A New Class of Binuclear and Trinuclear Iron-Sulfur Clusters Derived from Bis[bis(trimethylsilyl)amido]iron(II)
Ruslan Pryadun; R. H. Holm; Inorganic Chemistry 47 (2008) 3366–3370; doi:10.1021/ic7023742

data_4304794
_publ_section_title
;
A New Class of Binuclear and Trinuclear Iron-Sulfur Clusters Derived from
Bis[bis(trimethylsilyl)amido]iron(II)
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              3366
_journal_page_last               3370
_journal_paper_doi               10.1021/ic7023742
_journal_volume                  47
_journal_year                    2008
_chemical_formula_moiety         'C48 H99 Fe3 N3 S4 Si6, C4 H10 O'
_chemical_formula_sum            'C52 H109 Fe3 N3 O S4 Si6'
_chemical_formula_weight         1256.75
_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                 93.909(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.7083(10)
_cell_length_b                   23.1244(17)
_cell_length_c                   23.0203(18)
_cell_measurement_reflns_used    7636
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      27.79
_cell_measurement_theta_min      2.47
_cell_volume                     6749.3(9)
_computing_cell_refinement       'SAINT (Bruker 1997)'
_computing_data_collection       'SMART (Bruker 1997)'
_computing_data_reduction        'SAINT (Bruker 1997)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 1997)'
_computing_publication_material  'SHELXTL (Sheldrick, 1997)'
_computing_structure_refinement  'SHELX-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELX-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      193(2)
_diffrn_detector_area_resol_mean 'not measured'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker AXS CCD'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0517
_diffrn_reflns_av_sigmaI/netI    0.0591
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            37856
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.76
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.902
_exptl_absorpt_correction_T_max  0.798
_exptl_absorpt_correction_T_min  0.635
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.237
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             2704
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.799
_refine_diff_density_min         -0.734
_refine_diff_density_rms         0.078
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.034
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     606
_refine_ls_number_reflns         11874
_refine_ls_number_restraints     22
_refine_ls_restrained_S_all      1.034
_refine_ls_R_factor_all          0.0764
_refine_ls_R_factor_gt           0.0498
_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^)+(0.0590P)^2^+3.3106P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1125
_refine_ls_wR_factor_ref         0.1242
_reflns_number_gt                8628
_reflns_number_total             11874
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ic7023742-file005.cif
_cod_data_source_block           c:\dokument\holm\xray\prs25\work\prs25
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_refine_ls_hydrogen_treatment' value 'CONSTR' changed to
'constr' 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_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4304794