New near infrared-sensitive photochromic fluorescing molecules
Liang, Yongchao; Dvornikov, A. S.; Rentzepis, P. M.; Journal of Materials Chemistry 13 (2003) 286–; doi:10.1039/b206577k

data_7204487
_publ_section_title
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 New near infrared-sensitive photochromic fluorescing molecules
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_journal_issue                   2
_journal_name_full               'Journal of Materials Chemistry'
_journal_page_first              286
_journal_paper_doi               10.1039/b206577k
_journal_volume                  13
_journal_year                    2003
_chemical_formula_sum            'C21 H17 N3 O2'
_chemical_formula_weight         343.38
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXTL
_cell_angle_alpha                107.4560(10)
_cell_angle_beta                 97.5000(10)
_cell_angle_gamma                114.0340(10)
_cell_formula_units_Z            2
_cell_length_a                   8.9150(5)
_cell_length_b                   10.6693(7)
_cell_length_c                   11.0624(7)
_cell_measurement_temperature    158(2)
_cell_volume                     877.33(9)
_computing_cell_refinement       'Bruker SMART/SAINT'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      158(2)
_diffrn_measured_fraction_theta_full 0.960
_diffrn_measured_fraction_theta_max 0.960
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0428
_diffrn_reflns_av_sigmaI/netI    0.0621
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
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_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            9579
_diffrn_reflns_theta_full        28.26
_diffrn_reflns_theta_max         28.26
_diffrn_reflns_theta_min         2.02
_diffrn_standards_decay_%        '< 1.0'
_exptl_absorpt_coefficient_mu    0.086
_exptl_absorpt_correction_T_max  0.9957
_exptl_absorpt_correction_T_min  0.9764
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.300
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       irregular_plate
_exptl_crystal_F_000             360
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.273
_refine_diff_density_min         -0.249
_refine_diff_density_rms         0.050
_refine_ls_extinction_coef       0.009(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXTL
_refine_ls_goodness_of_fit_ref   1.011
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     304
_refine_ls_number_reflns         4176
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_refine_ls_restrained_S_all      1.011
_refine_ls_R_factor_all          0.0993
_refine_ls_R_factor_gt           0.0526
_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^)+(0.0572P)^2^+0.4007P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1169
_refine_ls_wR_factor_ref         0.1446
_reflns_number_gt                2615
_reflns_number_total             4176
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b206577k.txt
_cod_data_source_block           pmr4
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'none' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7204487