1,8-Naphthalimide-based highly blue-emissive fluorophore induced by a bromine atom: reversible thermochromism and vapochromism characteristics
Chen, Zhao; Wu, Di; Han, Xie; Nie, Yuting; Yin, Jun; Yu, Guang-Ao; Liu, Sheng Hua; RSC Adv. 4 (2014) 63985–; doi:10.1039/C4RA12091D

data_7218899
_publ_section_title
;
 1,8-Naphthalimide-based highly blue-emissive fluorophore induced by a
 bromine atom: reversible thermochromism and vapochromism characteristics
;
_journal_issue                   109
_journal_name_full               'RSC Adv.'
_journal_page_first              63985
_journal_paper_doi               10.1039/C4RA12091D
_journal_volume                  4
_journal_year                    2014
_chemical_formula_sum            'C18 H19 N O2'
_chemical_formula_weight         281.34
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2014-07-16 deposited with the CCDC.
2014-11-24 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 103.266(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.2418(14)
_cell_length_b                   16.336(3)
_cell_length_c                   11.3610(19)
_cell_measurement_reflns_used    5056
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      31.54
_cell_measurement_theta_min      2.22
_cell_volume                     1488.8(4)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0346
_diffrn_reflns_av_sigmaI/netI    0.0274
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            11160
_diffrn_reflns_theta_full        25.99
_diffrn_reflns_theta_max         25.99
_diffrn_reflns_theta_min         2.22
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.082
_exptl_absorpt_correction_T_max  0.9919
_exptl_absorpt_correction_T_min  0.9839
_exptl_absorpt_correction_type   none
_exptl_crystal_density_diffrn    1.255
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             600
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.625
_refine_diff_density_min         -0.295
_refine_diff_density_rms         0.043
_refine_ls_extinction_coef       0.021(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     192
_refine_ls_number_reflns         2930
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.036
_refine_ls_R_factor_all          0.0689
_refine_ls_R_factor_gt           0.0569
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0873P)^2^+0.5474P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1592
_refine_ls_wR_factor_ref         0.1744
_reflns_number_gt                2338
_reflns_number_total             2930
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4ra12091d2.cif
_cod_data_source_block           d:\data\guest\140701a\work\mo_140701a_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2935 2014-11-11 08:27:57Z andrius 
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7218899