Ferromagnetic and Antiferromagnetic Intermolecular Interactions in a New Family of Mn4 Complexes with an Energy Barrier to Magnetization Reversal
Colette Boskovic; Roland Bircher; Philip L. W. Tregenna-Piggott; Hans U. Güdel; Carley Paulsen; Wolfgang Wernsdorfer; Anne-Laure Barra; Eugene Khatsko; Antonia Neels; Helen Stoeckli-Evans; Journal of the American Chemical Society 125 (2003) 14046–14058; doi:10.1021/ja0367086

data_4114351
_publ_section_title
;
 Ferromagnetic and Antiferromagnetic Intermolecular Interactions in a New
 Family of Mn4 Complexes with an Energy Barrier to Magnetization Reversal
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              14046
_journal_page_last               14058
_journal_paper_doi               10.1021/ja0367086
_journal_volume                  125
_journal_year                    2003
_chemical_formula_moiety         'C52 H68 Cl4 Mn4 N4 O8'
_chemical_formula_sum            'C52 H68 Cl4 Mn4 N4 O8'
_chemical_formula_weight         1238.66
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           82
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'I -4'
_symmetry_space_group_name_H-M   'I -4'
_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            2
_cell_length_a                   15.8213(8)
_cell_length_b                   15.8213(8)
_cell_length_c                   11.4105(6)
_cell_measurement_reflns_used    17214
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      29.51
_cell_measurement_theta_min      1.82
_cell_volume                     2856.2(3)
_computing_cell_refinement       'CELL (Stoe IPDS Software, 2000)'
_computing_data_collection       'EXPOSE (Stoe IPDS Software, 2000)'
_computing_data_reduction        'INTEGRATE (Stoe IPDS Software, 2000)'
_computing_molecular_graphics    'PLATON99 (Spek, 1990)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      153(2)
_diffrn_detector_area_resol_mean 0.716\%A
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'STOE IPDS'
_diffrn_measurement_method       'omega oscillation'
_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  0.0321
_diffrn_reflns_av_sigmaI/netI    0.0222
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            13058
_diffrn_reflns_theta_full        29.51
_diffrn_reflns_theta_max         29.51
_diffrn_reflns_theta_min         1.82
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.104
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            dark_red
_exptl_crystal_density_diffrn    1.440
_exptl_crystal_density_meas      ?
_exptl_crystal_description       block
_exptl_crystal_F_000             1280
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.341
_refine_diff_density_min         -0.464
_refine_diff_density_rms         0.057
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.01(2)
_refine_ls_extinction_coef       0.0046(6)
_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   1.045
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     164
_refine_ls_number_reflns         3963
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0363
_refine_ls_R_factor_gt           0.0333
_refine_ls_shift/su_max          <0.001
_refine_ls_shift/su_mean         <0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0554P)^2^+1.8854P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0896
_refine_ls_wR_factor_ref         0.0918
_reflns_number_gt                3705
_reflns_number_total             3963
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            ja0367086si20030616_010427.cif
_cod_data_source_block           cpd3
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'none' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_database_code               4114351