Synthesis and characterisation of the complete series of B-N analogues of triptycene.
Seven, Omer; Popp, Sebastian; Bolte, Michael; Lerner, Hans-Wolfram; Wagner, Matthias; Dalton transactions (Cambridge, England : 2003) 43 (2014) 8241–8253; doi:10.1039/c4dt00442f

data_7030918
_publ_section_title
;
 Synthesis and characterisation of the complete series of B-N analogues of
 triptycene.
;
_journal_issue                   22
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              8241
_journal_page_last               8253
_journal_paper_doi               10.1039/c4dt00442f
_journal_volume                  43
_journal_year                    2014
_chemical_formula_moiety         'C28 H44 B2 N4'
_chemical_formula_sum            'C28 H44 B2 N4'
_chemical_formula_weight         458.29
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2013
_cell_angle_alpha                90
_cell_angle_beta                 99.567(5)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.6013(7)
_cell_length_b                   9.5489(6)
_cell_length_c                   28.2614(17)
_cell_measurement_reflns_used    11232
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      25.9
_cell_measurement_theta_min      2.0
_cell_volume                     2821.1(3)
_computing_cell_refinement       'X-Area (Stoe & Cie, 2001)'
_computing_data_collection       'X-Area (Stoe & Cie, 2001)'
_computing_data_reduction        'X-Area (Stoe & Cie, 2001)'
_computing_molecular_graphics    'XP in SHELXTL-Plus (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'STOE IPDS II two-circle-diffractometer'
_diffrn_measurement_method       \w
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0888
_diffrn_reflns_av_unetI/netI     0.0860
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.988
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -34
_diffrn_reflns_number            20700
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.988
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         25.478
_diffrn_reflns_theta_min         1.964
_exptl_absorpt_coefficient_mu    0.063
_exptl_absorpt_correction_T_max  0.996
_exptl_absorpt_correction_T_min  0.989
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'X-Area (Stoe & Cie, 2001)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.079
_exptl_crystal_description       plate
_exptl_crystal_F_000             1000
_exptl_crystal_size_max          0.180
_exptl_crystal_size_mid          0.130
_exptl_crystal_size_min          0.070
_refine_diff_density_max         0.209
_refine_diff_density_min         -0.218
_refine_diff_density_rms         0.036
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.923
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     313
_refine_ls_number_reflns         5184
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.923
_refine_ls_R_factor_all          0.0990
_refine_ls_R_factor_gt           0.0518
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0515P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1036
_refine_ls_wR_factor_ref         0.1171
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3166
_reflns_number_total             5184
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c4dt00442f2.cif
_cod_data_source_block           wa1689
_cod_database_code               7030918
_shelx_estimated_absorpt_t_min   0.989
_shelx_estimated_absorpt_t_max   0.996
_shelxl_version_number           2013-3
_shelx_res_checksum              4732