A Family of 3d-4f Octa-Nuclear [MnIII4LnIII4] Wheels (Ln = Sm, Gd, Tb, Dy, Ho, Er, and Y): Synthesis, Structure, and Magnetism
Mengyuan Li; Yanhua Lan; Ayuk M. Ako; Wolfgang Wernsdorfer; Christopher E. Anson; Gernot Buth; Annie K. Powell; Zheming Wang; Song Gao; Inorganic Chemistry 49 (2010) 11587–11594; doi:10.1021/ic101754g

data_4317346
_publ_section_title
;
 A Family of 3d-4f Octa-Nuclear [MnIII4LnIII4] Wheels (Ln = Sm, Gd, Tb,
 Dy, Ho, Er, and Y): Synthesis, Structure, and Magnetism
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              11587
_journal_page_last               11594
_journal_paper_doi               10.1021/ic101754g
_journal_volume                  49
_journal_year                    2010
_chemical_formula_sum            'C68 H140 Gd4 Mn4 N4 O40'
_chemical_formula_weight         2502.60
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 126.379(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   40.1279(15)
_cell_length_b                   8.7486(3)
_cell_length_c                   33.6560(12)
_cell_measurement_reflns_used    12314
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.54
_cell_measurement_theta_min      1.82
_cell_volume                     9512.7(6)
_computing_cell_refinement       'X-Area 1.38 (Stoe & Cie GmbH, 2006)'
_computing_data_collection       'WinXpose 1.6.8 (Stoe & Cie GmbH, 2004)'
_computing_data_reduction        'X-Area 1.38 (Stoe & Cie GmbH, 2006)'
_computing_molecular_graphics    'Diamond 2.1 (Crystal Impact, 1998)'
_computing_publication_material  'SHELXTL 6.14 (BrukerAXS Inc., 2003)'
_computing_structure_refinement  'SHELXTL 6.14 (BrukerAXS Inc., 2003)'
_computing_structure_solution    'SHELXTL 6.14 (BrukerAXS Inc., 2003)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 6.667
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device_type  'Stoe IPDS II'
_diffrn_measurement_method       'area detector'
_diffrn_radiation_monochromator  silicon
_diffrn_radiation_source         synchrotron
_diffrn_radiation_type           synchrotron
_diffrn_radiation_wavelength     0.80000
_diffrn_reflns_av_R_equivalents  0.1131
_diffrn_reflns_av_sigmaI/netI    0.0757
_diffrn_reflns_limit_h_max       49
_diffrn_reflns_limit_h_min       -49
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       40
_diffrn_reflns_limit_l_min       -41
_diffrn_reflns_number            27714
_diffrn_reflns_theta_full        29.00
_diffrn_reflns_theta_max         29.93
_diffrn_reflns_theta_min         1.69
_diffrn_standards_decay_%        none
_exptl_absorpt_coefficient_mu    4.582
_exptl_absorpt_correction_T_max  0.967
_exptl_absorpt_correction_T_min  0.545
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
XPREP in SHELXTL 6.14 (BrukerAXS Inc., 2003)
;
_exptl_crystal_colour            pinkish-brown
_exptl_crystal_density_diffrn    1.747
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             5008
_exptl_crystal_size_max          0.13
_exptl_crystal_size_mid          0.02
_exptl_crystal_size_min          0.01
_refine_diff_density_max         4.288
_refine_diff_density_min         -2.284
_refine_diff_density_rms         0.222
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.115
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     549
_refine_ls_number_reflns         9496
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.115
_refine_ls_R_factor_all          0.0757
_refine_ls_R_factor_gt           0.0658
_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^)+(0.1346P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1949
_refine_ls_wR_factor_ref         0.2059
_reflns_number_gt                7945
_reflns_number_total             9496
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic101754g_si_001_2.cif
_cod_data_source_block           2Gd-CCDC-752002
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               4317346