Facile Synthesis of Unsubstituted β,β'-Linked Diformyldipyrromethanes
Zhan Zhang; Ji-Young Shin; David Dolphin; Journal of Organic Chemistry 73 (2008) 9515–9517; doi:10.1021/jo802114h

data_4023914
_publ_contact_author_address
;Department of Chemistry,
University of British Columbia, 
2036 Main Mall, Vancouver
BC V6T1Z1 Canada
;
_publ_contact_author_email       david.dolphin@ubc.ca
_publ_contact_author_fax         1-604-822-9678
_publ_contact_author_name        'Daivd Dolphin'
_publ_contact_author_phone       1-604-822-4571
_publ_section_title
;
 Facile Synthesis of Unsubstituted \b,\b'-Linked
 Diformyldipyrromethanes
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              9515
_journal_page_last               9517
_journal_paper_doi               10.1021/jo802114h
_journal_volume                  73
_journal_year                    2008
_chemical_formula_sum            'C12 H17 Cl N2 O4'
_chemical_formula_weight         288.73
_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                 93.762(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.8704(4)
_cell_length_b                   15.0295(11)
_cell_length_c                   10.2274(7)
_cell_measurement_reflns_used    1668
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      25.00
_cell_measurement_theta_min      2.41
_cell_volume                     1360.55(15)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.970
_diffrn_measured_fraction_theta_max 0.970
_diffrn_measurement_device_type  'Bruker X8 APEX'
_diffrn_measurement_method       'area detector'
_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  0.0451
_diffrn_reflns_av_sigmaI/netI    0.0453
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            8615
_diffrn_reflns_theta_full        25.05
_diffrn_reflns_theta_max         25.05
_diffrn_reflns_theta_min         2.41
_exptl_absorpt_coefficient_mu    0.293
_exptl_absorpt_correction_T_max  0.985
_exptl_absorpt_correction_T_min  0.866
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.410
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             608
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.825
_refine_diff_density_min         -0.304
_refine_diff_density_rms         0.073
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     187
_refine_ls_number_reflns         2343
_refine_ls_number_restraints     28
_refine_ls_restrained_S_all      1.052
_refine_ls_R_factor_all          0.0917
_refine_ls_R_factor_gt           0.0657
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0863P)^2^+2.0589P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1647
_refine_ls_wR_factor_ref         0.1822
_reflns_number_gt                1694
_reflns_number_total             2343
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo802114h_si_001_2.cif
_cod_data_source_block           compound6
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4023914