κ²-Coordination of 18-crown-6 to Ce(III) cations: solution dynamics and reactivity.
Yin, Haolin; Robinson, Jerome R.; Carroll, Patrick J.; Walsh, Patrick J.; Schelter, Eric J.; Chemical communications (Cambridge, England) 50 (2014) 3470–3472; doi:10.1039/c4cc00448e

data_7124554
_publ_section_title
;
 \k&#x00B2;-Coordination of 18-crown-6 to Ce(III) cations: solution
 dynamics and reactivity.
;
_journal_issue                   26
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              3470
_journal_page_last               3472
_journal_paper_doi               10.1039/c4cc00448e
_journal_volume                  50
_journal_year                    2014
_chemical_formula_sum            'C70 H86 Ce2 F30 N6 O7 Si6'
_chemical_formula_weight         2142.23
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 95.641(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.1930(16)
_cell_length_b                   18.164(3)
_cell_length_c                   40.779(6)
_cell_measurement_temperature    100(1)
_cell_volume                     8988(2)
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(1)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device       'CCD Area Detector'
_diffrn_measurement_device_type  'Bruker APEXII'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0289
_diffrn_reflns_av_sigmaI/netI    0.0190
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       52
_diffrn_reflns_limit_l_min       -47
_diffrn_reflns_number            131989
_diffrn_reflns_theta_full        27.51
_diffrn_reflns_theta_max         27.51
_diffrn_reflns_theta_min         1.50
_exptl_absorpt_coefficient_mu    1.193
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6804
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 2007)'
_exptl_crystal_density_diffrn    1.583
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             4296
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_refine_diff_density_max         1.060
_refine_diff_density_min         -1.845
_refine_diff_density_rms         0.089
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.181
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1142
_refine_ls_number_reflns         20569
_refine_ls_number_restraints     88
_refine_ls_restrained_S_all      1.185
_refine_ls_R_factor_all          0.0448
_refine_ls_R_factor_gt           0.0410
_refine_ls_shift/su_max          0.032
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0148P)^2^+30.0972P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0891
_refine_ls_wR_factor_ref         0.0904
_reflns_number_gt                18864
_reflns_number_total             20569
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4cc00448e2.cif
_cod_data_source_block           cmpd3
_cod_original_sg_symbol_H-M      'P 21/c     '
_cod_database_code               7124554