Enantiodivergent Formation of C-P Bonds: Synthesis of P-Chiral Phosphines and Methyl-phosphonate Oligonucleotides.
Xu, Dongmin; Rivas-Bascón, Nazaret; M Padial, Natalia; Knouse, Kyle W.; Zheng, Bin; Vantourout, Julien C.; Schmidt, Michael A.; Eastgate, Martin D.; Baran, Phil S.; Journal of the American Chemical Society  (2020) –; doi:10.1021/jacs.9b13898

data_4134418
_publ_section_title
;
 Enantiodivergent Formation of C-P Bonds: Synthesis of P-Chiral Phosphines
 and Methyl-phosphonate Oligonucleotides.
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_paper_doi               10.1021/jacs.9b13898
_journal_year                    2020
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C16 H21 O P S2'
_chemical_formula_sum            'C16 H21 O P S2'
_chemical_formula_weight         324.42
_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
_audit_creation_date             2019-10-25
_audit_creation_method
;
Olex2 1.2-beta
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.50020(10)
_cell_length_b                   10.57590(10)
_cell_length_c                   15.1419(2)
_cell_measurement_reflns_used    9919
_cell_measurement_temperature    100.0
_cell_measurement_theta_max      71.101
_cell_measurement_theta_min      5.101
_cell_volume                     1681.49(3)
_computing_cell_refinement       'SAINT v8.38A (Bruker, 2017)'
_computing_data_collection       'APEX3 v2017.3-0 (Bruker, 2017)'
_computing_data_reduction        'SAINT v8.38A (Bruker, 2017)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      100.0
_diffrn_detector                 'Bruker APEX-II CCD'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CCD Area Detector'
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device       'Fixed Chi Three-Circle Diffractometer'
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'Double Bounce Multilayer Mirrors'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0232
_diffrn_reflns_av_unetI/netI     0.0159
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            14357
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.992
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         71.088
_diffrn_reflns_theta_min         5.101
_diffrn_source                   'Micro Focus Rotating Anode'
_diffrn_source_type              'Rigaku MicroMax-007HF'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    3.705
_exptl_absorpt_correction_T_max  0.7534
_exptl_absorpt_correction_T_min  0.5643
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.0798 before and 0.0307 after correction. The Ratio of minimum to maximum transmission is 0.7490. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.281
_exptl_crystal_description       block
_exptl_crystal_F_000             688
_exptl_crystal_size_max          0.33
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.302
_refine_diff_density_min         -0.218
_refine_diff_density_rms         0.043
_refine_ls_abs_structure_details
;
 Flack x determined using 1345 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.007(5)
_refine_ls_extinction_coef       0.00037(13)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2016/6 (Sheldrick 2016)'
_refine_ls_goodness_of_fit_ref   1.073
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     184
_refine_ls_number_reflns         3224
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.073
_refine_ls_R_factor_all          0.0200
_refine_ls_R_factor_gt           0.0199
_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^)+(0.0328P)^2^+0.3523P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0531
_refine_ls_wR_factor_ref         0.0532
_reflns_Friedel_coverage         0.730
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.983
_reflns_number_gt                3203
_reflns_number_total             3224
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja9b13898_si_004.cif
_cod_data_source_block           baran746
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_diffrn_radiation_probe' value 'X-ray' was changed to
'x-ray' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 7556 2019-12-06 15:28:31Z antanas 
;
_cod_database_code               4134418
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_max   0.732
_shelx_estimated_absorpt_t_min   0.374
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C8(H8), C10(H10)
2.b Secondary CH2 refined with riding coordinates:
 C9(H9A,H9B), C11(H11A,H11B), C12(H12A,H12B)
2.c Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C4(H4), C5(H5), C6(H6)
2.d X=CH2 refined with riding coordinates:
 C15(H15A,H15B)
2.e Idealised Me refined as rotating group:
 C13(H13A,H13B,H13C), C16(H16A,H16B,H16C)
;
_shelx_res_checksum              84626
_shelx_hkl_checksum              60275
_olex2_submission_special_instructions 'No special instructions were received'