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_4022896
_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 H20 B N3 O8'
_chemical_formula_weight         441.20
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_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                79.652(4)
_cell_angle_beta                 79.306(4)
_cell_angle_gamma                79.706(4)
_cell_formula_units_Z            2
_cell_length_a                   7.0791(15)
_cell_length_b                   8.5022(19)
_cell_length_c                   18.497(4)
_cell_measurement_reflns_used    3035
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      24.83
_cell_measurement_theta_min      1.99
_cell_volume                     1064.0(4)
_computing_cell_refinement       Saint
_computing_data_collection       Smart
_computing_data_reduction        Saint
_computing_molecular_graphics    XP
_computing_publication_material  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 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'Bruker Smart CCD 1k'
_diffrn_measurement_method       '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  0.0354
_diffrn_reflns_av_sigmaI/netI    0.0425
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            9009
_diffrn_reflns_theta_full        26.43
_diffrn_reflns_theta_max         26.43
_diffrn_reflns_theta_min         2.27
_exptl_absorpt_coefficient_mu    0.107
_exptl_absorpt_correction_T_max  0.99999
_exptl_absorpt_correction_T_min  0.72160
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.377
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             460
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.302
_refine_diff_density_min         -0.218
_refine_diff_density_rms         0.047
_refine_ls_extinction_coef       0.059(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   1.067
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     346
_refine_ls_number_reflns         4331
_refine_ls_number_restraints     177
_refine_ls_restrained_S_all      1.071
_refine_ls_R_factor_all          0.1059
_refine_ls_R_factor_gt           0.0597
_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^)+(0.1044P)^2^+0.1050P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1612
_refine_ls_wR_factor_ref         0.1959
_reflns_number_gt                2503
_reflns_number_total             4331
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo070084vsi20070115_115420.cif
_cod_data_source_block           spa12xpr
_cod_database_code               4022896