An Organic White Light-Emitting Fluorophore
Youjun Yang; Mark Lowry; Corin M. Schowalter; Sayo O. Fakayode; Jorge O. Escobedo; Xiangyang Xu; Huating Zhang; Timothy J. Jensen; Frank R. Fronczek; Isiah M. Warner; Robert M. Strongin; Journal of the American Chemical Society 128 (2006) 14081–14092; doi:10.1021/ja0632207

data_4111027
_publ_section_title
;
 An Organic White Light-Emitting Fluorophore
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              14081
_journal_page_last               14092
_journal_paper_doi               10.1021/ja0632207
_journal_volume                  128
_journal_year                    2006
_chemical_compound_source        'Local laboratory'
_chemical_formula_moiety         'C28 H20 O4, 2(C3 H6 O)'
_chemical_formula_sum            'C34 H32 O6'
_chemical_formula_weight         536.60
_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
_cell_angle_beta                 102.115(7)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   14.395(3)
_cell_length_b                   8.6291(15)
_cell_length_c                   23.881(5)
_cell_measurement_reflns_used    5246
_cell_measurement_temperature    110
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      2.5
_cell_volume                     2900.3(10)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'COLLECT (Nonius, 2000)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Altomare et al., 1999)'
_diffrn_ambient_temperature      110
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device       'KappaCCD (with Oxford Cryostream)'
_diffrn_measurement_method       ' \w scans with \k offsets'
_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  0.033
_diffrn_reflns_av_sigmaI/netI    0.0517
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            17816
_diffrn_reflns_theta_full        25.0
_diffrn_reflns_theta_max         27.5
_diffrn_reflns_theta_min         2.7
_diffrn_standards_decay_%        <2
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.229
_exptl_crystal_description       'needle fragment'
_exptl_crystal_F_000             1136
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.24
_refine_diff_density_min         -0.25
_refine_diff_density_rms         0.053
_refine_ls_extinction_coef       0.0073(8)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.104
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     373
_refine_ls_number_reflns         6613
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.104
_refine_ls_R_factor_all          0.093
_refine_ls_R_factor_gt           0.063
_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^)+(0.0251P)^2^+3.3484P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.133
_refine_ls_wR_factor_ref         0.145
_reflns_number_gt                4796
_reflns_number_total             6613
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ja0632207si20060509_024357.cif
_cod_data_source_block           10
_cod_original_sg_symbol_H-M      'P 21/c '
_cod_database_code               4111027