Synthesis and Characterization of Di- and Tetracarbene Iron(II) Complexes with Chelating N-Heterocyclic Carbene Ligands and Their Application in Aryl Grignard‒Alkyl Halide Cross-Coupling
Meyer, Steffen; Orben, Claudia Manuela; Demeshko, Serhiy; Dechert, Sebastian; Meyer, Franc; Organometallics 30 (2011) 6692–; doi:10.1021/om200870w

data_4065515
_publ_section_title
;
 Synthesis and Characterization of Di- and Tetracarbene Iron(II) Complexes
 with Chelating N-Heterocyclic Carbene Ligands and Their Application in
 Aryl Grignard--Alkyl Halide Cross-Coupling
;
_journal_issue                   24
_journal_name_full               Organometallics
_journal_page_first              6692
_journal_paper_doi               10.1021/om200870w
_journal_volume                  30
_journal_year                    2011
_chemical_formula_moiety         'C26 H38 Fe N10 2+, C2 H3 N, Br4 Fe 2-'
_chemical_formula_sum            'C28 H41 Br4 Fe2 N11'
_chemical_formula_weight         963.06
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           40
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'A 2 -2a'
_symmetry_space_group_name_H-M   'A m a 2'
_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            4
_cell_length_a                   20.7070(7)
_cell_length_b                   13.3160(3)
_cell_length_c                   13.8370(3)
_cell_measurement_reflns_used    24323
_cell_measurement_temperature    133(2)
_cell_measurement_theta_max      26.74
_cell_measurement_theta_min      1.97
_cell_volume                     3815.34(18)
_computing_cell_refinement       'X-AREA (Stoe & Cie, 2002)'
_computing_data_collection       'X-AREA (Stoe & Cie, 2002)'
_computing_data_reduction        'X-AREA (Stoe & Cie, 2002)'
_computing_molecular_graphics    'DIAMOND (Brandenburg, 2001)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      133(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Stoe IPDS II'
_diffrn_measurement_method       \w
_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  0.0638
_diffrn_reflns_av_sigmaI/netI    0.0314
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            24323
_diffrn_reflns_theta_full        26.74
_diffrn_reflns_theta_max         26.74
_diffrn_reflns_theta_min         1.97
_exptl_absorpt_coefficient_mu    4.984
_exptl_absorpt_correction_T_max  0.5617
_exptl_absorpt_correction_T_min  0.3160
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'X-RED (Stoe & Cie, 2002)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.677
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1912
_exptl_crystal_size_max          0.29
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.832
_refine_diff_density_min         -0.819
_refine_diff_density_rms         0.093
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.020(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     217
_refine_ls_number_reflns         4160
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.059
_refine_ls_R_factor_all          0.0326
_refine_ls_R_factor_gt           0.0312
_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^)+(0.0363P)^2^+10.3105P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0762
_refine_ls_wR_factor_ref         0.0769
_reflns_number_gt                4035
_reflns_number_total             4160
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om200870w_si_002.cif
_cod_data_source_block           co3-26
_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 1715 2011-07-08 13:25:40Z adriana 
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_cod_database_code               4065515