Multistate Photochromism of 1-Phenylnaphthalene-Bridged Imidazole Dimer That Has Three Colorless Isomers and Two Colored Isomers.
Yamaguchi, Tetsuo; Hatano, Sayaka; Abe, Jiro; The journal of physical chemistry. A 118 (2013) 134–; doi:10.1021/jp411190d

data_1513348
_publ_section_title
;
 Multistate Photochromism of 1-Phenylnaphthalene-Bridged Imidazole Dimer
 That Has Three Colorless Isomers and Two Colored Isomers.
;
_journal_issue                   1
_journal_name_full               'The journal of physical chemistry. A'
_journal_page_first              134
_journal_paper_doi               10.1021/jp411190d
_journal_volume                  118
_journal_year                    2013
_chemical_formula_sum            'C46 H30 N4'
_chemical_formula_weight         638.74
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 94.357(9)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.145(8)
_cell_length_b                   25.68(2)
_cell_length_c                   12.867(10)
_cell_measurement_reflns_used    7225
_cell_measurement_temperature    93
_cell_measurement_theta_max      27.68
_cell_measurement_theta_min      2.25
_cell_volume                     3342(5)
_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, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      93
_diffrn_detector_area_resol_mean 8.333
_diffrn_measured_fraction_theta_full 10.00
_diffrn_measured_fraction_theta_max 10.00
_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  0.0716
_diffrn_reflns_av_sigmaI/netI    0.0629
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       33
_diffrn_reflns_limit_k_min       -33
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            18392
_diffrn_reflns_theta_full        28.10
_diffrn_reflns_theta_max         28.10
_diffrn_reflns_theta_min         1.59
_exptl_absorpt_coefficient_mu    0.075
_exptl_absorpt_correction_T_max  0.9753
_exptl_absorpt_correction_T_min  0.9551
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
;
SADABS Sheldrick 1996
;
_exptl_crystal_colour            red
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1336
_exptl_crystal_size_max          0.62
_exptl_crystal_size_mid          0.34
_exptl_crystal_size_min          0.34
_refine_diff_density_max         0.339
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_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     451
_refine_ls_number_reflns         7547
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.069
_refine_ls_R_factor_all          0.0651
_refine_ls_R_factor_gt           0.0473
_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^)+(0.0708P)^2^+0.1065P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1188
_refine_ls_wR_factor_ref         0.1324
_reflns_number_gt                5680
_reflns_number_total             7547
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jp411190d_si_005.cif
_cod_data_source_block           20130220_mono
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/current/ACS/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 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_cell_volume        3342(4)
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               1513348