A chiral phosphazane reagent strategy for the determination of enantiomeric excess of amines
Peel, Andrew J.; Terzopoulos, Alexandros; Jethwa, Rajesh B.; Choudhury, Dipanjana; Niu, Hao-Che; Bond, Andrew D.; Slaughter, Jonathan; Wright, Dominic S.; Chemical Science  (2022) –; doi:10.1039/D2SC01692C

data_1566872
_publ_section_title
;
 A chiral phosphazane reagent strategy for the determination of
 enantiomeric excess of amines
;
_journal_name_full               'Chemical Science'
_journal_paper_doi               10.1039/D2SC01692C
_journal_year                    2022
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C27 H54 N3 O P2 +, I -'
_chemical_formula_sum            'C27 H54 I N3 O P2'
_chemical_formula_weight         625.57
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2019/1
_audit_update_record
;
2022-03-11 deposited with the CCDC.	2022-04-12 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 98.955(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.6161(6)
_cell_length_b                   35.768(2)
_cell_length_c                   9.7814(6)
_cell_measurement_reflns_used    9716
_cell_measurement_temperature    180(2)
_cell_measurement_theta_max      66.52
_cell_measurement_theta_min      4.74
_cell_volume                     3323.3(3)
_computing_cell_refinement       'SAINT (Bruker, 2016)'
_computing_data_collection       'APEX3 (Bruker, 2016)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'Mercury (Macrae et al., 2008)'
_computing_publication_material  SHELXL
_computing_structure_refinement  'SHELXL (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      180(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker D8-QUEST PHOTON-III'
_diffrn_measurement_method       '\w and \f-scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0367
_diffrn_reflns_av_unetI/netI     0.0280
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       42
_diffrn_reflns_limit_k_min       -42
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            55121
_diffrn_reflns_point_group_measured_fraction_full 0.989
_diffrn_reflns_point_group_measured_fraction_max 0.989
_diffrn_reflns_theta_full        66.519
_diffrn_reflns_theta_max         66.519
_diffrn_reflns_theta_min         2.470
_diffrn_source                   'Incoatec I\mS Cu microsource'
_exptl_absorpt_coefficient_mu    8.635
_exptl_absorpt_correction_T_max  0.7528
_exptl_absorpt_correction_T_min  0.3484
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker, 2014)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.250
_exptl_crystal_description       plate
_exptl_crystal_F_000             1312
_exptl_crystal_size_max          0.350
_exptl_crystal_size_mid          0.280
_exptl_crystal_size_min          0.060
_refine_diff_density_max         0.629
_refine_diff_density_min         -0.684
_refine_diff_density_rms         0.063
_refine_ls_abs_structure_details
;
Flack x determined using 5385 quotients [(I+)-(I-)]/[(I+)+(I-)]
(Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.007(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.037
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     714
_refine_ls_number_reflns         11587
_refine_ls_number_restraints     109
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_all          0.0336
_refine_ls_R_factor_gt           0.0330
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0546P)^2^+1.7808P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0908
_refine_ls_wR_factor_ref         0.0917
_reflns_Friedel_coverage         0.947
_reflns_Friedel_fraction_full    0.979
_reflns_Friedel_fraction_max     0.979
_reflns_number_gt                11413
_reflns_number_total             11587
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2sc01692c3.cif
_cod_data_source_block           10R
_cod_original_cell_volume        3323.3(4)
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               1566872
_cambridge_user_name             'Alexandros Terzopoulos'
_cambridge_user_crsid            at844
_cambridge_supervisor_name       'Dominic Wright'
_cambridge_supervisor_crsid      dsw1000
_cambridge_crystallographer_name 'Andrew Bond'
_cambridge_crystallographer_crsid adb29
_cambridge_sample_id             AT020_crop2
_cambridge_data_id               DW_B2_0365
_shelx_estimated_absorpt_t_min   0.152
_shelx_estimated_absorpt_t_max   0.625
_shelx_res_checksum              43292
_shelx_hkl_checksum              82974