Series of dinuclear and tetranuclear lanthanide clusters encapsulated by salen-type and β-diketionate ligands: single-molecule magnet and fluorescence properties.
Sun, Wen-Bin; Han, Bing-Lu; Lin, Po-Heng; Li, Hong-Feng; Chen, Peng; Tian, Yong-Mei; Murugesu, Muralee; Yan, Peng-Fei; Dalton transactions (Cambridge, England : 2003) 42 (2013) 13397–13403; doi:10.1039/c3dt51227d

data_7021832
_publ_section_title
;
 Series of dinuclear and tetranuclear lanthanide clusters encapsulated by
 salen-type and \b-diketionate ligands: single-molecule magnet and
 fluorescence properties.
;
_journal_issue                   37
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              13397
_journal_page_last               13403
_journal_paper_doi               10.1039/c3dt51227d
_journal_volume                  42
_journal_year                    2013
_chemical_formula_sum            'C54 H53 Er2 N4 O10'
_chemical_formula_weight         1252.52
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_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                 90.722(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.0195(15)
_cell_length_b                   19.6394(18)
_cell_length_c                   16.2270(15)
_cell_measurement_reflns_used    4324
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      23.79
_cell_measurement_theta_min      2.4
_cell_volume                     5104.8(8)
_computing_cell_refinement       'SAINT (Bruker, 2007)'
_computing_data_collection       'APEX 2 (Bruker, 2007)'
_computing_data_reduction        SAINT-plus
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_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  0.0693
_diffrn_reflns_av_sigmaI/netI    0.0830
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            37184
_diffrn_reflns_theta_full        28.35
_diffrn_reflns_theta_max         28.35
_diffrn_reflns_theta_min         1.63
_exptl_absorpt_coefficient_mu    3.327
_exptl_absorpt_correction_T_max  0.5858
_exptl_absorpt_correction_T_min  0.4901
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.630
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2484
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.18
_refine_diff_density_max         1.890
_refine_diff_density_min         -2.360
_refine_diff_density_rms         0.175
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.966
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     634
_refine_ls_number_reflns         12704
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      0.966
_refine_ls_R_factor_all          0.0978
_refine_ls_R_factor_gt           0.0514
_refine_ls_shift/su_max          0.009
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0726P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1198
_refine_ls_wR_factor_ref         0.1482
_reflns_number_gt                7650
_reflns_number_total             12704
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3dt51227d.txt
_cod_data_source_block           zt1
_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               7021832