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_4003597
_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
_cell_angle_alpha                89.665(2)
_cell_angle_beta                 81.654(2)
_cell_angle_gamma                84.678(2)
_cell_formula_units_Z            1
_cell_length_a                   7.6598(7)
_cell_length_b                   9.1930(9)
_cell_length_c                   12.4157(12)
_cell_measurement_temperature    100(2)
_cell_volume                     861.26(14)
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.998
_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  0.0185
_diffrn_reflns_av_unetI/netI     0.0162
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            14881
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.058
_diffrn_reflns_theta_min         2.699
_exptl_absorpt_coefficient_mu    0.126
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2009)'
_exptl_crystal_colour            yellow-green
_exptl_crystal_density_diffrn    1.497
_exptl_crystal_description       prism
_exptl_crystal_F_000             398
_exptl_crystal_size_max          2.000
_exptl_crystal_size_mid          0.500
_exptl_crystal_size_min          0.500
_exptl_transmission_factor_max   0.9400
_exptl_transmission_factor_min   0.7870
_refine_diff_density_max         0.367
_refine_diff_density_min         -0.169
_refine_diff_density_rms         0.049
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.042
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     255
_refine_ls_number_reflns         3778
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_all          0.0418
_refine_ls_R_factor_gt           0.0358
_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^)+(0.0492P)^2^+0.3935P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0937
_refine_ls_wR_factor_ref         0.0986
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3305
_reflns_number_total             3778
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            cm0c01676_si_007.cif
_cod_data_source_block           070616_0m
_cod_database_code               4003597
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.787
_shelx_estimated_absorpt_t_max   0.940
_shelx_res_checksum              84626
_shelx_hkl_checksum              81704