Fluorine as a robust balancer for tuning the reactivity of topo-photoreactions of chalcones and the photomechanical effects of molecular crystals
Shu, Yuanhong; Ye, Kaiqi; Yue, Yuan; Sun, Jingbo; Wang, Haoran; Zhong, Jiangbin; Yang, Xiqiao; Gao, Hongqiang; Lu, Ran; CrystEngComm 23 (2021) 5856–5868; doi:10.1039/D1CE00086A

data_7242548
_publ_section_title
;
 Fluorine as a robust balancer for tuning the reactivity of
 topo-photoreactions of chalcones and the photomechanical effects of
 molecular crystals
;
_journal_issue                   34
_journal_name_full               CrystEngComm
_journal_page_first              5856
_journal_page_last               5868
_journal_paper_doi               10.1039/D1CE00086A
_journal_volume                  23
_journal_year                    2021
_chemical_formula_moiety         'C15 H10 Br F O'
_chemical_formula_sum            'C15 H10 Br F O'
_chemical_formula_weight         305.14
_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
_atom_sites_solution_primary     direct
_audit_creation_date             2019-11-18
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2019-12-30 deposited with the CCDC.	2021-03-26 downloaded from the CCDC.
;
_cell_angle_alpha                90.767(5)
_cell_angle_beta                 97.082(4)
_cell_angle_gamma                92.597(4)
_cell_formula_units_Z            2
_cell_length_a                   5.8739(7)
_cell_length_b                   7.4217(9)
_cell_length_c                   14.0384(18)
_cell_measurement_reflns_used    9903
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.481
_cell_measurement_theta_min      2.925
_cell_volume                     606.59(13)
_computing_cell_refinement       'SAINT V8.38A (?, 2016)'
_computing_data_reduction        'SAINT V8.38A (?, 2016)'
_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    'XS (Sheldrick, 2008)'
_diffrn_ambient_temperature      100.01
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.994
_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  0.0342
_diffrn_reflns_av_unetI/netI     0.0319
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            11507
_diffrn_reflns_point_group_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.994
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.480
_diffrn_reflns_theta_min         2.925
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    3.384
_exptl_absorpt_correction_T_max  1
_exptl_absorpt_correction_T_min  0.1
_exptl_absorpt_correction_type   analytical
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.671
_exptl_crystal_description       plate
_exptl_crystal_F_000             304
_exptl_crystal_size_max          0.31
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.711
_refine_diff_density_min         -0.909
_refine_diff_density_rms         0.101
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.060
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     163
_refine_ls_number_reflns         2776
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.060
_refine_ls_R_factor_all          0.0330
_refine_ls_R_factor_gt           0.0317
_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^)+(0.0482P)^2^+0.8526P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0876
_refine_ls_wR_factor_ref         0.0886
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2676
_reflns_number_total             2776
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1ce00086a31.cif
_cod_data_source_block           1FChBr-3
_cod_depositor_comments
'Adding full bibliography for 7242537--7242549.cif.'
_cod_database_code               7242548
_shelx_shelxl_version_number     2014/7
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C5(H5), C6(H6), C9(H9), C10(H10), C11(H11), C12(H12),
 C13(H13), C15(H15)
;
_olex2_submission_special_instructions 'No special instructions were received'