Synthesis, Structural Analysis, and Chiral Investigations of Some Atropisomers with EE-Tetrahalogeno-1,3-butadiene Core
Piron, Flavia; Vanthuyne, Nicolas; Joulin, Bérangère; Naubron, Jean-Valère; Cismaş, Crina; Terec, Anamaria; Varga, Richard Attila; Roussel, Christian; Roncali, Jean; Grosu, Ion; Journal of Organic Chemistry 74 (2009) 9062–9070; doi:10.1021/jo901762j

data_4028962
_publ_section_title
;
 Synthesis, Structural Analysis, and Chiral Investigations of Some
 Atropisomers with EE-Tetrahalogeno-1,3-butadiene Core
;
_journal_coden_ASTM              JOCEAH
_journal_issue                   23
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              9062
_journal_page_last               9070
_journal_paper_doi               10.1021/jo901762j
_journal_volume                  74
_journal_year                    2009
_chemical_formula_sum            'C12 H12 I4 N2 O4'
_chemical_formula_weight         755.33
_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                 103.0730(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   17.1722(10)
_cell_length_b                   11.5894(7)
_cell_length_c                   19.7178(12)
_cell_measurement_reflns_used    5834
_cell_measurement_temperature    297(2)
_cell_measurement_theta_max      23.55
_cell_measurement_theta_min      2.26
_cell_volume                     3822.4(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      297(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  '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  0.0458
_diffrn_reflns_av_sigmaI/netI    0.0401
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            27157
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.79
_exptl_absorpt_coefficient_mu    6.537
_exptl_absorpt_correction_T_max  0.271
_exptl_absorpt_correction_T_min  0.207
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker, 2000.'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.625
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2732
_exptl_crystal_size_max          0.27
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.20
_refine_diff_density_max         2.548
_refine_diff_density_min         -1.913
_refine_diff_density_rms         0.160
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.103
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     398
_refine_ls_number_reflns         6738
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.103
_refine_ls_R_factor_all          0.0639
_refine_ls_R_factor_gt           0.0554
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0337P)^2^+38.3416P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1142
_refine_ls_wR_factor_ref         0.1181
_reflns_number_gt                5899
_reflns_number_total             6738
_reflns_threshold_expression     >2sigma(I)
_cod_duplicate_entry             4025078
_cod_data_source_file            jo901762jsup3.cif
_cod_data_source_block           371rich
_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_Hall     '-P 2yn '
_cod_original_sg_symbol_H-M      'P2(1)/n  '
_cod_database_code               4028962