Two mono- and dinuclear Eu(III) enantiomeric pairs based on chiral bis-bidentate bridging ligands: synthesis, structures, luminescent and ferroelectric properties.
Li, Xi-Li; Gao, Yu-Liang; Feng, Xiang-Li; Zheng, You-Xuan; Chen, Chun-Lai; Zuo, Jing-Lin; Fang, Shao-Ming; Dalton transactions (Cambridge, England : 2003) 41 (2012) 11829–11835; doi:10.1039/c2dt31007d

data_7030149
_publ_section_title
;
 Two mono- and dinuclear Eu(III) enantiomeric pairs based on chiral
 bis-bidentate bridging ligands: synthesis, structures, luminescent and
 ferroelectric properties.
;
_journal_issue                   38
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              11829
_journal_page_last               11835
_journal_paper_doi               10.1039/c2dt31007d
_journal_volume                  41
_journal_year                    2012
_chemical_formula_moiety         'C45 H35 Eu O7'
_chemical_formula_sum            'C45 H35 Eu O7'
_chemical_formula_weight         837.67
_chemical_name_systematic
;
?
;
_space_group_IT_number           146
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  'R 3'
_symmetry_space_group_name_H-M   'R 3 :H'
_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                120.00
_cell_formula_units_Z            3
_cell_length_a                   22.551(3)
_cell_length_b                   22.551(3)
_cell_length_c                   6.3892(15)
_cell_measurement_reflns_used    2042
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      26.283
_cell_measurement_theta_min      3.123
_cell_volume                     2813.9(8)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Bruker, 2000)'
_computing_data_reduction        'SAINT (Bruker, 2000)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Bruker, 2000)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker Smart Aepex CCD'
_diffrn_measurement_method       'phi and omega scans'
_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  0.1029
_diffrn_reflns_av_sigmaI/netI    0.0814
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            5160
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         3.13
_exptl_absorpt_coefficient_mu    1.724
_exptl_absorpt_correction_T_max  0.667
_exptl_absorpt_correction_T_min  0.568
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS; Bruker, 2000'
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.483
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1266
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.765
_refine_diff_density_min         -0.513
_refine_diff_density_rms         0.080
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.07(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.008
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     160
_refine_ls_number_reflns         2276
_refine_ls_number_restraints     7
_refine_ls_restrained_S_all      1.007
_refine_ls_R_factor_all          0.0583
_refine_ls_R_factor_gt           0.0514
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0451P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1072
_refine_ls_wR_factor_ref         0.1108
_reflns_number_gt                1980
_reflns_number_total             2276
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2dt31007d.txt
_cod_data_source_block           Eu(dbm)3H2O
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'TRIGONAL' changed to 'trigonal'
according to
/usr/data/users/saulius/automatic-downloads/retrospective/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_cell_volume        2813.8(9)
_cod_original_sg_symbol_H-M      'R 3'
_cod_database_code               7030149