Interaction of a symmetrical α,α′,δ,δ′-tetramethyl-cucurbit[6]uril with Ln3+: potential applications for isolation of lanthanides
Yang, Bo; Gao, Zhong-Zheng; Lu, Ji-Hong; Zhu, Qian-Jiang; Xue, Sai-Feng; Tao, Zhu; Prior, Timothy J.; Redshaw, Carl; Wei, Gang; Xiao, Xin; CrystEngComm 18 (2016) 5028–; doi:10.1039/C6CE00134C

data_7225418
_publ_section_title
;
 Interaction of a symmetrical
 \a,\a&#x2032;,\d,\d&#x2032;-tetramethyl-cucurbit[6]uril with Ln3+:
 potential applications for isolation of lanthanides
;
_journal_issue                   26
_journal_name_full               CrystEngComm
_journal_page_first              5028
_journal_paper_doi               10.1039/C6CE00134C
_journal_volume                  18
_journal_year                    2016
_chemical_formula_sum            'C120 H132 N76 O56 Pr2'
_chemical_formula_weight         3816.83
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2016-05-31 deposited with the CCDC.
2016-06-02 downloaded from the CCDC.
;
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_cell_angle_gamma                90
_cell_formula_units_Z            2
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_cell_length_b                   17.145(9)
_cell_length_c                   35.161(19)
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_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      19.98
_cell_measurement_theta_min      2.32
_cell_volume                     9332(9)
_computing_cell_refinement       'Bruker SMART'
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_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0806
_diffrn_reflns_av_unetI/netI     0.0893
_diffrn_reflns_Laue_measured_fraction_full 0.989
_diffrn_reflns_Laue_measured_fraction_max 0.989
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_diffrn_reflns_limit_k_min       -20
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_diffrn_reflns_limit_l_min       -41
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_diffrn_reflns_point_group_measured_fraction_full 0.989
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_exptl_absorpt_correction_T_max  0.877
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_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
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_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0664P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1202
_refine_ls_wR_factor_ref         0.1394
_reflns_Friedel_coverage         0.000
_reflns_number_gt                9843
_reflns_number_total             16726
_reflns_threshold_expression     'I > 2\s(I)'
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_cod_data_source_block           3p
_cod_depositor_comments
'Adding full bibliography for 7225407--7225427.cif.'
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_shelx_estimated_absorpt_t_min   0.852
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_shelx_res_checksum              98677
_shelx_fab_checksum              91385