Endo/exo binding of alkyl and aryl diammonium ions by cyclopentanocucurbit[6]uril
Qu, Yun-Xia; Lin, Rui-Lian; Zhang, Yun-Qian; Zhou, Kai-Zhi; Zhou, Qing-Di; Zhu, Qian-Jiang; Tao, Zhu; Ma, Pei-Hua; Liu, Jing-Xin; Wei, Gang; Organic Chemistry Frontiers 4 (2017) 1799–; doi:10.1039/C7QO00376E

data_1553809
_publ_section_title
;
 &#x000D; Endo/exo binding of alkyl and aryl diammonium ions by
 cyclopentanocucurbit[6]uril
;
_journal_issue                   9
_journal_name_full               'Organic Chemistry Frontiers'
_journal_page_first              1799
_journal_paper_doi               10.1039/C7QO00376E
_journal_volume                  4
_journal_year                    2017
_chemical_formula_sum            'C60 H68 Cl8 N26 O28 Zn2'
_chemical_formula_weight         2015.74
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2016-10-25 deposited with the CCDC.
2017-06-21 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 94.006(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   27.520(3)
_cell_length_b                   17.250(3)
_cell_length_c                   18.358(3)
_cell_measurement_temperature    293(2)
_cell_volume                     8694(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0468
_diffrn_reflns_av_sigmaI/netI    0.0557
_diffrn_reflns_limit_h_max       32
_diffrn_reflns_limit_h_min       -32
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            28016
_diffrn_reflns_theta_full        25.10
_diffrn_reflns_theta_max         25.10
_diffrn_reflns_theta_min         1.39
_exptl_absorpt_coefficient_mu    0.888
_exptl_crystal_density_diffrn    1.540
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             4120
_refine_diff_density_max         0.696
_refine_diff_density_min         -0.797
_refine_diff_density_rms         0.070
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.079
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     487
_refine_ls_number_reflns         7734
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.079
_refine_ls_R_factor_all          0.1071
_refine_ls_R_factor_gt           0.0703
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1283P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2108
_refine_ls_wR_factor_ref         0.2315
_reflns_number_gt                4475
_reflns_number_total             7734
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c7qo00376e2.cif
_cod_data_source_block           p
_cod_database_code               1553809