Single-Molecule Magnets of Ferrous Cubes: Structurally Controlled Magnetic Anisotropy
Hiroki Oshio; Norihisa Hoshino; Tasuku Ito; Motohiro Nakano; Journal of the American Chemical Society 126 (2004) 8805–8812; doi:10.1021/ja0487933

data_4112770
_publ_section_title
;
 Single-Molecule Magnets of Ferrous Cubes: Structurally Controlled
 Magnetic Anisotropy
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              8805
_journal_page_last               8812
_journal_paper_doi               10.1021/ja0487933
_journal_volume                  126
_journal_year                    2004
_chemical_formula_sum            'C40 H44 Cl8 Fe4 N4 O12'
_chemical_formula_weight         1279.79
_chemical_name_systematic
; 
 [Fe4(3,5-Cl2-sae)4(MeOH)4]  
;
_space_group_IT_number           88
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-I 4ad'
_symmetry_space_group_name_H-M   'I 41/a :2'
_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                   16.5583(9)
_cell_length_b                   16.5583(9)
_cell_length_c                   18.7408(15)
_cell_measurement_temperature    203
_cell_volume                     5138.3(6)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_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  0.0467
_diffrn_reflns_av_sigmaI/netI    0.0496
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            19203
_diffrn_reflns_theta_full        28.06
_diffrn_reflns_theta_max         28.06
_diffrn_reflns_theta_min         1.64
_exptl_absorpt_coefficient_mu    1.583
_exptl_absorpt_correction_T_max  0.927
_exptl_absorpt_correction_T_min  1.000
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            dark_blue
_exptl_crystal_density_diffrn    1.654
_exptl_crystal_description       tablet
_exptl_crystal_F_000             2592
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.433
_refine_diff_density_min         -0.227
_refine_diff_density_rms         0.061
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.845
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     159
_refine_ls_number_reflns         3099
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.845
_refine_ls_R_factor_all          0.0533
_refine_ls_R_factor_gt           0.0296
_refine_ls_shift/su_max          0.062
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0294P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0591
_refine_ls_wR_factor_ref         0.0626
_reflns_number_gt                2071
_reflns_number_total             3099
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja0487933si20040302_072220.cif
_cod_data_source_block           '[Fe4(3,5-Cl2-sae)4(MeOH)4]'
_cod_original_sg_symbol_H-M      'I 41/a'
_cod_database_code               4112770