Dinuclear Iron‒Imido Complexes withN-Heterocyclic Carbene Ligation: Synthesis, Structure, and Redox Reactivity
Zhang, Qiang; Xiang, Li; Deng, Liang; Organometallics 31 (2012) 4537–; doi:10.1021/om300319n

data_4078557
_publ_section_title
;
 Dinuclear Iron--Imido Complexes withN-Heterocyclic Carbene Ligation:
 Synthesis, Structure, and Redox Reactivity
;
_journal_issue                   12
_journal_name_full               Organometallics
_journal_page_first              4537
_journal_paper_doi               10.1021/om300319n
_journal_volume                  31
_journal_year                    2012
_chemical_formula_sum            'C46 H74 F2 Fe2 N6'
_chemical_formula_weight         860.81
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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            8
_cell_length_a                   17.8374(15)
_cell_length_b                   20.5763(17)
_cell_length_c                   25.961(2)
_cell_measurement_reflns_used    9806
_cell_measurement_temperature    133(2)
_cell_measurement_theta_max      30.60
_cell_measurement_theta_min      2.42
_cell_volume                     9528.4(13)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_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      133(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w 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  0.0242
_diffrn_reflns_av_sigmaI/netI    0.0224
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       33
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            45112
_diffrn_reflns_theta_full        27.00
_diffrn_reflns_theta_max         27.00
_diffrn_reflns_theta_min         1.57
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.653
_exptl_absorpt_correction_T_max  0.8282
_exptl_absorpt_correction_T_min  0.7802
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.200
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             3696
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.575
_refine_diff_density_min         -0.598
_refine_diff_density_rms         0.073
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.047
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     550
_refine_ls_number_reflns         10393
_refine_ls_number_restraints     66
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.0426
_refine_ls_R_factor_gt           0.0333
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0439P)^2^+5.1239P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0866
_refine_ls_wR_factor_ref         0.0944
_reflns_number_gt                8706
_reflns_number_total             10393
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om300319n_si_001.cif
_cod_data_source_block           2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        9528.5(14)
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               4078557