Synthesis and properties of aggregation-induced emission enhancement compounds derived from triarylcyclopentadiene
Yang, Lijian; Ye, Junwei; Xu, Lifeng; Yang, Xinyu; Gong, Weitao; Lin, Yuan; Ning, Guiling; RSC Advances 2 (2012) 11529–; doi:10.1039/c2ra21622a

data_7238727
_publ_section_title
;
 Synthesis and properties of aggregation-induced emission enhancement
 compounds derived from triarylcyclopentadiene
;
_journal_issue                   30
_journal_name_full               'RSC Advances'
_journal_page_first              11529
_journal_paper_doi               10.1039/c2ra21622a
_journal_volume                  2
_journal_year                    2012
_chemical_formula_sum            'C27 H20'
_chemical_formula_weight         344.43
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_space_group_name_Hall           'P 2c -2ac'
_space_group_name_H-M_alt        'P c a 21'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_H-M   'P c a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
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_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.060(5)
_cell_length_b                   17.548(6)
_cell_length_c                   7.824(3)
_cell_measurement_reflns_used    10706
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      17.656
_cell_measurement_theta_min      2.322
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_computing_cell_refinement       PROCESS-AUTO
_computing_data_collection       PROCESS-AUTO
_computing_data_reduction        PROCESS-AUTO
_computing_molecular_graphics    'SHELXL-97 (Sheldrick, 1997)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 10.0
_diffrn_measured_fraction_theta_full 0.979
_diffrn_measured_fraction_theta_max 0.979
_diffrn_measurement_device_type  'Rigaku RAXIS-RAPID'
_diffrn_measurement_method       'Omega scan'
_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  0.0504
_diffrn_reflns_av_sigmaI/netI    0.0699
_diffrn_reflns_limit_h_max       18
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_diffrn_reflns_limit_l_min       -10
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_diffrn_reflns_theta_full        27.69
_diffrn_reflns_theta_max         27.69
_diffrn_reflns_theta_min         1.86
_diffrn_standards_decay_%        none
_diffrn_standards_interval_count none
_diffrn_standards_interval_time  none
_diffrn_standards_number         none
_exptl_absorpt_coefficient_mu    0.067
_exptl_absorpt_correction_T_max  0.9881
_exptl_absorpt_correction_T_min  0.9867
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Higashi, T. (1995) Progrom for Absorption Correcttion.
Rigaku Corporation, Tokyo, Japan.
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.185
_exptl_crystal_density_meas      ?
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_refine_diff_density_max         0.099
_refine_diff_density_min         -0.139
_refine_diff_density_rms         0.028
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   10(10)
_refine_ls_extinction_coef       0
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.989
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     245
_refine_ls_number_reflns         4242
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.989
_refine_ls_R_factor_all          0.1531
_refine_ls_R_factor_gt           0.0528
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0318P)^2^+0.0590P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0875
_refine_ls_wR_factor_ref         0.1156
_reflns_number_gt                1888
_reflns_number_total             4242
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2ra21622a.txt
_cod_data_source_block           5
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Orthorhombic' was changed
to 'orthorhombic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

data item '_exptl_crystal_density_meas' value 'not measured' was
changed to '?' -- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      'Pca2(1) '
_cod_database_code               7238727