Diarylmaleic anhydrides: unusual organic luminescence, multi-stimuli response and photochromism
Mei, Xiaofei; Wang, Jingwei; Zhou, Zhonggao; Wu, Shiyi; Huang, Limei; Lin, Zhenghuan; Ling, Qidan; Journal of Materials Chemistry C 5 (2017) 2135–; doi:10.1039/C6TC05519B

data_7236464
_publ_section_title
;
 Diarylmaleic anhydrides: unusual organic luminescence, multi-stimuli
 response and photochromism
;
_journal_issue                   8
_journal_name_full               'Journal of Materials Chemistry C'
_journal_page_first              2135
_journal_paper_doi               10.1039/C6TC05519B
_journal_volume                  5
_journal_year                    2017
_chemical_formula_moiety         'C16 H10 O3'
_chemical_formula_sum            'C16 H10 O3'
_chemical_formula_weight         250.24
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2016-11-19 deposited with the CCDC.
2017-01-24 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 101.601(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.2208(4)
_cell_length_b                   5.94826(19)
_cell_length_c                   13.8485(4)
_cell_measurement_reflns_used    2353
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      74.0750
_cell_measurement_theta_min      3.9170
_cell_volume                     1228.19(6)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.966
_diffrn_measured_fraction_theta_max 0.966
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0154
_diffrn_reflns_av_sigmaI/netI    0.0205
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            4627
_diffrn_reflns_theta_full        73.98
_diffrn_reflns_theta_max         73.98
_diffrn_reflns_theta_min         5.94
_exptl_absorpt_coefficient_mu    0.768
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.75627
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_density_diffrn    1.353
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             520
_refine_diff_density_max         0.187
_refine_diff_density_min         -0.332
_refine_diff_density_rms         0.085
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.102
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     172
_refine_ls_number_reflns         2412
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.102
_refine_ls_R_factor_all          0.0595
_refine_ls_R_factor_gt           0.0505
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0717P)^2^+0.0519P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1179
_refine_ls_wR_factor_ref         0.1278
_reflns_number_gt                1943
_reflns_number_total             2412
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c6tc05519b2.cif
_cod_data_source_block           bpma
_cod_database_code               7236464