Inducing Single-Molecule Magnetism in a Family of Loop-of-Loops Aggregates: Heterometallic Mn40Na4 Clusters and the Homometallic Mn44 Analogue
Eleni E. Moushi; Christos Lampropoulos; Wolfgang Wernsdorfer; Vassilios Nastopoulos; George Christou; Anastasios J. Tasiopoulos; Journal of the American Chemical Society 132 (2010) 16146–16155; doi:10.1021/ja106666h

data_4103513
_publ_section_title
;
 Inducing Single-Molecule Magnetism in a Family of Loop-of-Loops
 Aggregates: Heterometallic Mn40Na4 Clusters and the Homometallic Mn44
 Analogue
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              16146
_journal_page_last               16155
_journal_paper_doi               10.1021/ja106666h
_journal_volume                  132
_journal_year                    2010
_chemical_formula_moiety         'C216 H340 Mn40 N8 Na4 O160, 10(C H2 Cl2)'
_chemical_formula_sum            'C226 H360 Cl20 Mn40 N8 Na4 O160'
_chemical_formula_weight         8747.80
_space_group_IT_number           114
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P -4 2n'
_symmetry_space_group_name_H-M   'P -4 21 c'
_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                   25.8279(4)
_cell_length_b                   25.8279(4)
_cell_length_c                   33.8254(11)
_cell_measurement_reflns_used    17545
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.5703
_cell_measurement_theta_min      2.9789
_cell_volume                     22564.3(9)
_computing_cell_refinement       'CrysAlis RED (Oxford Diffraction, 2006)'
_computing_data_collection       'CrysAlis CCD (Oxford Diffraction, 2006)'
_computing_data_reduction        'CrysAlis RED (Oxford Diffraction, 2006)'
_computing_molecular_graphics
' PLATON (Spek, 1990); MERCURY (Bruno et al. 2002)'
_computing_publication_material  'WINGX (Farrugia, 1999'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 16.0288
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type
'Oxford Diffraction Xcalibur-3 with Sapphire CCD'
_diffrn_measurement_method       '\w/\f scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1147
_diffrn_reflns_av_sigmaI/netI    0.2195
_diffrn_reflns_limit_h_max       30
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       30
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -40
_diffrn_reflns_number            110631
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.99
_exptl_absorpt_coefficient_mu    1.268
_exptl_absorpt_correction_T_max  0.8780
_exptl_absorpt_correction_T_min  0.7492
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'empirical absorption correction (CrysAlis RED, Oxford Diffraction)'
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.288
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             8872
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.10
_refine_diff_density_max         1.333
_refine_diff_density_min         -0.395
_refine_diff_density_rms         0.106
_refine_ls_abs_structure_details
'Flack H D (1983), Acta Cryst. A39, 876-881, 9249 Friedel pairs'
_refine_ls_abs_structure_Flack   0.00(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.961
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1085
_refine_ls_number_reflns         19799
_refine_ls_number_restraints     233
_refine_ls_restrained_S_all      0.970
_refine_ls_R_factor_all          0.1591
_refine_ls_R_factor_gt           0.0679
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0692P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1517
_refine_ls_wR_factor_ref         0.1667
_reflns_number_gt                7614
_reflns_number_total             19799
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            ja106666h_si_003.cif
_cod_data_source_block           mx291
_cod_database_code               4103513