One-pot synthesis of coumarin-based oxazabicyclic and oxazatricyclic compounds and their fluorescence redox switching properties.
Lin, Chi-Hui; Jhang, Jing-Fu; Yang, Ding-Yah; Organic letters 11 (2009) 4064–4067; doi:10.1021/ol901505e

data_1504107
_publ_section_title
;
 One-pot synthesis of coumarin-based oxazabicyclic and oxazatricyclic
 compounds and their fluorescence redox switching properties.
;
_journal_issue                   18
_journal_name_full               'Organic letters'
_journal_page_first              4064
_journal_page_last               4067
_journal_paper_doi               10.1021/ol901505e
_journal_volume                  11
_journal_year                    2009
_chemical_formula_moiety         'C25 H28 N2 O3'
_chemical_formula_sum            'C25 H28 N2 O3'
_chemical_formula_weight         404.49
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      61
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   13.0902(8)
_cell_length_b                   16.4023(10)
_cell_length_c                   19.4869(12)
_cell_measurement_reflns_used    6438
_cell_measurement_temperature    297(2)
_cell_measurement_theta_max      25.977
_cell_measurement_theta_min      2.246
_cell_volume                     4184.0(4)
_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, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      297(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0374
_diffrn_reflns_av_sigmaI/netI    0.0250
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            22394
_diffrn_reflns_theta_full        26.03
_diffrn_reflns_theta_max         26.03
_diffrn_reflns_theta_min         2.09
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_T_max  0.9751
_exptl_absorpt_correction_T_min  0.9550
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   empirical
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.284
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       parallelepiped
_exptl_crystal_F_000             1728
_exptl_crystal_size_max          0.55
_exptl_crystal_size_mid          0.48
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.356
_refine_diff_density_min         -0.309
_refine_diff_density_rms         0.041
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.318
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     275
_refine_ls_number_reflns         4120
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.318
_refine_ls_R_factor_all          0.0703
_refine_ls_R_factor_gt           0.0474
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0750P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1445
_refine_ls_wR_factor_ref         0.1561
_reflns_number_gt                2886
_reflns_number_total             4120
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol901505e_si_005.cif
_cod_data_source_block           ch086m
_cod_database_code               1504107