Synthesis and Optical Properties of Phenylene-Containing Oligoacenes
Rebecca R. Parkhurst; Timothy M. Swager; Journal of the American Chemical Society 134 (2012) 15351–15356; doi:10.1021/ja3043883

data_4118620
_publ_section_title
;
 Synthesis and Optical Properties of Phenylene-Containing Oligoacenes
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              15351
_journal_page_last               15356
_journal_paper_doi               10.1021/ja3043883
_journal_volume                  134
_journal_year                    2012
_chemical_formula_sum            'C36 H22 O3'
_chemical_formula_weight         502.54
_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                 100.065(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.5507(2)
_cell_length_b                   17.9987(4)
_cell_length_c                   16.5702(4)
_cell_measurement_reflns_used    9959
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      69.24
_cell_measurement_theta_min      3.66
_cell_volume                     2510.93(10)
_computing_cell_refinement       'SAINT 7.46A (Bruker-AXS, 2009)'
_computing_data_collection       'APEX2 v2009.9.0 (Bruker-AXS, 2009)'
_computing_data_reduction        'SAINT 7.46A (Bruker-AXS, 2009)'
_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      100(2)
_diffrn_detector_area_resol_mean 8.3
_diffrn_measured_fraction_theta_full 0.971
_diffrn_measured_fraction_theta_max 0.971
_diffrn_measurement_device_type  'Bruker Smart APEX CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0302
_diffrn_reflns_av_sigmaI/netI    0.0128
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            50140
_diffrn_reflns_theta_full        69.29
_diffrn_reflns_theta_max         69.29
_diffrn_reflns_theta_min         3.66
_exptl_absorpt_coefficient_mu    0.663
_exptl_absorpt_correction_T_max  0.8259
_exptl_absorpt_correction_T_min  0.7546
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2009)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.329
_exptl_crystal_description       block
_exptl_crystal_F_000             1048
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.261
_refine_diff_density_min         -0.318
_refine_diff_density_rms         0.060
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.030
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     352
_refine_ls_number_reflns         4562
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.030
_refine_ls_R_factor_all          0.0400
_refine_ls_R_factor_gt           0.0384
_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^)+(0.0559P)^2^+0.8832P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0962
_refine_ls_wR_factor_ref         0.0979
_reflns_number_gt                4317
_reflns_number_total             4562
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja3043883_si_003.cif
_cod_data_source_block           d10057
_cod_database_code               4118620