Fluorescence Switching of Intramolecular Lewis Acid-Base Pairs on a Flexible Backbone.
Cao, Yang; Arsenault, Nicole E.; Hean, Duane; Wolf, Michael O.; The Journal of organic chemistry 84 (2019) 5394–5403; doi:10.1021/acs.joc.9b00398

data_4034333
_publ_section_title
;
 Fluorescence Switching of Intramolecular Lewis Acid-Base Pairs on a
 Flexible Backbone.
;
_journal_issue                   9
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              5394
_journal_page_last               5403
_journal_paper_doi               10.1021/acs.joc.9b00398
_journal_volume                  84
_journal_year                    2019
_chemical_formula_moiety         'C52 H48 B O3 P S2'
_chemical_formula_sum            'C52 H48 B O3 P S2'
_chemical_formula_weight         826.80
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2018-10-01
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_cell_angle_alpha                90
_cell_angle_beta                 110.2080(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   14.5432(5)
_cell_length_b                   21.3618(6)
_cell_length_c                   14.7634(4)
_cell_measurement_reflns_used    9978
_cell_measurement_temperature    100
_cell_measurement_theta_max      26.35
_cell_measurement_theta_min      2.41
_cell_volume                     4304.2(2)
_computing_cell_refinement       'SAINT v8.37A (Bruker, 2015)'
_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  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXS (Sheldrick, 2008)'
_diffrn_ambient_temperature      100
_diffrn_measured_fraction_theta_full 0.973
_diffrn_measured_fraction_theta_max 0.918
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0261
_diffrn_reflns_av_unetI/netI     0.0194
_diffrn_reflns_Laue_measured_fraction_full 0.973
_diffrn_reflns_Laue_measured_fraction_max 0.918
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            53782
_diffrn_reflns_point_group_measured_fraction_full 0.973
_diffrn_reflns_point_group_measured_fraction_max 0.918
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.348
_diffrn_reflns_theta_min         1.944
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.205
_exptl_absorpt_correction_T_max  0.7454
_exptl_absorpt_correction_T_min  0.7129
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2014/5 (Bruker,2014/5) was used for absorption correction.'
_exptl_crystal_colour            orange
_exptl_crystal_colour_primary    orange
_exptl_crystal_density_diffrn    1.276
_exptl_crystal_description       plate
_exptl_crystal_F_000             1744
_exptl_crystal_size_max          0.311
_exptl_crystal_size_mid          0.245
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.412
_refine_diff_density_min         -0.344
_refine_diff_density_rms         0.051
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.034
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     540
_refine_ls_number_reflns         8066
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.034
_refine_ls_R_factor_all          0.0460
_refine_ls_R_factor_gt           0.0390
_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^)+(0.0353P)^2^+4.3918P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0885
_refine_ls_wR_factor_ref         0.0935
_reflns_Friedel_coverage         0.000
_reflns_number_gt                7089
_reflns_number_total             8066
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo9b00398_si_009.cif
_cod_data_source_block           mw290_pp_a
_cod_database_code               4034333
_shelx_shelxl_version_number     2017/1
_shelx_estimated_absorpt_t_max   0.982
_shelx_estimated_absorpt_t_min   0.939
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C2(H2), C7(H7), C11(H11), C13(H13), C20(H20), C22(H22), C28(H28), C29(H29),
 C30(H30), C31(H31), C32(H32), C34(H34), C35(H35), C36(H36), C37(H37), C38(H38),
  C40(H40), C41(H41), C43(H43), C44(H44), C47(H47), C48(H48), C50(H50), C51(H51)
2.b Idealised Me refined as rotating group:
 C15(H15A,H15B,H15C), C16(H16A,H16B,H16C), C17(H17A,H17B,H17C), C24(H24A,H24B,
 H24C), C25(H25A,H25B,H25C), C26(H26A,H26B,H26C), C45(H45A,H45B,H45C), C52(H52A,
 H52B,H52C)
;
_olex2_submission_special_instructions 'No special instructions were received'