Modeling the Active Site of [NiFe] Hydrogenases and the [NiFeu] Subsite of the C-Cluster of Carbon Monoxide Dehydrogenases: Low-Spin Iron(II) Versus High-Spin Iron(II).
Weber, Katharina; Erdem, Ozlen F.; Bill, Eckhard; Weyhermüller, Thomas; Lubitz, Wolfgang; Inorganic chemistry 53 (2014) 6329–6337; doi:10.1021/ic500910z

data_4338748
_publ_section_title
;
 Modeling the Active Site of [NiFe] Hydrogenases and the [NiFeu] Subsite
 of the C-Cluster of Carbon Monoxide Dehydrogenases: Low-Spin Iron(II)
 Versus High-Spin Iron(II).
;
_journal_issue                   12
_journal_name_full               'Inorganic chemistry'
_journal_page_first              6329
_journal_page_last               6337
_journal_paper_doi               10.1021/ic500910z
_journal_volume                  53
_journal_year                    2014
_chemical_compound_source        'tetrahydrofuran, hexane'
_chemical_formula_moiety         'C26 H39 Cl Fe Ni S4, 0.5(C4 H8 O)'
_chemical_formula_sum            'C28 H43 Cl Fe Ni O0.5 S4'
_chemical_formula_weight         665.87
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      15
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_block_code                LBZ-WK-067-01
_audit_creation_date             2011-11-21
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 106.579(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   28.279(4)
_cell_length_b                   14.235(2)
_cell_length_c                   15.978(2)
_cell_measurement_reflns_used    9268
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.3280
_cell_measurement_theta_min      2.2250
_cell_volume                     6164.6(15)
_computing_cell_refinement       'SAINT software (Bruker AXS, 2004)'
_computing_data_collection       'APEX2 (Bruker AXS, 2008)'
_computing_data_reduction        'SAINT software (Bruker AXS, 2004)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 66.67
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Bruker-AXS Kappa Mach3 APEX-II'
_diffrn_measurement_method       'CCD \f- and \w-scans'
_diffrn_radiation_monochromator  'Incoatec Helios mirrors'
_diffrn_radiation_source         '0.2 x 2mm^2^ focus rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0637
_diffrn_reflns_av_sigmaI/netI    0.0339
_diffrn_reflns_limit_h_max       40
_diffrn_reflns_limit_h_min       -39
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            84667
_diffrn_reflns_theta_full        30.64
_diffrn_reflns_theta_max         30.64
_diffrn_reflns_theta_min         1.50
_exptl_absorpt_coefficient_mu    1.458
_exptl_absorpt_correction_T_max  0.95993
_exptl_absorpt_correction_T_min  0.89162
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details   'SADABS (Bruker AXS, 2008)'
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.435
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             2800
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.445
_refine_diff_density_min         -0.372
_refine_diff_density_rms         0.074
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     346
_refine_ls_number_reflns         9460
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.0479
_refine_ls_R_factor_gt           0.0276
_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^)+(0.0206P)^2^+7.0423P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0545
_refine_ls_wR_factor_ref         0.0615
_reflns_number_gt                7331
_reflns_number_total             9460
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic500910z_si_002.cif
_cod_data_source_block           7620
_cod_depositor_comments
'Adding full bibliography for 4338747--4338750.cif.'
_cod_original_sg_symbol_Hall     '-c 2yc'
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_original_formula_sum        'C28 H43 Cl Fe Ni O0.50 S4'
_cod_database_code               4338748