Modeling Dioxygen-Activating Centers in Non-Heme Diiron Enzymes: Carboxylate Shifts in Diiron(II) Complexes Supported by Sterically Hindered Carboxylate Ligands
Dongwhan Lee; Stephen J. Lippard; Inorganic Chemistry 41 (2002) 2704–2719; doi:10.1021/ic020186y

data_4317995
_publ_section_title
;
 Modeling Dioxygen-Activating Centers in Non-Heme Diiron Enzymes:
 Carboxylate Shifts in Diiron(II) Complexes Supported by Sterically
 Hindered Carboxylate Ligands
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              2704
_journal_page_last               2719
_journal_paper_doi               10.1021/ic020186y
_journal_volume                  41
_journal_year                    2002
_chemical_formula_sum            'C87 H56 Cl6 F8 Fe2 N4 O8'
_chemical_formula_weight         1761.76
_chemical_name_common            '[Fe2(m-O2CArF)4(1-MeIm)2]'
_chemical_name_systematic
;
   ?
;
_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
_cell_angle_alpha                93.6210(10)
_cell_angle_beta                 92.9080(10)
_cell_angle_gamma                99.5840(10)
_cell_formula_units_Z            2
_cell_length_a                   14.7618(4)
_cell_length_b                   16.2466(4)
_cell_length_c                   16.9722(5)
_cell_measurement_temperature    293(2)
_cell_volume                     3997.84(19)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.888
_diffrn_measured_fraction_theta_max 0.888
_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  0.0261
_diffrn_reflns_av_sigmaI/netI    0.0687
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            25107
_diffrn_reflns_theta_full        28.25
_diffrn_reflns_theta_max         28.25
_diffrn_reflns_theta_min         1.69
_exptl_absorpt_coefficient_mu    0.642
_exptl_absorpt_correction_T_max  1.000000
_exptl_absorpt_correction_T_min  0.757630
_exptl_absorpt_correction_type   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.464
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1792
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         1.092
_refine_diff_density_min         -1.128
_refine_diff_density_rms         0.084
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1031
_refine_ls_number_reflns         17572
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.1149
_refine_ls_R_factor_gt           0.0672
_refine_ls_shift/su_max          0.313
_refine_ls_shift/su_mean         0.009
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1132P)^2^+2.8774P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1808
_refine_ls_wR_factor_ref         0.2099
_reflns_number_gt                11001
_reflns_number_total             17572
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic020186y_07.cif
_cod_data_source_block           11
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_database_code               4317995