Diol-substituted boron complexes of dipyrrolyl diketones as anion receptors and covalently linked 'pivotal' dimers.
Maeda, Hiromitsu; Fujii, Yasunobu; Mihashi, Yuta; Chemical communications (Cambridge, England)  (2008) 4285–4287; doi:10.1039/b806361c

data_7103346
_publ_section_title
;
 Diol-substituted boron complexes of dipyrrolyl diketones as anion
 receptors and covalently linked 'pivotal' dimers.
;
_journal_issue                   36
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              4285
_journal_page_last               4287
_journal_paper_doi               10.1039/b806361c
_journal_year                    2008
_chemical_formula_moiety         'C25 H37 B N2 O4'
_chemical_formula_sum            'C25 H37 B N2 O4'
_chemical_formula_weight         440.38
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_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                 95.864(9)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   12.663(3)
_cell_length_b                   14.346(4)
_cell_length_c                   27.938(6)
_cell_measurement_reflns_used    30772
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      3.2
_cell_volume                     5049(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      123(2)
_diffrn_detector_area_resol_mean 10.00
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Rigaku RAXIS-RAPID'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0584
_diffrn_reflns_av_sigmaI/netI    0.0522
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -36
_diffrn_reflns_number            47101
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         3.19
_exptl_absorpt_coefficient_mu    0.077
_exptl_absorpt_correction_T_max  0.9923
_exptl_absorpt_correction_T_min  0.9625
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.159
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1904
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.623
_refine_diff_density_min         -0.361
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.030
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     604
_refine_ls_number_reflns         11492
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_all          0.0880
_refine_ls_R_factor_gt           0.0530
_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^)+(0.0629P)^2^+1.4296P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1232
_refine_ls_wR_factor_ref         0.1393
_reflns_number_gt                7778
_reflns_number_total             11492
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b806361c.txt
_cod_data_source_block           70111mae
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7103346