A Continuous Symmetry Measure of [4Fe-4S]+ Core Distortions and Analysis of Supramolecular Synthons in Crystal Structures of (Et4N)3[Fe4S4Cl4].Et4NCl at 100 and 295 K
Karl S. Hagen; Mohammad Uddin; Inorganic Chemistry 47 (2008) 11807–11815; doi:10.1021/ic801533q

data_4306721
_publ_contact_author_address
;
Department of Chemistry
Emory University
Atlanta, GA 30322
USA
;
_publ_contact_author_email       khagen@emory.edu
_publ_contact_author_fax         1-404-727-6556
_publ_contact_author_name        'Karl S. Hagen'
_publ_contact_author_phone       1-404-727-6586
_publ_section_title
;
A Continuous Symmetry Measure of [4Fe-4S]+ Core Distortions and Analysis
of Supramolecular Synthons in Crystal Structures of
(Et4N)3[Fe4S4Cl4].Et4NCl at 100 and 295 K
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              11807
_journal_page_last               11815
_journal_paper_doi               10.1021/ic801533q
_journal_volume                  47
_journal_year                    2008
_chemical_formula_moiety         '4(C8 H20 N), H4 Fe4 S8, Cl'
_chemical_formula_sum            'C32 H84 Cl Fe4 N4 S8'
_chemical_formula_weight         1040.36
_chemical_name_common            (Et4N)3[Fe4S4(SH)4].Et4NCl
_chemical_name_systematic
;tetrakis(Tetraethylammonium) tetrakis((\m~3~-sulfido)
-hydrosulfido-iron) chloride
;
_space_group_IT_number           114
_symmetry_cell_setting           tetragonal
_symmetry_Int_Tables_number      114
_symmetry_space_group_name_Hall  'P -4 2n'
_symmetry_space_group_name_H-M   'P -4 21 c'
_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            2
_cell_length_a                   12.4153(4)
_cell_length_b                   12.4153(4)
_cell_length_c                   16.1984(11)
_cell_measurement_reflns_used    7809
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      29.96
_cell_measurement_theta_min      2.32
_cell_volume                     2496.8(2)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL, and CrystalMaker'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      295(2)
_diffrn_detector_area_resol_mean 8.333
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1561
_diffrn_reflns_av_sigmaI/netI    0.0888
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            12181
_diffrn_reflns_theta_full        25.99
_diffrn_reflns_theta_max         25.99
_diffrn_reflns_theta_min         2.07
_diffrn_source                   'fine-focus sealed tube'
_diffrn_source_type              'Bruker D8 SMART Apex CCD'
_exptl_absorpt_coefficient_mu    1.553
_exptl_absorpt_correction_T_max  0.8004
_exptl_absorpt_correction_T_min  0.7674
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details   xprep
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.384
_exptl_crystal_density_meas      1.37
_exptl_crystal_density_method    'neutral buoyancy'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1106
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.836
_refine_diff_density_min         -0.590
_refine_diff_density_rms         0.113
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.02(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     111
_refine_ls_number_reflns         2454
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0595
_refine_ls_R_factor_gt           0.0544
_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^)+(0.0525P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0982
_refine_ls_wR_factor_ref         0.1001
_reflns_number_gt                2312
_reflns_number_total             2454
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic801533q_si_001_7.cif
_cod_data_source_block           2-mu10rf
_cod_database_code               4306721