b-Bilene to a,c-biladiene transformation during syntheses of isoporphyrins and porphyrins.
Mwakwari, Celinah; Fronczek, Frank R; Smith, Kevin M; Chemical communications (Cambridge, England)  (2007) 2258–2260; doi:10.1039/b705182d

data_7101959
_publ_section_title
;
 b-Bilene to a,c-biladiene transformation during syntheses of
 isoporphyrins and porphyrins.
;
_journal_issue                   22
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              2258
_journal_page_last               2260
_journal_paper_doi               10.1039/b705182d
_journal_year                    2007
_chemical_compound_source        'local laboratory'
_chemical_formula_moiety         'C37 H51 N4 O4 1+, Cl 1-, 2(C H2 Cl2)'
_chemical_formula_sum            'C39 H55 Cl5 N4 O4'
_chemical_formula_weight         821.12
_chemical_name_systematic
;
?
;
_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                 116.763(11)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   18.373(3)
_cell_length_b                   14.349(3)
_cell_length_c                   19.252(4)
_cell_measurement_reflns_used    10505
_cell_measurement_temperature    110
_cell_measurement_theta_max      28.7
_cell_measurement_theta_min      2.5
_cell_volume                     4531.8(15)
_computing_cell_refinement
'Denzo and Scalepack (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 2000)'
_computing_data_reduction
'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 0.984
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device_type  'Nonius 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  0.039
_diffrn_reflns_av_sigmaI/netI    0.0734
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            38008
_diffrn_reflns_theta_full        28.7
_diffrn_reflns_theta_max         28.7
_diffrn_reflns_theta_min         2.5
_diffrn_standards_decay_%        <2
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.360
_exptl_absorpt_correction_T_max  0.969
_exptl_absorpt_correction_T_min  0.928
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'Denzo and Scalepack (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.204
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1736
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.43
_refine_diff_density_min         -0.46
_refine_diff_density_rms         0.058
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.024
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     455
_refine_ls_number_reflns         11512
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.024
_refine_ls_R_factor_all          0.093
_refine_ls_R_factor_gt           0.052
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0717P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.130
_refine_ls_wR_factor_ref         0.143
_reflns_number_gt                7014
_reflns_number_total             11512
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b705182d.txt
_cod_data_source_block           Bilene5a
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      'P 21/c '
_cod_database_code               7101959