Synthesis, Characterization, and Fluorescence Behavior of Twisted and Planar B~2~N~2~-Quaterphenyl Analogues
Cory A. Jaska; Warren E. Piers; Robert McDonald; Masood Parvez; Journal of Organic Chemistry 72 (2007) 5234–5243; doi:10.1021/jo0706574

data_4023999
_publ_section_title
;
 Synthesis, Characterization, and Fluorescence Behavior of
 Twisted and Planar B~2~N~2~-Quaterphenyl Analogues
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              5234
_journal_page_last               5243
_journal_paper_doi               10.1021/jo0706574
_journal_volume                  72
_journal_year                    2007
_chemical_formula_moiety         'C26 H30 B2 N2, 0.5(C H2 Cl2)'
_chemical_formula_sum            'C26.5 H31 B2 Cl N2'
_chemical_formula_weight         434.60
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 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                 109.3086(19)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   25.589(3)
_cell_length_b                   7.6701(8)
_cell_length_c                   25.394(3)
_cell_measurement_reflns_used    2657
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      25.84
_cell_measurement_theta_min      2.76
_cell_volume                     4703.7(9)
_computing_cell_refinement       'Bruker SAINT (Bruker, 1997)'
_computing_data_collection       'Bruker SMART (Bruker, 1997)'
_computing_data_reduction        'Bruker SAINT (Bruker, 1997)'
_computing_molecular_graphics    'Bruker SHELXTL (Bruker, 1997)'
_computing_publication_material  'Bruker SHELXTL (Bruker, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      193(2)
_diffrn_detector_area_resol_mean 8.192
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type
'Bruker PLATFORM diffractometer/SMART 1000 CCD area detector'
_diffrn_measurement_method       '\w 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  0.0783
_diffrn_reflns_av_sigmaI/netI    0.0689
_diffrn_reflns_limit_h_max       31
_diffrn_reflns_limit_h_min       -31
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            17182
_diffrn_reflns_theta_full        26.41
_diffrn_reflns_theta_max         26.41
_diffrn_reflns_theta_min         1.69
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.179
_exptl_absorpt_correction_T_max  0.9893
_exptl_absorpt_correction_T_min  0.8954
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.227
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1848
_exptl_crystal_size_max          0.63
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.887
_refine_diff_density_min         -0.887
_refine_diff_density_rms         0.062
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     285
_refine_ls_number_reflns         4823
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.036
_refine_ls_R_factor_all          0.1358
_refine_ls_R_factor_gt           0.0723
_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^)+(0.0964P)^2^+6.6962P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1789
_refine_ls_wR_factor_ref         0.2148
_reflns_number_gt                2748
_reflns_number_total             4823
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            jo0706574si20070330_124555.cif
_cod_data_source_block           cal0509
_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 
;
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_original_formula_sum        'C26.50 H31 B2 Cl N2'
_cod_database_code               4023999