Multinuclear Iron-Phenyl Species in Reactions of Simple Iron Salts and PhMgBr: Identification of Fe4(μ-Ph)6(THF)4 as a Key Reactive Species for Cross-Coupling
Carpenter, Stephanie H.; Baker, Tessa M.; Munoz, Salvador; Brennessel, William W.; Neidig, Michael L.; Chemical Science  (2018) –; doi:10.1039/C8SC02915F

data_1549834
_publ_section_title
;
 Multinuclear Iron-Phenyl Species in Reactions of Simple Iron Salts and
 PhMgBr: Identification of Fe4(\m-Ph)6(THF)4 as a Key Reactive Species for
 Cross-Coupling
;
_journal_name_full               'Chemical Science'
_journal_paper_doi               10.1039/C8SC02915F
_journal_year                    2018
_chemical_formula_moiety
'C24 H16 Br2 F4 Fe2, 2(C21 H39 Mg O6), 2.5(C4 H8 O)'
_chemical_formula_sum            'C76 H114 Br2 F4 Fe2 Mg2 O14.5'
_chemical_formula_weight         1655.81
_chemical_name_common            neisc29
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2016/6
_audit_update_record
;
2018-06-25 deposited with the CCDC.
2018-08-24 downloaded from the CCDC.
;
_cell_angle_alpha                100.0619(15)
_cell_angle_beta                 99.2790(16)
_cell_angle_gamma                94.4973(16)
_cell_formula_units_Z            2
_cell_length_a                   12.3417(9)
_cell_length_b                   15.4069(11)
_cell_length_c                   21.5668(15)
_cell_measurement_reflns_used    3982
_cell_measurement_temperature    100.0(5)
_cell_measurement_theta_max      27.11
_cell_measurement_theta_min      2.24
_cell_volume                     3960.9(5)
_computing_cell_refinement       'SAINT (Bruker, 2013)'
_computing_data_collection       'APEX3 (Bruker, 2016)'
_computing_data_reduction        'SAINT (Bruker, 2013)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2015b)'
_computing_structure_solution    'SHELXT-2014/5 (Sheldrick, 2015a)'
_diffrn_ambient_temperature      100.0(5)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker SMART APEX II CCD platform'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0644
_diffrn_reflns_av_unetI/netI     0.0761
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            59640
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        28.283
_diffrn_reflns_theta_max         28.306
_diffrn_reflns_theta_min         1.682
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    1.461
_exptl_absorpt_correction_T_max  0.7457
_exptl_absorpt_correction_T_min  0.5836
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS-2016/2 (Krause et al., 2015)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.388
_exptl_crystal_description       needle
_exptl_crystal_F_000             1736
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.978
_refine_diff_density_min         -0.594
_refine_diff_density_rms         0.089
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.058
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     959
_refine_ls_number_reflns         19681
_refine_ls_number_restraints     99
_refine_ls_restrained_S_all      1.058
_refine_ls_R_factor_all          0.1056
_refine_ls_R_factor_gt           0.0554
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0723P)^2^+0.2214P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1323
_refine_ls_wR_factor_ref         0.1514
_reflns_Friedel_coverage         0.000
_reflns_number_gt                12120
_reflns_number_total             19681
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8sc02915f2.cif
_cod_data_source_block           4
_cod_database_code               1549834
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_min   0.529
_shelx_estimated_absorpt_t_max   0.844
_shelx_res_checksum              48495