Iron(iii) carboxylate/aminoalcohol coordination clusters with propeller-shaped Fe8 cores: approaching reasonable exchange energies.
Botezat, Olga; van Leusen, Jan; Ch Kravtsov, Victor; Ellern, Arkady; Kögerler, Paul; Baca, Svetlana G.; Dalton transactions (Cambridge, England : 2003) 44 (2015) 20753–20762; doi:10.1039/c5dt03024b

data_7037076
_publ_section_title
;
 Iron(iii) carboxylate/aminoalcohol coordination clusters with
 propeller-shaped Fe8 cores: approaching reasonable exchange energies.
;
_journal_issue                   47
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              20753
_journal_page_last               20762
_journal_paper_doi               10.1039/c5dt03024b
_journal_volume                  44
_journal_year                    2015
_chemical_formula_sum            'C28 H58 Fe3 N3 O21'
_chemical_formula_weight         940.32
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2015-09-30 deposited with the CCDC.
2015-11-01 downloaded from the CCDC.
;
_cell_angle_alpha                76.8910(10)
_cell_angle_beta                 70.4770(10)
_cell_angle_gamma                71.2670(10)
_cell_formula_units_Z            2
_cell_length_a                   11.9901(7)
_cell_length_b                   14.0481(8)
_cell_length_c                   14.8372(8)
_cell_measurement_reflns_used    6792
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.12
_cell_measurement_theta_min      2.27
_cell_volume                     2210.6(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SMART'
_computing_molecular_graphics    diamond
_computing_publication_material  word
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.1042
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            32232
_diffrn_reflns_theta_full        29.00
_diffrn_reflns_theta_max         29.00
_diffrn_reflns_theta_min         1.47
_exptl_absorpt_coefficient_mu    1.047
_exptl_absorpt_correction_T_max  0.8588
_exptl_absorpt_correction_T_min  0.7108
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.413
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             986
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.780
_refine_diff_density_min         -0.569
_refine_diff_density_rms         0.090
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.006
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     527
_refine_ls_number_reflns         11721
_refine_ls_number_restraints     37
_refine_ls_restrained_S_all      1.016
_refine_ls_R_factor_all          0.0457
_refine_ls_R_factor_gt           0.0399
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0453P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1040
_refine_ls_wR_factor_ref         0.1061
_reflns_number_gt                9813
_reflns_number_total             11721
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5dt03024b2.cif
_cod_data_source_block           cluster5
_cod_depositor_comments
'Adding full bibliography for 7037072--7037076.cif.'
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7037076
_diffrn_reflns_av_unetl/neti     0.0783