Sterically hindered ortho-substituted phosphatriptycenes as configurationally stable P-chirogenic triarylphosphines.
Hu, Lei; Mahaut, Damien; Tumanov, Nikolay; Wouters, Johan; Collard, Laurent; Robiette, Raphaël; Berionni, Guillaume; Dalton transactions (Cambridge, England : 2003) 50 (2021) 4772–4777; doi:10.1039/d1dt00816a

data_7706850
_publ_section_title
;
 Sterically hindered ortho-substituted phosphatriptycenes as
 configurationally stable P-chirogenic triarylphosphines.
;
_journal_issue                   14
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              4772
_journal_page_last               4777
_journal_paper_doi               10.1039/d1dt00816a
_journal_volume                  50
_journal_year                    2021
_chemical_formula_moiety         'C18 H9 Br3 Cl3 P'
_chemical_formula_sum            'C18 H9 Br3 Cl3 P'
_chemical_formula_weight         602.27
_chemical_name_common
(2-bromo-3-chlorophenyl)bis(2-bromo-6-chlorophenyl)phosphane
_chemical_name_systematic
(2-bromo-3-chlorophenyl)bis(2-bromo-6-chlorophenyl)phosphane
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2021-02-08 deposited with the CCDC.	2021-03-15 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 94.161(3)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   31.4777(8)
_cell_length_b                   8.5972(2)
_cell_length_c                   14.8825(4)
_cell_measurement_reflns_used    3786
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      62.4940
_cell_measurement_theta_min      4.2320
_cell_volume                     4016.89(18)
_computing_cell_refinement       'CrysAlisPro 1.171.40.16b (Rigaku OD, 2018)'
_computing_data_collection       'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_data_reduction        'CrysAlisPro 1.171.40.16b (Rigaku OD, 2018)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      295(2)
_diffrn_detector_area_resol_mean 5.1856
_diffrn_measured_fraction_theta_full 0.975
_diffrn_measured_fraction_theta_max 0.975
_diffrn_measurement_device_type
;
Oxford Diffraction Xcalibur, Ruby, Gemini Ultra
;
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  'multilayer mirror'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0336
_diffrn_reflns_av_unetI/netI     0.0455
_diffrn_reflns_Laue_measured_fraction_full 0.975
_diffrn_reflns_Laue_measured_fraction_max 0.975
_diffrn_reflns_limit_h_max       36
_diffrn_reflns_limit_h_min       -29
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            12995
_diffrn_reflns_point_group_measured_fraction_full 0.975
_diffrn_reflns_point_group_measured_fraction_max 0.975
_diffrn_reflns_theta_full        62.620
_diffrn_reflns_theta_max         62.620
_diffrn_reflns_theta_min         2.815
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    11.875
_exptl_absorpt_correction_T_max  0.863
_exptl_absorpt_correction_T_min  0.373
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.40.53 (Rigaku Oxford Diffraction, 2019)
Analytical numeric absorption correction using a multifaceted crystal
model based on expressions derived by R.C. Clark & J.S. Reid.
(Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.992
_exptl_crystal_description       plate
_exptl_crystal_F_000             2304
_exptl_crystal_size_max          0.110
_exptl_crystal_size_mid          0.090
_exptl_crystal_size_min          0.012
_refine_diff_density_max         0.965
_refine_diff_density_min         -0.793
_refine_diff_density_rms         0.080
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.060
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     527
_refine_ls_number_reflns         6263
_refine_ls_number_restraints     84
_refine_ls_restrained_S_all      1.084
_refine_ls_R_factor_all          0.0609
_refine_ls_R_factor_gt           0.0431
_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^)+(0.0392P)^2^+3.6151P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0939
_refine_ls_wR_factor_ref         0.1032
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4873
_reflns_number_total             6263
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1dt00816a2.cif
_cod_data_source_block           nt0401_LH139
_cod_depositor_comments
'Adding full bibliography for 7706848--7706861.cif.'
_cod_original_cell_volume        4016.89(19)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7706850
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.355
_shelx_estimated_absorpt_t_max   0.871
_shelx_res_checksum              94932
_shelx_hkl_checksum              40364