Large Transition State Stabilization from a Weak Hydrogen Bond
Vik, Erik C.; Li, Ping; Maier, Josef M.; Madukwe, Daniel O.; Rassolov, Vitaly A.; Pellechia, Perry J.; Masson, Eric; Shimizu, Ken D.; Chemical Science  (2020) –; doi:10.1039/D0SC02806A

data_1558476
_publ_section_title
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 Large Transition State Stabilization from a Weak Hydrogen Bond
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_journal_name_full               'Chemical Science'
_journal_paper_doi               10.1039/D0SC02806A
_journal_year                    2020
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C17 H14 N2 O3'
_chemical_formula_sum            'C17 H14 N2 O3'
_chemical_formula_weight         294.30
_space_group_crystal_system      orthorhombic
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2017-12-08
_audit_creation_method
;
Olex2 1.2
(compiled 2017.08.10 svn.r3458 for OlexSys, GUI svn.r5381)
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_audit_update_record
;
2020-05-11 deposited with the CCDC.	2020-07-02 downloaded from the CCDC.
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_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   25.6129(11)
_cell_length_b                   7.2650(3)
_cell_length_c                   7.5367(3)
_cell_measurement_reflns_used    9963
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      29.97
_cell_measurement_theta_min      2.91
_cell_volume                     1402.41(10)
_computing_cell_refinement       'SAINT v8.37A (Bruker, 2015)'
_computing_data_collection       'Bruker APEX3 v2016.5-0 (Bruker, 2016)'
_computing_data_reduction        'SAINT v8.37A (Bruker, 2015)'
_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    'XT (Sheldrick, 2015)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'Bruker PHOTON-100 area detector'
_diffrn_detector_area_resol_mean 10.4
_diffrn_detector_type            'CMOS area detector'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker D8 QUEST'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0300
_diffrn_reflns_av_unetI/netI     0.0125
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       36
_diffrn_reflns_limit_h_min       -36
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            73700
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        30.080
_diffrn_reflns_theta_max         30.082
_diffrn_reflns_theta_min         2.914
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_type              'Incoatec I\ms'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.097
_exptl_absorpt_correction_T_max  0.8622
_exptl_absorpt_correction_T_min  0.8419
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
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SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1245 before and 0.0436 after correction.
The Ratio of minimum to maximum transmission is 0.9765.
The \l/2 correction factor is Not present.
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_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.394
_exptl_crystal_description       plate
_exptl_crystal_F_000             616
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.279
_refine_diff_density_min         -0.175
_refine_diff_density_rms         0.038
_refine_ls_abs_structure_details
;
 Flack x determined using 1765 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.11(13)
_refine_ls_extinction_coef       0.011(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2017/1 (Sheldrick 2017)'
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     201
_refine_ls_number_reflns         4118
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.0298
_refine_ls_R_factor_gt           0.0278
_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^)+(0.0472P)^2^+0.2415P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0735
_refine_ls_wR_factor_ref         0.0748
_reflns_Friedel_coverage         0.865
_reflns_Friedel_fraction_full    0.996
_reflns_Friedel_fraction_max     0.995
_reflns_number_gt                3949
_reflns_number_total             4118
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0sc02806a2.cif
_cod_data_source_block           ecv1_129
_cod_database_code               1558476
_shelx_shelxl_version_number     2017/1
_shelx_estimated_absorpt_t_max   0.990
_shelx_estimated_absorpt_t_min   0.966
_olex2_refinement_description
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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:
 C2(H2), C3(H3), C6(H6), C7(H7)
2.b Secondary CH2 refined with riding coordinates:
 C1(H1A,H1B)
2.c Aromatic/amide H refined with riding coordinates:
 C8(H8), C9(H9), C12(H12), C13(H13), C15(H15)
2.d Idealised Me refined as rotating group:
 C16(H16A,H16B,H16C)
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_shelx_res_checksum              41212
_olex2_submission_special_instructions 'No special instructions were received'