.182
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             2624
_exptl_crystal_size_max          0.8
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.451
_refine_diff_density_min         -0.257
_refine_diff_density_rms         0.039
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.051
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     434
_refine_ls_number_reflns         4928
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0596
_refine_ls_R_factor_gt           0.0410
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0614P)^2^+1.6859P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0990
_refine_ls_wR_factor_ref         0.1133
_reflns_number_gt                3666
_reflns_number_total             4928
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo070084vsi20070115_115443.cif
_cod_data_source_block           spang16
_cod_original_sg_symbol_H-M      'P 42/n'
_cod_database_code               4022898