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_1566856
_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 H52 N2 O2 P2'
_chemical_formula_sum            'C28 H52 N2 O2 P2'
_chemical_formula_weight         510.65
_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   geom
_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                   9.9457(2)
_cell_length_b                   13.5082(3)
_cell_length_c                   22.3174(6)
_cell_measurement_reflns_used    120458
_cell_measurement_temperature    180(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      1.00
_cell_volume                     2998.31(12)
_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 0.993
_diffrn_measured_fraction_theta_max 0.984
_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  0.0499
_diffrn_reflns_av_unetI/netI     0.0617
_diffrn_reflns_Laue_measured_fraction_full 0.993
_diffrn_reflns_Laue_measured_fraction_max 0.984
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            24851
_diffrn_reflns_point_group_measured_fraction_full 0.984
_diffrn_reflns_point_group_measured_fraction_max 0.960
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.472
_diffrn_reflns_theta_min         3.526
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.171
_exptl_absorpt_correction_T_max  0.946
_exptl_absorpt_correction_T_min  0.716
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SORTAV (Blessing, 1995)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.131
_exptl_crystal_description       block
_exptl_crystal_F_000             1120
_exptl_crystal_size_max          0.440
_exptl_crystal_size_mid          0.440
_exptl_crystal_size_min          0.440
_refine_diff_density_max         0.272
_refine_diff_density_min         -0.218
_refine_diff_density_rms         0.035
_refine_ls_abs_structure_details
;
Flack x determined using 1618 quotients [(I+)-(I-)]/[(I+)+(I-)]
(Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.01(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.954
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     319
_refine_ls_number_reflns         6596
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.954
_refine_ls_R_factor_all          0.0620
_refine_ls_R_factor_gt           0.0379
_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^)+(0.0449P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0799
_refine_ls_wR_factor_ref         0.0837
_reflns_Friedel_coverage         0.739
_reflns_Friedel_fraction_full    0.972
_reflns_Friedel_fraction_max     0.929
_reflns_number_gt                4541
_reflns_number_total             6596
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2sc01692c3.cif
_cod_data_source_block           2
_cod_database_code               1566856
_cambridge_user_name             'Andrew Peel'
_cambridge_user_crsid            ajp208
_cambridge_supervisor_name       'Dominic Wright'
_cambridge_supervisor_crsid      dsw1000
_cambridge_crystallographer_name 'Andrew Peel'
_cambridge_crystallographer_crsid ajp208
_cambridge_sample_id             AJP527A
_cambridge_data_id               DW_K1_0060
_shelx_estimated_absorpt_t_min   0.929
_shelx_estimated_absorpt_t_max   0.929
_shelx_res_checksum              21533
_shelx_hkl_checksum              38467