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_4317989
_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            'C50 H50 Br2 Fe2 O6'
_chemical_formula_weight         1018.42
_chemical_name_common            '[Fe2(m-O2CArTol)2(THF)2Br2]'
_chemical_name_systematic
;
   ?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 103.0780(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.5511(6)
_cell_length_b                   12.5628(7)
_cell_length_c                   19.5714(11)
_cell_measurement_temperature    188(2)
_cell_volume                     2287.4(2)
_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      188(2)
_diffrn_measured_fraction_theta_full 0.908
_diffrn_measured_fraction_theta_max 0.908
_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  0.0565
_diffrn_reflns_av_sigmaI/netI    0.0690
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            13120
_diffrn_reflns_theta_full        28.27
_diffrn_reflns_theta_max         28.27
_diffrn_reflns_theta_min         1.94
_exptl_absorpt_coefficient_mu    2.429
_exptl_absorpt_correction_T_max  1.000000
_exptl_absorpt_correction_T_min  0.649388
_exptl_absorpt_correction_type   SADABS
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.479
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1040
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.532
_refine_diff_density_min         -0.531
_refine_diff_density_rms         0.099
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.102
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     267
_refine_ls_number_reflns         5148
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.102
_refine_ls_R_factor_all          0.1049
_refine_ls_R_factor_gt           0.0664
_refine_ls_shift/su_max          0.083
_refine_ls_shift/su_mean         0.007
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0313P)^2^+6.4444P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1144
_refine_ls_wR_factor_ref         0.1293
_reflns_number_gt                3645
_reflns_number_total             5148
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic020186y_01.cif
_cod_data_source_block           1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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               4317989