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_7225420
_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            'C40 H46 Cl2 N26 Nd2 O30'
_chemical_formula_weight         1730.41
_space_group_crystal_system      orthorhombic
_space_group_IT_number           53
_space_group_name_Hall           '-P 2ac 2'
_space_group_name_H-M_alt        'P m n a'
_symmetry_space_group_name_Hall  '-P 2ac 2'
_symmetry_space_group_name_H-M   'P m n a'
_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.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   25.819(15)
_cell_length_b                   10.779(6)
_cell_length_c                   14.304(8)
_cell_measurement_reflns_used    1311
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      21.44
_cell_measurement_theta_min      2.36
_cell_volume                     3981(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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 0.981
_diffrn_measured_fraction_theta_max 0.981
_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  0.0755
_diffrn_reflns_av_unetI/netI     0.0669
_diffrn_reflns_Laue_measured_fraction_full 0.981
_diffrn_reflns_Laue_measured_fraction_max 0.981
_diffrn_reflns_limit_h_max       29
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            14037
_diffrn_reflns_point_group_measured_fraction_full 0.981
_diffrn_reflns_point_group_measured_fraction_max 0.981
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.249
_diffrn_reflns_theta_min         1.628
_exptl_absorpt_coefficient_mu    1.443
_exptl_absorpt_correction_T_max  0.735
_exptl_absorpt_correction_T_min  0.652
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.444
_exptl_crystal_description       block
_exptl_crystal_F_000             1724
_exptl_crystal_size_max          0.270
_exptl_crystal_size_mid          0.230
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_platon_squeeze_details
;
;
_refine_diff_density_max         1.992
_refine_diff_density_min         -0.722
_refine_diff_density_rms         0.209
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
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_refine_ls_number_restraints     21
_refine_ls_restrained_S_all      1.075
_refine_ls_R_factor_all          0.1303
_refine_ls_R_factor_gt           0.0894
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1918P)^2^+21.0285P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2810
_refine_ls_wR_factor_ref         0.3194
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2304
_reflns_number_total             3634
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6ce00134c2.cif
_cod_data_source_block           4pp
_cod_depositor_comments
'Adding full bibliography for 7225407--7225427.cif.'
_cod_database_code               7225420
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.697
_shelx_estimated_absorpt_t_max   0.771
_shelx_res_checksum              32281