Helically Locked Tethered Twistacenes.
Bedi, Anjan; Shimon, Linda J. W.; Gidron, Ori; Journal of the American Chemical Society 140 (2018) 8086–8090; doi:10.1021/jacs.8b04447

data_4132503
_publ_section_title
;
 Helically Locked Tethered Twistacenes.
;
_journal_issue                   26
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              8086
_journal_page_last               8090
_journal_paper_doi               10.1021/jacs.8b04447
_journal_volume                  140
_journal_year                    2018
_chemical_formula_moiety         'C45 H26 F12 O2'
_chemical_formula_sum            'C45 H26 F12 O2'
_chemical_formula_weight         826.66
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                68.563(2)
_cell_angle_beta                 79.735(2)
_cell_angle_gamma                87.455(2)
_cell_formula_units_Z            2
_cell_length_a                   8.9854(11)
_cell_length_b                   13.2220(16)
_cell_length_c                   16.513(2)
_cell_measurement_reflns_used    8463
_cell_measurement_temperature    123(1)
_cell_measurement_theta_max      27.955
_cell_measurement_theta_min      2.484
_cell_volume                     1796.4(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  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      123(1)
_diffrn_measured_fraction_theta_full 0.974
_diffrn_measured_fraction_theta_max 0.974
_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  0.0224
_diffrn_reflns_av_sigmaI/netI    0.0292
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            19287
_diffrn_reflns_theta_full        27.00
_diffrn_reflns_theta_max         27.00
_diffrn_reflns_theta_min         1.71
_exptl_absorpt_coefficient_mu    0.135
_exptl_absorpt_correction_T_max  0.9708
_exptl_absorpt_correction_T_min  0.9366
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SADABS V2.05'
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.528
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Plate
_exptl_crystal_F_000             840
_exptl_crystal_size_max          0.49
_exptl_crystal_size_mid          0.31
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.335
_refine_diff_density_min         -0.276
_refine_diff_density_rms         0.049
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.022
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     640
_refine_ls_number_reflns         7628
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.022
_refine_ls_R_factor_all          0.0555
_refine_ls_R_factor_gt           0.0474
_refine_ls_shift/su_max          0.006
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0585P)^2^+0.8942P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1170
_refine_ls_wR_factor_ref         0.1234
_reflns_number_gt                6608
_reflns_number_total             7628
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja8b04447_si_006.cif
_cod_data_source_block           origi14m
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Triclinic' was changed to
'triclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/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 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_cell_volume        1796.5(4)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4132503