[CdCl4]2− anion-induced coordination of Ln3+ to cucurbit[8]uril and the formation of supramolecular self-assemblies: potential application in isolation of light lanthanides
Cheng, Xiao-Jie; Ji, Ning-Ning; Zhao, Yi; Liang, Li-Li; Xiao, Xin; Zhang, Yun-Qian; Xue, Sai-Feng; Zhu, Qian-Jiang; Tao, Zhu; CrystEngComm 16 (2014) 144–; doi:10.1039/c3ce41769g

data_7213559
_publ_section_title
;
 [CdCl4]2&#x2212; anion-induced coordination of Ln3+ to cucurbit[8]uril
 and the formation of supramolecular self-assemblies: potential
 application in isolation of light lanthanides
;
_journal_issue                   2
_journal_name_full               CrystEngComm
_journal_page_first              144
_journal_paper_doi               10.1039/c3ce41769g
_journal_volume                  16
_journal_year                    2014
_chemical_formula_sum            'C96 H241 Cl4 Er N64 O104'
_chemical_formula_weight         4265.59
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           88
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-I 4ad'
_symmetry_space_group_name_H-M   'I 41/a :2'
_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                   28.440(3)
_cell_length_b                   28.440(3)
_cell_length_c                   22.010(5)
_cell_measurement_temperature    223(2)
_cell_volume                     17802(5)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      223(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_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  0.0874
_diffrn_reflns_av_sigmaI/netI    0.0783
_diffrn_reflns_limit_h_max       35
_diffrn_reflns_limit_h_min       -32
_diffrn_reflns_limit_k_max       35
_diffrn_reflns_limit_k_min       -30
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            62053
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         1.17
_exptl_absorpt_coefficient_mu    0.658
_exptl_absorpt_correction_T_max  0.9193
_exptl_absorpt_correction_T_min  0.8741
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker, 2008)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.591
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             8932
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.13
_platon_squeeze_details
;
;
_refine_diff_density_max         0.644
_refine_diff_density_min         -0.520
_refine_diff_density_rms         0.068
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.944
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     480
_refine_ls_number_reflns         8683
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.944
_refine_ls_R_factor_all          0.1363
_refine_ls_R_factor_gt           0.0752
_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^)+(0.1327P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2098
_refine_ls_wR_factor_ref         0.2323
_reflns_number_gt                4206
_reflns_number_total             8683
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3ce41769g.txt
_cod_data_source_block           complex8
_cod_original_cell_volume        17803(5)
_cod_original_sg_symbol_H-M      'I 41/a'
_cod_database_code               7213559