Synthesis and Elaboration of the Dinuclear Iron-Imide Cluster Core [Fe2(μ-NR)2]2+
Jeremiah S. Duncan; Michael J. Zdilla; Sonny C. Lee; Inorganic Chemistry 46 (2007) 1071–1080; doi:10.1021/ic061133+

data_4327204
_publ_contact_author_address
;                                                                               
 Department of Chemistry
 University of Waterloo
 200 University Avenue West
 Waterloo, Ontario  N2L 3G1
 CANADA  
;
_publ_contact_author_email       sclee@uwaterloo.ca
_publ_contact_author_fax         519-746-0435
_publ_contact_author_name        'Sonny C. Lee'
_publ_contact_author_phone       '519-885-1211 x7501'
_publ_section_title
;
 Synthesis and Elaboration of the Dinuclear Iron-Imide Cluster Core
 [Fe2(\m-NR)2]2+
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              1071
_journal_page_last               1080
_journal_paper_doi               10.1021/ic061133+
_journal_volume                  46
_journal_year                    2007
_chemical_compound_source        'Chemical Synthesis, S.C. Lee Lab'
_chemical_formula_moiety
'(C8H20N +) (Fe 3+) (Cl -)2 (C6H18Si2N -)2 (C7H8)'
_chemical_formula_structural     (C8H20N)(FeCl2(NSi2C6H18)2)(C7H8)
_chemical_formula_sum            'C27 H64 Cl2 Fe N3 Si4'
_chemical_formula_weight         669.92
_chemical_name_common            (NEt4){FeCl2[N(SiMe3)2]2}
_chemical_name_systematic
; 
 tetraethylammonium dichlorobis(bis(trimethylsilyl)amido)ferrate(II)
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 108.22(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.379(3)
_cell_length_b                   11.612(2)
_cell_length_c                   22.422(5)
_cell_measurement_reflns_used    12498
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      24.99
_cell_measurement_theta_min      1.36
_cell_volume                     4050.7(15)
_computing_cell_refinement       DENZO-SMN
_computing_data_collection       'NONIUS COLLECT'
_computing_data_reduction        'DENZO-SMN, Platon, Siemens SHELXTL'
_computing_molecular_graphics    'Siemens SHELXTL'
_computing_publication_material  'CIFTAB, Siemens SHELXTL'
_computing_structure_refinement  'Siemens SHELXTL'
_computing_structure_solution    'Siemens SHELXTL'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device       'NONIUS Kappa CCD'
_diffrn_measurement_method       '\f + \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  0.056
_diffrn_reflns_av_sigmaI/netI    0.0814
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            12498
_diffrn_reflns_theta_full        49.98
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         1.36
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.641
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.099
_exptl_crystal_description       blocks
_exptl_crystal_F_000             1452
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_platon_squeeze_details
; 
Disorderred Toluene squeezed out of lattice.  Approximate position of toluene
represented by dummy atoms.
;
_refine_diff_density_max         0.368
_refine_diff_density_min         -0.352
_refine_diff_density_rms         0.069
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.043
_refine_ls_goodness_of_fit_obs   1.197
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     265
_refine_ls_number_reflns         7095
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.043
_refine_ls_restrained_S_obs      1.197
_refine_ls_R_factor_all          0.0946
_refine_ls_R_factor_obs          0.0574
_refine_ls_shift/esd_max         0.002
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0775P)^2^+0.2665P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1579
_refine_ls_wR_factor_obs         0.1441
_reflns_number_observed          4556
_reflns_number_total             7095
_reflns_observed_criterion       I>2\s(I)
_cod_data_source_file            ic0611332Bsi20060622_121538_02.cif
_cod_data_source_block           (NEt4){FeCl2[N(SiMe3)2]2}
_cod_original_cell_volume        4050.7(14)
_cod_database_code               4327204