Binuclear Iron-Sulfur Complexes with Bidentate Phosphine Ligands as Active Site Models of Fe-Hydrogenase and Their Catalytic Proton Reduction
Weiming Gao; Jesper Ekström; Jianhui Liu; Changneng Chen; Lars Eriksson; Linhong Weng; Björn Åkermark; Licheng Sun; Inorganic Chemistry 46 (2007) 1981–1991; doi:10.1021/ic0610278

data_4306881
_publ_section_title
;
Binuclear Iron-Sulfur Complexes with Bidentate Phosphine Ligands as
Active Site Models of Fe-Hydrogenase and Their Catalytic Proton Reduction
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              1981
_journal_page_last               1991
_journal_paper_doi               10.1021/ic0610278
_journal_volume                  46
_journal_year                    2007
_chemical_formula_sum            'C25 H25 Fe2 O4 P2 S2'
_chemical_formula_weight         627.21
_chemical_name_systematic
; 
 ? 
;
_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                90.027(8)
_cell_angle_beta                 90.938(8)
_cell_angle_gamma                89.991(8)
_cell_formula_units_Z            4
_cell_length_a                   9.8480(10)
_cell_length_b                   14.3088(15)
_cell_length_c                   23.615(2)
_cell_measurement_temperature    293(2)
_cell_volume                     3327.2(6)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.827
_diffrn_measured_fraction_theta_max 0.827
_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  0.0671
_diffrn_reflns_av_sigmaI/netI    0.2022
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            19010
_diffrn_reflns_theta_full        33.38
_diffrn_reflns_theta_max         33.38
_diffrn_reflns_theta_min         4.14
_exptl_absorpt_coefficient_mu    1.118
_exptl_crystal_density_diffrn    1.252
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1284
_refine_diff_density_max         0.428
_refine_diff_density_min         -0.354
_refine_diff_density_rms         0.066
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.821
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     397
_refine_ls_number_reflns         10680
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.821
_refine_ls_R_factor_all          0.2303
_refine_ls_R_factor_gt           0.0480
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0375P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0874
_refine_ls_wR_factor_ref         0.1269
_reflns_number_gt                3211
_reflns_number_total             10680
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic0610278si20060609_025240.cif
_cod_data_source_block           ra4
_cod_database_code               4306881