Coordination of Ln3+in ortho-tetramethyl-substituted cucurbituril supramolecular assemblies formed in the presence of cadmium nitrate: potential applications for isolation of heavier lanthanides
Zhou, Jia-Jia; Yu, Xin; Zhao, Ying-Chun; Xiao, Xin; Zhang, Yun-Qian; Xue, Sai-Feng; Tao, Zhu; Liu, Jing-Xin; Zhu, Qian-Jiang; CrystEngComm 16 (2014) 10674–; doi:10.1039/C4CE00870G

data_7218543
_publ_section_title
;
 Coordination of Ln3+in ortho-tetramethyl-substituted cucurbituril
 supramolecular assemblies formed in the presence of cadmium nitrate:
 potential applications for isolation of heavier lanthanides
;
_journal_issue                   46
_journal_name_full               CrystEngComm
_journal_page_first              10674
_journal_paper_doi               10.1039/C4CE00870G
_journal_volume                  16
_journal_year                    2014
_chemical_formula_moiety         'C40 H54 N25 Sm O20, N O3, Cl, 6(H2 O)'
_chemical_formula_sum            'C40 H66 Cl N26 O29 Sm'
_chemical_formula_weight         1560.99
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P -2n -2ac'
_symmetry_space_group_name_H-M   'P c 21 n'
_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                   14.6418(17)
_cell_length_b                   17.407(2)
_cell_length_c                   23.369(3)
_cell_measurement_temperature    293(2)
_cell_volume                     5956.1(12)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(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  0.0482
_diffrn_reflns_av_sigmaI/netI    0.0548
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            36773
_diffrn_reflns_theta_full        25.10
_diffrn_reflns_theta_max         25.10
_diffrn_reflns_theta_min         1.64
_exptl_absorpt_coefficient_mu    1.144
_exptl_absorpt_correction_T_max  0.7709
_exptl_absorpt_correction_T_min  0.7327
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker, 2008)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.741
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             3196
_exptl_crystal_size_max          0.29
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.24
_platon_squeeze_details
;
;
_refine_diff_density_max         1.569
_refine_diff_density_min         -0.609
_refine_diff_density_rms         0.102
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.104(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     831
_refine_ls_number_reflns         10279
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.0536
_refine_ls_R_factor_gt           0.0458
_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^)+(0.0830P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1248
_refine_ls_wR_factor_ref         0.1305
_reflns_number_gt                8731
_reflns_number_total             10279
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4ce00870g2.cif
_cod_data_source_block           06Sm
_cod_depositor_comments
'Adding full bibliography for 7218542--7218552.cif.'
_cod_original_cell_volume        5956.0(12)
_cod_database_code               7218543