Ligand-to-Ligand Interactions That Direct Formation of D<sub>2</sub>-Symmetrical Alternating Circular Helicate.
Bing, Tan Yan; Kawai, Tsuyoshi; Yuasa, Junpei; Journal of the American Chemical Society 140 (2018) 3683–3689; doi:10.1021/jacs.7b12663

data_4131903
_publ_section_title
;
 Ligand-to-Ligand Interactions That Direct Formation of
 D<sub>2</sub>-Symmetrical Alternating Circular Helicate.
;
_journal_issue                   10
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              3683
_journal_page_last               3689
_journal_paper_doi               10.1021/jacs.7b12663
_journal_volume                  140
_journal_year                    2018
_chemical_absolute_configuration rmad
_chemical_formula_moiety         'C176 H112 Eu4 F36 N12 O32, 2(C4 H10 O)'
_chemical_formula_sum            'C184 H132 Eu4 F36 N12 O34'
_chemical_formula_weight         4346.91
_space_group_crystal_system      monoclinic
_space_group_IT_number           5
_space_group_name_Hall           'C 2y'
_space_group_name_H-M_alt        'C 1 2 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.0000
_cell_angle_beta                 101.626(7)
_cell_angle_gamma                90.0000
_cell_formula_units_Z            2
_cell_length_a                   25.7603(5)
_cell_length_b                   35.0350(6)
_cell_length_c                   12.4435(2)
_cell_measurement_reflns_used    76249
_cell_measurement_temperature    123
_cell_measurement_theta_max      25.36
_cell_measurement_theta_min      3.02
_cell_volume                     11000.0(4)
_computing_cell_refinement       'RAPID AUTO'
_computing_data_collection       'RAPID AUTO (Rigaku, ????)'
_computing_data_reduction        'RAPID AUTO'
_computing_molecular_graphics    'CrystalStructure 4.2'
_computing_publication_material  'CrystalStructure 4.2 (Rigaku, 2015)'
_computing_structure_refinement  'SHELXL Version 2014/7 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXT Version 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      123
_diffrn_detector_area_resol_mean 10.000
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Rigaku R-AXIS RAPID'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0244
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       31
_diffrn_reflns_limit_h_min       -31
_diffrn_reflns_limit_k_max       41
_diffrn_reflns_limit_k_min       -42
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            75097
_diffrn_reflns_point_group_measured_fraction_full 0.970
_diffrn_reflns_point_group_measured_fraction_max 0.969
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.351
_diffrn_reflns_theta_min         3.017
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.215
_exptl_absorpt_correction_T_max  0.864
_exptl_absorpt_correction_T_min  0.667
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'ABSCOR (Rigaku, 1995)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.312
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             4336.00
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.170
_exptl_crystal_size_min          0.120
_refine_diff_density_max         1.18
_refine_diff_density_min         -0.67
_refine_ls_abs_structure_details
;
 Flack x determined using 8740 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.014(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.033
_refine_ls_hydrogen_treatment    constr
_refine_ls_number_parameters     1220
_refine_ls_number_reflns         19537
_refine_ls_number_restraints     1
_refine_ls_R_factor_all          0.0228
_refine_ls_R_factor_gt           0.0221
_refine_ls_shift/su_max          0.003
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0229P)^2^+9.2003P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0498
_refine_ls_wR_factor_ref         0.0500
_reflns_Friedel_coverage         0.909
_reflns_Friedel_fraction_full    0.940
_reflns_Friedel_fraction_max     0.940
_reflns_number_gt                19163
_reflns_number_total             19537
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            '[(R)PhPybox]4(EuIII)4(BTP)6.cif'
_cod_data_source_block           exp9
_cod_database_code               4131903
_shelx_res_checksum              85979
_shelx_hkl_checksum              79426
_platon_squeeze_void_probe_radius 1.20