Polymorphism and phase transformation tuned luminescence and mechanistic insights in nonconventional luminophores
Li, Anze; Zhao, Zihao; Yang, Guangxin; Zhang, Qiang; Chen, Xiang; Yuan, Wang Zhang; Chemical Science 16 (2025) 11530–11538; doi:10.1039/D5SC02250A

data_1574683
_publ_section_title
;
 Polymorphism and phase transformation tuned luminescence and mechanistic
 insights in nonconventional luminophores
;
_journal_issue                   25
_journal_name_full               'Chemical Science'
_journal_page_first              11530
_journal_page_last               11538
_journal_paper_doi               10.1039/D5SC02250A
_journal_volume                  16
_journal_year                    2025
_chemical_formula_moiety         'C14 H34 N2, 2(Br), 2(H2 O)'
_chemical_formula_sum            'C14 H38 Br2 N2 O2'
_chemical_formula_weight         426.28
_chemical_name_systematic        8-Br-a
_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   mixed
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2025-02-12 deposited with the CCDC.	2025-05-20 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 103.377(3)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   7.9725(3)
_cell_length_b                   10.1116(2)
_cell_length_c                   12.9668(3)
_cell_measurement_reflns_used    14193
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      75.9300
_cell_measurement_theta_min      5.5890
_cell_volume                     1016.95(5)
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device_type  'ROD, Synergy Custom DW system, HyPix-Arc 150'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0196
_diffrn_reflns_av_unetI/netI     0.0106
_diffrn_reflns_Laue_measured_fraction_full 0.993
_diffrn_reflns_Laue_measured_fraction_max 0.981
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            18915
_diffrn_reflns_point_group_measured_fraction_full 0.993
_diffrn_reflns_point_group_measured_fraction_max 0.981
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         76.108
_diffrn_reflns_theta_min         5.607
_exptl_absorpt_coefficient_mu    5.081
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.76284
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.43.112a (Rigaku Oxford Diffraction, 2024)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourles
_exptl_crystal_density_diffrn    1.392
_exptl_crystal_description       block
_exptl_crystal_F_000             444
_exptl_crystal_size_max          0.160
_exptl_crystal_size_mid          0.140
_exptl_crystal_size_min          0.120
_refine_diff_density_max         0.376
_refine_diff_density_min         -0.234
_refine_diff_density_rms         0.045
_refine_ls_extinction_coef       0.00121(11)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018/3 (Sheldrick 2018)'
_refine_ls_goodness_of_fit_ref   1.024
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     101
_refine_ls_number_reflns         2087
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.025
_refine_ls_R_factor_all          0.0166
_refine_ls_R_factor_gt           0.0160
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0213P)^2^+0.5190P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0420
_refine_ls_wR_factor_ref         0.0423
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2022
_reflns_number_total             2087
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5sc02250a2.cif
_cod_data_source_block           t_CCDC1
_cod_depositor_comments
'Adding full bibliography for 1574679--1574685.cif.'
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               1574683
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.497
_shelx_estimated_absorpt_t_max   0.581
_shelx_res_checksum              63249