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_1566854
_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         'C28 H50 N3 O P2 +, I -'
_chemical_formula_sum            'C28 H50 I N3 O P2'
_chemical_formula_weight         633.55
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2021-08-26 deposited with the CCDC.	2022-04-12 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.2847(2)
_cell_length_b                   16.6693(3)
_cell_length_c                   16.9948(3)
_cell_measurement_reflns_used    16070
_cell_measurement_temperature    180(2)
_cell_measurement_theta_max      26.02
_cell_measurement_theta_min      1.00
_cell_volume                     3196.86(10)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 1999)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor, 1997)'
_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 0.996
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '\w and \f-scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0528
_diffrn_reflns_av_unetI/netI     0.0449
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.992
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            26953
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.986
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.022
_diffrn_reflns_theta_min         3.611
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    1.125
_exptl_absorpt_correction_T_max  0.937
_exptl_absorpt_correction_T_min  0.839
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SORTAV (Blessing, 1995)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.316
_exptl_crystal_description       block
_exptl_crystal_F_000             1320
_exptl_crystal_size_max          0.250
_exptl_crystal_size_mid          0.060
_exptl_crystal_size_min          0.060
_refine_diff_density_max         0.257
_refine_diff_density_min         -0.585
_refine_diff_density_rms         0.071
_refine_ls_abs_structure_details
;
Flack x determined using 1974 quotients [(I+)-(I-)]/[(I+)+(I-)]
(Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.025(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.049
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     331
_refine_ls_number_reflns         6213
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.049
_refine_ls_R_factor_all          0.0478
_refine_ls_R_factor_gt           0.0338
_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^)+(0.0294P)^2^+0.7873P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0650
_refine_ls_wR_factor_ref         0.0691
_reflns_Friedel_coverage         0.773
_reflns_Friedel_fraction_full    0.998
_reflns_Friedel_fraction_max     0.978
_reflns_number_gt                5243
_reflns_number_total             6213
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2sc01692c3.cif
_cod_data_source_block           6R
_cod_database_code               1566854
_cambridge_user_name             'Andrew Peel'
_cambridge_user_crsid            ajp208
_cambridge_supervisor_name       'Dominic Wright'
_cambridge_supervisor_crsid      dsw1000
_cambridge_crystallographer_name 'Andrew Bond'
_cambridge_crystallographer_crsid adb29
_cambridge_sample_id             AJP549A
_cambridge_data_id               DW_K3_0082
_shelx_estimated_absorpt_t_min   0.766
_shelx_estimated_absorpt_t_max   0.936
_shelx_res_checksum              12529
_shelx_hkl_checksum              69066