Supramolecular Steric Hindrance Effect on Morphologies and Photophysical Behaviors of Spirocyclic Aromatic Hydrocarbon Nanocrystals
Li, Yin-Xiang; Zhang, He; Yu, Mengna; Wang, Sha-Sha; Liu, Yi-Ran; Lin, Dongqing; Xie, Linghai; Lin, Zong-Qiong; Huang, Wei; Nanoscale  (2019) –; doi:10.1039/C9NR01064E

data_1550705
_publ_section_title
;
 Supramolecular Steric Hindrance Effect on Morphologies and Photophysical
 Behaviors of Spirocyclic Aromatic Hydrocarbon Nanocrystals
;
_journal_name_full               Nanoscale
_journal_paper_doi               10.1039/C9NR01064E
_journal_year                    2019
_chemical_formula_sum            'C41 H24'
_chemical_formula_weight         516.60
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 110.752(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.999(5)
_cell_length_b                   11.913(4)
_cell_length_c                   16.835(5)
_cell_measurement_reflns_used    1026
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      18.27
_cell_measurement_theta_min      2.32
_cell_volume                     2813.0(16)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_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      293(2)
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_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           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0748
_diffrn_reflns_av_sigmaI/netI    0.1109
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            17160
_diffrn_reflns_theta_full        27.46
_diffrn_reflns_theta_max         27.46
_diffrn_reflns_theta_min         2.32
_exptl_absorpt_coefficient_mu    0.069
_exptl_absorpt_correction_T_max  0.9897
_exptl_absorpt_correction_T_min  0.9843
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.220
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1080
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.148
_refine_diff_density_min         -0.204
_refine_diff_density_rms         0.039
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.022
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     370
_refine_ls_number_reflns         6379
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.022
_refine_ls_R_factor_all          0.1821
_refine_ls_R_factor_gt           0.0545
_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^)+(0.0100P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0830
_refine_ls_wR_factor_ref         0.1080
_reflns_number_gt                2294
_reflns_number_total             6379
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c9nr01064e1.cif
_cod_data_source_block           pc_1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/home/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 4973 2017-02-22 13:04:09Z antanas 
;
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               1550705