Electrosynthesis of a Biaurone by Controlled Dimerization of Flavone: Mechanistic Insight and Large-Scale Application.
Hosseini, Seyyedamirhossein; Thapa, Bishnu; Medeiros, Maria Jose; Pasciak, Erick M.; Pence, Michael A.; Twum, Eric B.; Karty, Jonathan A.; Gao, Xinfeng; Mubarak, Mohammad S.; Raghavachari, Krishnan; Peters, Dennis G.; The Journal of organic chemistry  (2020) –; doi:10.1021/acs.joc.0c01220

data_4038638
_publ_section_title
;
 Electrosynthesis of a Biaurone by Controlled Dimerization of Flavone:
 Mechanistic Insight and Large-Scale Application.
;
_journal_name_full               'The Journal of organic chemistry'
_journal_paper_doi               10.1021/acs.joc.0c01220
_journal_year                    2020
_chemical_formula_moiety         'C30 H18 O4'
_chemical_formula_sum            'C30 H18 O4'
_chemical_formula_weight         442.47
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     other
_audit_creation_date             2018-06-17
_audit_creation_method           CRYSTALS_ver_14.61_build_6236
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   10.1603(6)
_cell_length_b                   14.3842(7)
_cell_length_c                   29.7704(18)
_cell_measurement_reflns_used    6771
_cell_measurement_temperature    173
_cell_measurement_theta_max      26
_cell_measurement_theta_min      2
_cell_volume                     4350.9(4)
_computing_cell_refinement       'Apex2 (Bruker AXS, 2006)'
_computing_data_collection       'Apex2 (Bruker AXS, 2006)'
_computing_data_reduction        'Apex2 (Bruker AXS, 2006)'
_computing_molecular_graphics    'CAMERON (Watkin et al., 1996)'
_computing_publication_material  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_solution    'Superflip (Palatinus & Chapuis, 2007)'
_diffrn_ambient_temperature      173
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device       Area
_diffrn_measurement_device_type  'Bruker Kappa Apex2'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.055
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -37
_diffrn_reflns_number            32369
_diffrn_reflns_theta_full        26.046
_diffrn_reflns_theta_max         26.577
_diffrn_reflns_theta_min         1.368
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_T_max  0.99
_exptl_absorpt_correction_T_min  0.99
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Siemens, 1996)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.351
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             1840
_exptl_crystal_size_max          0.300
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.100
_refine_diff_density_max         0.41
_refine_diff_density_min         -0.48
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   0.9672
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     307
_refine_ls_number_reflns         4498
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0759
_refine_ls_R_factor_gt           0.0436
_refine_ls_shift/su_max          0.0005007
_refine_ls_shift/su_mean         0.0000759
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 Method= Modified Sheldrick 
 w=1/[\s^2^(F^2^) + ( 0.04P)^2^ + 1.92P] 
 ,where P=(max(Fo^2^,0) + 2Fc^2^)/3 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1038
_refine_ls_wR_factor_gt          0.0895
_refine_ls_wR_factor_ref         0.1036
_reflns_limit_h_max              12
_reflns_limit_h_min              0
_reflns_limit_k_max              17
_reflns_limit_k_min              0
_reflns_limit_l_max              37
_reflns_limit_l_min              0
_reflns_number_gt                3130
_reflns_number_total             4516
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   0.00
_oxford_diffrn_Wilson_scale      0.00
_oxford_refine_ls_r_factor_ref   0.0758
_oxford_refine_ls_scale          0.11755(4)
_oxford_reflns_number_all        4499
_oxford_reflns_threshold_expression_ref I>-3.0\s(I)
_oxford_structure_analysis_title 'mo_18062_0m in Pbca'
_cod_data_source_file            jo0c01220_si_002.cif
_cod_data_source_block           18062
_cod_depositor_comments
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The following automatic conversions were performed:

data item '_atom_sites_solution_primary' value 'Other' was changed to
'other' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 7556 2019-12-06 15:28:31Z antanas 
;
_cod_original_sg_symbol_H-M      'P b c a '
_cod_database_code               4038638