A new synthetic route to substituted tetracenes and pentacenes via stereoselective [4+2] cycloadditions of 1,4-dihydro-1,4-epoxynaphthalene and isobenzofuran
Shohei Eda; Fumiaki Eguchi; Hiroshi Haneda; Toshiyuki Hamura; Chem.Commun. 51 (2015) 5963–; doi:10.1039/C5cc00077G

data_7116834
_publ_section_title
;
 A new synthetic route to substituted tetracenes and pentacenes via
 stereoselective [4+2] cycloadditions of 1,4-dihydro-1,4-epoxynaphthalene
 and isobenzofuran
;
_journal_name_full               Chem.Commun.
_journal_page_first              5963
_journal_paper_doi               10.1039/C5cc00077G
_journal_volume                  51
_journal_year                    2015
_chemical_formula_moiety         'C30 H22 O2'
_chemical_formula_sum            'C30 H22 O2'
_chemical_formula_weight         414.48
_chemical_name_systematic        anti-endo_2Ph
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2015-01-05 deposited with the CCDC.
2015-02-25 downloaded from the CCDC.
;
_cell_angle_alpha                84.8320(10)
_cell_angle_beta                 71.7710(10)
_cell_angle_gamma                84.1800(10)
_cell_formula_units_Z            4
_cell_length_a                   10.4480(2)
_cell_length_b                   12.7886(2)
_cell_length_c                   16.6149(3)
_cell_measurement_reflns_used    24713
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      68.25
_cell_measurement_theta_min      3.48
_cell_volume                     2093.72(7)
_computing_cell_refinement       RAPID-AUTO
_computing_data_collection       RAPID-AUTO
_computing_data_reduction        RAPID-AUTO
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_pressure         101.3
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 10.0
_diffrn_measured_fraction_theta_full 0.980
_diffrn_measured_fraction_theta_max 0.980
_diffrn_measurement_device_type  'RIGAKU R-AXIS RAPID'
_diffrn_measurement_method       \w-scan
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54186
_diffrn_reflns_av_R_equivalents  0.0404
_diffrn_reflns_av_sigmaI/netI    0.0516
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            24713
_diffrn_reflns_theta_full        68.25
_diffrn_reflns_theta_max         68.25
_diffrn_reflns_theta_min         3.48
_diffrn_source                   'rotaing anode x-ray'
_diffrn_source_type              rigaku
_exptl_absorpt_coefficient_mu    0.634
_exptl_absorpt_correction_T_max  0.9714
_exptl_absorpt_correction_T_min  0.9289
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'abscor Higashi RIGAKU'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.315
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             872
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.222
_refine_diff_density_min         -0.250
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.121
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     577
_refine_ls_number_reflns         7524
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.121
_refine_ls_R_factor_all          0.0589
_refine_ls_R_factor_gt           0.0465
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0708P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1267
_refine_ls_wR_factor_ref         0.1373
_reflns_number_gt                5681
_reflns_number_total             7524
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c5cc00077g2.cif
_cod_data_source_block           C30H22O2_anti-endo
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'multi scan' changed to
'multi-scan' according to the built-in table from CIF Core dictionary
named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 2827 2014-09-09 07:05:25Z andrius 
;
_cod_original_cell_volume        2093.72(6)
_cod_database_code               7116834