Side Chain Regioisomers that Dictate Optical Properties and Mechanofluorochromism through Crystal Packing
Sharber, Seth A.; Thomas, Samuel W.; Chemistry of Materials  (2020) –; doi:10.1021/acs.chemmater.0c01676

data_4003594
_publ_section_title
;
 Side Chain Regioisomers that Dictate Optical Properties and
 Mechanofluorochromism through Crystal Packing
;
_journal_name_full               'Chemistry of Materials'
_journal_paper_doi               10.1021/acs.chemmater.0c01676
_journal_year                    2020
_chemical_formula_sum            'C42 H28 F8 N2 O4'
_chemical_formula_weight         776.66
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2017-08-25 # Formatted by publCIF

;
_cell_angle_alpha                60.589(2)
_cell_angle_beta                 77.321(3)
_cell_angle_gamma                81.330(2)
_cell_formula_units_Z            2
_cell_length_a                   7.5445(10)
_cell_length_b                   16.744(2)
_cell_length_c                   16.820(2)
_cell_measurement_reflns_used    9949
_cell_measurement_temperature    278(2)
_cell_measurement_theta_max      22.01
_cell_measurement_theta_min      2.41
_cell_volume                     1803.5(4)
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      278(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_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  0.0253
_diffrn_reflns_av_unetI/netI     0.0188
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            20104
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        22.062
_diffrn_reflns_theta_max         22.062
_diffrn_reflns_theta_min         1.398
_exptl_absorpt_coefficient_mu    0.120
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2009)'
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.430
_exptl_crystal_description       Prism
_exptl_crystal_F_000             796
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_exptl_transmission_factor_max   0.7447
_exptl_transmission_factor_min   0.6798
_refine_diff_density_max         0.497
_refine_diff_density_min         -0.353
_refine_diff_density_rms         0.059
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.019
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     506
_refine_ls_number_reflns         4423
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.019
_refine_ls_R_factor_all          0.0842
_refine_ls_R_factor_gt           0.0716
_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^)+(0.1374P)^2^+1.4684P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2041
_refine_ls_wR_factor_ref         0.2265
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3667
_reflns_number_total             4423
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            cm0c01676_si_009.cif
_cod_data_source_block           SS170823_1_0m_a
_cod_database_code               4003594
_shelx_shelxl_version_number     2014/7
_shelx_res_checksum              3711
_shelx_hkl_checksum              91966