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_7030152
_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_absolute_configuration syn
_chemical_formula_moiety         'C73 H63 Eu N4 O6, 2(H2 O)'
_chemical_formula_sum            'C73 H67 Eu N4 O8'
_chemical_formula_weight         1280.27
_chemical_name_systematic
;
?
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                   17.207(3)
_cell_length_b                   18.244(8)
_cell_length_c                   21.772(5)
_cell_measurement_reflns_used    4137
_cell_measurement_temperature    291(2)
_cell_measurement_theta_max      23.19
_cell_measurement_theta_min      2.11
_cell_volume                     6835(4)
_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      291(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker Smart Aepex CCD'
_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  0.0357
_diffrn_reflns_av_sigmaI/netI    0.0659
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            20664
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         3.02
_exptl_absorpt_coefficient_mu    0.973
_exptl_absorpt_correction_T_max  0.82
_exptl_absorpt_correction_T_min  0.77
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS; bruker, 2000'
_exptl_crystal_colour            pale-red
_exptl_crystal_density_diffrn    1.244
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2640
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.953
_refine_diff_density_min         -0.875
_refine_diff_density_rms         0.071
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.095(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           fullcycle
_refine_ls_number_parameters     816
_refine_ls_number_reflns         12713
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.041
_refine_ls_R_factor_all          0.0567
_refine_ls_R_factor_gt           0.0463
_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^)+(0.05P)^2^+1.99P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0970
_refine_ls_wR_factor_ref         0.0991
_reflns_number_gt                10395
_reflns_number_total             12713
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2dt31007d.txt
_cod_data_source_block           R-1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' 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_sg_symbol_H-M      'P 21 21 21 '
_cod_database_code               7030152