Ligand Field Strength Mediates Electron Delocalization in Octahedral [((H)L)2Fe6(L')m](n+) Clusters.
Hernández Sánchez, Raúl; Zheng, Shao-Liang; Betley, Theodore A.; Journal of the American Chemical Society 137 (2015) 11126–11143; doi:10.1021/jacs.5b06453

data_4124373
_publ_section_title
;
 Ligand Field Strength Mediates Electron Delocalization in Octahedral
 [((H)L)2Fe6(L')m](n+) Clusters.
;
_journal_issue                   34
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              11126
_journal_page_last               11143
_journal_paper_doi               10.1021/jacs.5b06453
_journal_volume                  137
_journal_year                    2015
_chemical_formula_sum            'C64 H92 F12 Fe6 N18 O7 P2'
_chemical_formula_weight         1850.60
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 95.3841(16)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   10.1978(9)
_cell_length_b                   14.1321(13)
_cell_length_c                   25.820(2)
_cell_measurement_reflns_used    18557
_cell_measurement_temperature    100(1)
_cell_measurement_theta_max      50.050
_cell_measurement_theta_min      4.451
_cell_volume                     3704.7(6)
_computing_cell_refinement       'SAINT 7.46A (Bruker-AXS, 2009)'
_computing_data_collection       'APEX2 v2009.3.0 (Bruker-AXS, 2009)'
_computing_data_reduction        'SAINT 7.46A (Bruker-AXS, 2009)'
_computing_molecular_graphics    'Bruker SHELXTL (Shledrick, 2008)'
_computing_publication_material  'Bruker SHELXTL (Shledrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(1)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type
;
Bruker D8 goniometer with CCd area detector
;
_diffrn_measurement_method       'phi and omega scnas'
_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  0.0778
_diffrn_reflns_av_sigmaI/netI    0.0775
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            47523
_diffrn_reflns_theta_full        25.04
_diffrn_reflns_theta_max         25.04
_diffrn_reflns_theta_min         1.58
_exptl_absorpt_coefficient_mu    1.282
_exptl_absorpt_correction_T_max  0.9873
_exptl_absorpt_correction_T_min  0.8613
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2008)'
_exptl_crystal_colour            Black
_exptl_crystal_density_diffrn    1.659
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1904
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.01
_refine_diff_density_max         0.711
_refine_diff_density_min         -0.482
_refine_diff_density_rms         0.101
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.00(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.040
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1010
_refine_ls_number_reflns         13036
_refine_ls_number_restraints     21
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_all          0.0667
_refine_ls_R_factor_gt           0.0503
_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^)+(0.0603P)^2^+1.9967P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1157
_refine_ls_wR_factor_ref         0.1240
_reflns_number_gt                10790
_reflns_number_total             13036
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja5b06453_si_002.cif
_cod_data_source_block           zsl
_cod_original_cell_volume        3704.6(6)
_cod_original_sg_symbol_H-M      P21
_cod_database_code               4124373