[CdCl4]2- anion-induced coordination of alkaline earth metal ions to cucurbit[7]uril, corresponding supramolecular self-assemblies and potential application.
Zhao, Yi; Liang, Li-Li; Chen, Kai; Ji, Ning-Ning; Cheng, Xiao-Jie; Xiao, Xin; Zhang, Yun-Qian; Xue, Sai-Feng; Zhu, Qian-Jiang; Dong, Nan; Tao, Zhu; Dalton transactions (Cambridge, England : 2003) 43 (2014) 929–932; doi:10.1039/c3dt52213j

data_7028643
_publ_section_title
;
 [CdCl4]2- anion-induced coordination of alkaline earth metal ions to
 cucurbit[7]uril, corresponding supramolecular self-assemblies and
 potential application.
;
_journal_issue                   3
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              929
_journal_page_last               932
_journal_paper_doi               10.1039/c3dt52213j
_journal_volume                  43
_journal_year                    2014
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C42 H50 Ca2 N28 O18, 2(Cd Cl2), 22(H2 O)'
_chemical_formula_sum            'C42 H94 Ca2 Cd2 Cl8 N28 O40'
_chemical_formula_weight         2220.01
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                90.00
_cell_formula_units_Z            4
_cell_length_a                   17.070(3)
_cell_length_b                   17.240(3)
_cell_length_c                   28.560(5)
_cell_measurement_temperature    223(2)
_cell_volume                     8405(3)
_computing_cell_refinement       'SAINT (Bruker, 2005)'
_computing_data_collection       'APEX2 (Bruker, 2005)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      223(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker Smart Apex2 CCD Detector'
_diffrn_measurement_method       '\f and \w scan'
_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  0.0886
_diffrn_reflns_av_sigmaI/netI    0.1271
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            38726
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.38
_exptl_absorpt_coefficient_mu    0.988
_exptl_absorpt_correction_T_max  0.8345
_exptl_absorpt_correction_T_min  0.7763
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker, 2008)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.754
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             4536
_exptl_crystal_size_max          0.27
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.19
_platon_squeeze_details
;
;
_refine_diff_density_max         0.537
_refine_diff_density_min         -0.836
_refine_diff_density_rms         0.088
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.00
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.891
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     911
_refine_ls_number_reflns         14725
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.891
_refine_ls_R_factor_all          0.1056
_refine_ls_R_factor_gt           0.0593
_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^)+(0.0728P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1403
_refine_ls_wR_factor_ref         0.1583
_reflns_number_gt                7922
_reflns_number_total             14725
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3dt52213j.txt
_cod_data_source_block           complex2
_cod_original_cell_volume        8405(2)
_cod_database_code               7028643