Macrocycle-based metal ion complexation: a study of the lanthanide contraction effect towards hexacyclohexanocucurbit[6]uil
Qin, Xiao; Ni, Xin-Long; Hu, Jing-Xu; Chen, Kai; Zhang, Yun-Qian; Redshaw, Carl; Zhu, Qian-Jiang; Xue, Sai-Feng; Tao, Zhu; CrystEngComm 15 (2013) 738–; doi:10.1039/c2ce26225h

data_7208922
_publ_section_title
;
 Macrocycle-based metal ion complexation: a study of the lanthanide
 contraction effect towards hexacyclohexanocucurbit[6]uil
;
_journal_issue                   4
_journal_name_full               CrystEngComm
_journal_page_first              738
_journal_paper_doi               10.1039/c2ce26225h
_journal_volume                  15
_journal_year                    2013
_chemical_formula_sum            'C60 H106 Gd N27 O38'
_chemical_formula_weight         1970.97
_chemical_name_systematic
;
?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                74.793(3)
_cell_angle_beta                 89.019(3)
_cell_angle_gamma                63.367(2)
_cell_formula_units_Z            2
_cell_length_a                   15.8697(13)
_cell_length_b                   15.9935(12)
_cell_length_c                   18.2482(14)
_cell_measurement_temperature    223(2)
_cell_volume                     3968.0(5)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      223(2)
_diffrn_measured_fraction_theta_full 0.979
_diffrn_measured_fraction_theta_max 0.979
_diffrn_measurement_device_type  'Bruker CCD Area 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  0.0412
_diffrn_reflns_av_sigmaI/netI    0.0459
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            41537
_diffrn_reflns_theta_full        25.10
_diffrn_reflns_theta_max         25.10
_diffrn_reflns_theta_min         1.16
_exptl_absorpt_coefficient_mu    0.949
_exptl_absorpt_correction_T_max  0.8403
_exptl_absorpt_correction_T_min  0.7771
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker, 2008)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.650
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             2046
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.19
_platon_squeeze_details
;
;
_refine_diff_density_max         1.245
_refine_diff_density_min         -0.885
_refine_diff_density_rms         0.131
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.071
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1018
_refine_ls_number_reflns         13818
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.071
_refine_ls_R_factor_all          0.0563
_refine_ls_R_factor_gt           0.0491
_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^)+(0.0818P)^2^+12.5604P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1385
_refine_ls_wR_factor_ref         0.1499
_reflns_number_gt                12049
_reflns_number_total             13818
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2ce26225h.txt
_cod_data_source_block           p2
_cod_database_code               7208922