Synthesis and Characterization of 2,7-Di(tert-butyl)pyreno[4,5-c:9,10-c']difuran and Derived Pyrenophanes
David Franz; Steven J. Robbins; René T. Boeré; Peter W. Dibble; Journal of Organic Chemistry 74 (2009) 7544–7547; doi:10.1021/jo901482y

data_4024885
_publ_contact_author_address
; 
Department of Chemistry and Biochemistry
University of Lethbridge
Lethbridge, AB Canada
T1K 3M4
;
_publ_contact_author_email       dibble@uleth.ca
_publ_contact_author_fax         +1-403-329-2045
_publ_contact_author_name        'Dibble, Peter W.'
_publ_contact_author_phone       +1-403-329-2308
_publ_section_title
;
Synthesis and Characterization of
2,7-Di(tert-butyl)pyreno[4,5-c:9,10-c']difuran and Derived Pyrenophanes
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              7544
_journal_page_last               7547
_journal_paper_doi               10.1021/jo901482y
_journal_volume                  74
_journal_year                    2009
_chemical_formula_moiety         'C28 H26 O2'
_chemical_formula_sum            'C28 H26 O2'
_chemical_formula_weight         394.49
_chemical_name_systematic
; 
 ? 
;
_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
_audit_update_record
;
2008-12-19 # Formatted by publCIF
;
_cell_angle_alpha                90.00
_cell_angle_beta                 100.4640(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   20.5543(15)
_cell_length_b                   10.3895(8)
_cell_length_c                   10.2119(8)
_cell_measurement_reflns_used    24038
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      0.0214
_cell_measurement_theta_min      0.0270
_cell_volume                     2144.5(3)
_computing_cell_refinement       'APEX2 (Bruker, 2006)'
_computing_data_collection       'APEX2 (Bruker, 2006)'
_computing_data_reduction        'SAINT-Plus (Bruker, 2006)'
_computing_molecular_graphics    'MERCURY (Macrae <i>et al.</i>, 2006)'
_computing_publication_material  'IUCr publCIF (Westrip, 2007)'
_computing_structure_refinement  'SHELXTL (Sheldrick, 2003)'
_computing_structure_solution    'SHELXTL (Sheldrick, 2003)'
_diffrn_ambient_pressure         101
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type
;
Bruker ApexII CCD area detector
;
_diffrn_measurement_method       'phi and omega scans'
_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  0.0270
_diffrn_reflns_av_sigmaI/netI    0.0214
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            24038
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         27.42
_diffrn_reflns_theta_min         2.02
_exptl_absorpt_coefficient_mu    0.075
_exptl_absorpt_correction_T_max  0.9842
_exptl_absorpt_correction_T_min  0.9645
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
SADABS (Sheldrick, 2004)
;
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.222
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             840
_exptl_crystal_recrystallization_method Evaporation
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.427
_refine_diff_density_min         -0.263
_refine_diff_density_rms         0.047
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.070
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     308
_refine_ls_number_reflns         4879
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.070
_refine_ls_R_factor_all          0.0733
_refine_ls_R_factor_gt           0.0579
_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^)+(0.0633P)^2^+1.6038P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1538
_refine_ls_wR_factor_ref         0.1638
_reflns_number_gt                3772
_reflns_number_total             4879
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo901482y_si_001_1.cif
_cod_data_source_block           bis(IBF)
_cod_original_sg_symbol_Hall     -P2ybc
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4024885