Synthesis of coumarin/phenanthridine-fused heterocycles and their photochemical and thermochromic properties.
Chen, Jiun-Jia; Li, Kuan-Ting; Yang, Ding-Yah; Organic letters 13 (2011) 1658–1661; doi:10.1021/ol200117b

data_1502039
_publ_section_title
;
 Synthesis of coumarin/phenanthridine-fused heterocycles and their
 photochemical and thermochromic properties.
;
_journal_issue                   7
_journal_name_full               'Organic letters'
_journal_page_first              1658
_journal_page_last               1661
_journal_paper_doi               10.1021/ol200117b
_journal_volume                  13
_journal_year                    2011
_chemical_formula_moiety         'C25 H22 N2 O3'
_chemical_formula_sum            'C25 H22 N2 O3'
_chemical_formula_weight         398.45
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_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                 101.217(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.5671(11)
_cell_length_b                   8.6420(8)
_cell_length_c                   21.537(2)
_cell_measurement_reflns_used    3385
_cell_measurement_temperature    297(2)
_cell_measurement_theta_max      25.113
_cell_measurement_theta_min      2.367
_cell_volume                     2111.8(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_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      297(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0383
_diffrn_reflns_av_sigmaI/netI    0.0378
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            11577
_diffrn_reflns_theta_full        26.01
_diffrn_reflns_theta_max         26.01
_diffrn_reflns_theta_min         1.79
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  1.000000
_exptl_absorpt_correction_T_min  0.773149
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.253
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       parallelepiped
_exptl_crystal_F_000             840
_exptl_crystal_size_max          0.62
_exptl_crystal_size_mid          0.38
_exptl_crystal_size_min          0.25
_platon_squeeze_details          ' '
_refine_diff_density_max         0.208
_refine_diff_density_min         -0.218
_refine_diff_density_rms         0.052
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.998
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     274
_refine_ls_number_reflns         4132
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.998
_refine_ls_R_factor_all          0.0880
_refine_ls_R_factor_gt           0.0611
_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^)+(0.1183P)^2^+0.7830P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1944
_refine_ls_wR_factor_ref         0.2151
_reflns_number_gt                2569
_reflns_number_total             4132
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol200117b_si_004.cif
_cod_data_source_block           jj026m
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               1502039