Preparation, Crystal Structures, and Magnetic Features for a Series of Dinuclear [NiIILnIII] Schiff-Base Complexes: Evidence for Slow Relaxation of the Magnetization for the DyIII Derivative
Traian D. Pasatoiu; Jean-Pascal Sutter; Augustin M. Madalan; Fatima Zohra Chiboub Fellah; Carine Duhayon; Marius Andruh; Inorganic Chemistry 50 (2011) 5890–5898; doi:10.1021/ic2004276

data_4325515
_publ_contact_author_email       'jean-pascal.sutter@lcc-toulouse.fr '
_publ_contact_author_fax         '(33) 5 61 55 30 03'
_publ_contact_author_name        'JP Sutter'
_publ_contact_author_phone       '(33) 5 61 33 31 57'
_publ_section_title
;
 Preparation, Crystal Structures, and Magnetic Features for a Series of
 Dinuclear [NiIILnIII] Schiff-Base Complexes: Evidence for Slow Relaxation
 of the Magnetization for the DyIII Derivative
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              5890
_journal_page_last               5898
_journal_paper_doi               10.1021/ic2004276
_journal_volume                  50
_journal_year                    2011
_chemical_formula_moiety         'C38 H50 N6 Ni2 O20 Yb2, 2(N O3), 4(H2 O)'
_chemical_formula_sum            'C38 H58 N8 Ni2 O30 Yb2'
_chemical_formula_weight         1570.41
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             09-10-06
_audit_creation_method           CRYSTALS_ver_12.86
_cell_angle_alpha                90
_cell_angle_beta                 108.659(2)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   11.1489(4)
_cell_length_b                   17.1833(7)
_cell_length_c                   15.3045(7)
_cell_measurement_reflns_used    9952
_cell_measurement_temperature    180
_cell_measurement_theta_max      35
_cell_measurement_theta_min      3
_cell_volume                     2777.9(2)
_computing_cell_refinement       'Apex2 (Bruker AXS, 2006)'
_computing_data_collection       'Apex2 (Bruker AXS, 2006)'
_computing_data_reduction        'Apex2 (Bruker AXS, 2006)'
_computing_molecular_graphics    'CAMERON (Watkin et al., 1996)'
_computing_publication_material  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      180
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.930
_diffrn_measurement_device       'Bruker Kappa Apex2'
_diffrn_measurement_device_type  Area
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.037
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            46840
_diffrn_reflns_theta_full        29.120
_diffrn_reflns_theta_max         36.400
_diffrn_reflns_theta_min         1.838
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    4.100
_exptl_absorpt_correction_T_max  0.66
_exptl_absorpt_correction_T_min  0.39
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Blessing, acta cryst. (1995), a51, 33-38'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.877
_exptl_crystal_description       planar
_exptl_crystal_F_000             1556
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         2.06
_refine_diff_density_min         -0.79
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.0856
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     361
_refine_ls_number_reflns         8512
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0578
_refine_ls_R_factor_gt           0.0334
_refine_ls_shift/su_max          0.000994
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details
;
 Method, part 1, Chebychev polynomial, (Watkin, 1994, Prince, 1982) 
 [weight] = 1.0/[A~0~*T~0~(x)+A~1~*T~1~(x) ... +A~n-1~]*T~n-1~(x)] 
 where A~i~ are the Chebychev coefficients listed below and x= Fcalc/Fmax 
 Method = Robust Weighting (Prince, 1982) 
 W = [weight] * [1-(deltaF/6*sigmaF)^2^]^2^ 
 A~i~ are: 
 0.316 0.105 0.123 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0578
_refine_ls_wR_factor_gt          0.0333
_refine_ls_wR_factor_ref         0.0318
_reflns_limit_h_max              17
_reflns_limit_h_min              -18
_reflns_limit_k_max              27
_reflns_limit_k_min              0
_reflns_limit_l_max              25
_reflns_limit_l_min              0
_reflns_number_gt                9116
_reflns_number_total             12599
_reflns_threshold_expression     I>2.0\s(I)
_oxford_refine_ls_r_factor_ref   0.0307
_oxford_reflns_number_all        12575
_oxford_reflns_threshold_expression_ref I>3.0\s(I)
_oxford_structure_analysis_title 'jps0920_0m in P2(1)/c'
_cod_data_source_file            ic2004276_si_011.cif
_cod_data_source_block           cpd13
_cod_original_sg_symbol_Hall     '-P 2ybc '
_cod_original_sg_symbol_H-M      'P 1 21/c 1 '
_cod_database_code               4325515