Assessing the exchange coupling in binuclear lanthanide(iii) complexes and the slow relaxation of the magnetization in the antiferromagnetically coupled Dy2derivative
Chow, Chun Y.; Bolvin, Hélène; Campbell, Victoria E.; Guillot, Régis; Kampf, Jeff W.; Wernsdorfer, Wolfgang; Gendron, Frédéric; Autschbach, Jochen; Pecoraro, Vincent L.; Mallah, Talal; Chem. Sci. 6 (2015) 4148–; doi:10.1039/C5SC01029B

data_1519402
_publ_section_title
;
 Assessing the exchange coupling in binuclear lanthanide(iii) complexes
 and the slow relaxation of the magnetization in the antiferromagnetically
 coupled Dy2derivative
;
_journal_issue                   7
_journal_name_full               'Chem. Sci.'
_journal_page_first              4148
_journal_paper_doi               10.1039/C5SC01029B
_journal_volume                  6
_journal_year                    2015
_chemical_formula_moiety         'C50 H50 Dy Ga4 N20 O20'
_chemical_formula_sum            'C94 H93 Dy2 Ga4 N15 O31'
_chemical_formula_weight         2532.71
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2014-08-22 deposited with the CCDC.
2015-05-06 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 99.353(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   25.1638(18)
_cell_length_b                   22.1781(4)
_cell_length_c                   18.0649(3)
_cell_measurement_reflns_used    64196
_cell_measurement_temperature    85(2)
_cell_measurement_theta_max      68.40
_cell_measurement_theta_min      2.50
_cell_volume                     9947.7(8)
_computing_cell_refinement       'CrystalClear-SM Expert 2.0 r12'
_computing_data_collection
'CrystalClear-SM Expert 2.0 r12 (Rigaku, 2011)'
_computing_data_reduction        'CrystalClear-SM Expert 2.0 r12'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      85(2)
_diffrn_detector_area_resol_mean 29.257
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Rigaku Saturn944+ CCD'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  confocal
_diffrn_radiation_source         'micro-focus rotating anode'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.1273
_diffrn_reflns_av_sigmaI/netI    0.0564
_diffrn_reflns_limit_h_max       29
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            133023
_diffrn_reflns_theta_full        68.23
_diffrn_reflns_theta_max         68.23
_diffrn_reflns_theta_min         3.44
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    9.839
_exptl_absorpt_correction_T_max  0.712
_exptl_absorpt_correction_T_min  0.510
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
    Higashi, T. (1995). Program for Absorption Correction.
    Rigaku Corporation, Tokyo, Japan.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.691
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             5063
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.03
_exptl_crystal_size_min          0.03
_refine_diff_density_max         1.792
_refine_diff_density_min         -1.514
_refine_diff_density_rms         0.140
_refine_ls_extinction_coef       0.000077(12)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.031
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     746
_refine_ls_number_reflns         9072
_refine_ls_number_restraints     92
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.0627
_refine_ls_R_factor_gt           0.0572
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1103P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1545
_refine_ls_wR_factor_ref         0.1591
_reflns_number_gt                7721
_reflns_number_total             9072
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5sc01029b2.cif
_cod_data_source_block           3-Ga4Dy2
_cod_depositor_comments
'Adding full bibliography for 1519400--1519404.cif.'
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               1519402