Empirical and Theoretical Insights into the Structural Features and Host-Guest Chemistry of M8L4 Tube Architectures.
Meng, Wenjing; League, Aaron B.; Ronson, Tanya K.; Clegg, Jack K.; Isley, 3rd, William C; Semrouni, David; Gagliardi, Laura; Cramer, Christopher J.; Nitschke, Jonathan R.; Journal of the American Chemical Society 136 (2014) 3972–3980; doi:10.1021/ja412964r

data_4121437
_publ_section_title
;
 Empirical and Theoretical Insights into the Structural Features and
 Host-Guest Chemistry of M8L4 Tube Architectures.
;
_journal_issue                   10
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              3972
_journal_page_last               3980
_journal_paper_doi               10.1021/ja412964r
_journal_volume                  136
_journal_year                    2014
_chemical_formula_moiety         '(C184 H152 Ag8 N32), 8(B F4)'
_chemical_formula_sum            'C184 H152 Ag8 B8 F32 N32'
_chemical_formula_weight         4368.82
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           155
_symmetry_cell_setting           rhombohedral
_symmetry_Int_Tables_number      155
_symmetry_space_group_name_Hall  'R 3 2"'
_symmetry_space_group_name_H-M   'R 3 2 :H'
_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                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            9
_cell_length_a                   35.408(5)
_cell_length_b                   35.408(5)
_cell_length_c                   45.801(9)
_cell_measurement_reflns_used    77893
_cell_measurement_temperature    180(2)
_cell_measurement_theta_max      22.46
_cell_measurement_theta_min      1.02
_cell_volume                     49729(14)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Nonius B.V. 1998)'
_computing_data_reduction
; 
 ? 
;
_computing_publication_material  'SHELXL-97 (Sheldrick 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      180(2)
_diffrn_measured_fraction_theta_full 0.973
_diffrn_measured_fraction_theta_max 0.973
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_diffrn_measurement_method       'Thin slice \w and \f 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  0.0745
_diffrn_reflns_av_sigmaI/netI    0.1154
_diffrn_reflns_limit_h_max       38
_diffrn_reflns_limit_h_min       -38
_diffrn_reflns_limit_k_max       29
_diffrn_reflns_limit_k_min       -38
_diffrn_reflns_limit_l_max       49
_diffrn_reflns_limit_l_min       -49
_diffrn_reflns_number            26431
_diffrn_reflns_theta_full        22.52
_diffrn_reflns_theta_max         22.52
_diffrn_reflns_theta_min         1.11
_exptl_absorpt_coefficient_mu    0.771
_exptl_absorpt_correction_T_max  0.9480
_exptl_absorpt_correction_T_min  0.8305
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;

multi-scan from symmetry-related measurements 
 Sortav (Blessing 1995)

;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.313
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             19656
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.07
_platon_squeeze_details
;
;
_refine_diff_density_max         0.643
_refine_diff_density_min         -0.450
_refine_diff_density_rms         0.098
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.01(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.003
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1116
_refine_ls_number_reflns         13181
_refine_ls_number_restraints     542
_refine_ls_restrained_S_all      0.987
_refine_ls_R_factor_all          0.0712
_refine_ls_R_factor_gt           0.0569
_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^)+(0.0726P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1441
_refine_ls_wR_factor_ref         0.1541
_reflns_number_gt                10788
_reflns_number_total             13181
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja412964r_si_001.cif
_cod_data_source_block           shelxl
_cod_original_cell_volume        49730(14)
_cod_original_sg_symbol_Hall     R32"
_cod_original_sg_symbol_H-M      R32
_cod_database_code               4121437