Tuning the electronic properties of cyclopentadienyl analogs with CB2N2 frameworks: 1,2-diphenyl-1,2-diaza-3,5-diborolyl ligands and their alkali metal salts
Ly, Hanh V.; Konu, Jari; Parvez, Masood; Roesler, Roland; Dalton Transactions  (2008) 3454–3460; doi:10.1039/b802930j

data_7004126
_publ_section_title
;
 Tuning the electronic properties of cyclopentadienyl analogs with
 CB2N2 frameworks: 1,2-diphenyl-1,2-diaza-3,5-diborolyl ligands and
 their alkali metal salts
;
_journal_issue                   26
_journal_name_full               'Dalton Transactions'
_journal_page_first              3454
_journal_page_last               3460
_journal_paper_doi               10.1039/b802930j
_journal_year                    2008
_chemical_formula_moiety         'C38 H47 B2 N2 Na O3'
_chemical_formula_sum            'C38 H47 B2 N2 Na O3'
_chemical_formula_weight         624.39
_chemical_name_systematic
;
?
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 100.47(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.154(5)
_cell_length_b                   14.153(5)
_cell_length_c                   13.912(7)
_cell_measurement_reflns_used    6923
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.47
_cell_measurement_theta_min      2.98
_cell_volume                     1772.4(15)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Nonius BV, 1997-2000)'
_computing_data_reduction        DENZO-SMN
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'KappaCCD (Nonius, FR540C)'
_diffrn_measurement_method       'phi\omega scans'
_diffrn_radiation_monochromator  'horizonally mounted graphite crystal'
_diffrn_radiation_source         'Enraf Nonius FR590D, fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0471
_diffrn_reflns_av_sigmaI/netI    0.0776
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            6923
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         2.98
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  0.9869
_exptl_absorpt_correction_T_min  0.9804
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.170
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             668
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.269
_refine_diff_density_min         -0.283
_refine_diff_density_rms         0.043
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.4(6)
_refine_ls_extinction_coef       0.032(5)
_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   1.020
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     416
_refine_ls_number_reflns         4189
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.020
_refine_ls_R_factor_all          0.1093
_refine_ls_R_factor_gt           0.0555
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0630P)^2^+0.4000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1180
_refine_ls_wR_factor_ref         0.1440
_reflns_number_gt                2653
_reflns_number_total             4189
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b802930j.txt
_cod_data_source_block           3b
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               7004126