Models of the iron-only hydrogenase: a comparison of chelate and bridge isomers of Fe2(CO)4{Ph2PN(R)PPh2}(μ-pdt) as proton-reduction catalysts.
Ghosh, Shishir; Hogarth, Graeme; Hollingsworth, Nathan; Holt, Katherine B.; Richards, Idris; Richmond, Michael G.; Sanchez, Ben E.; Unwin, David; Dalton transactions (Cambridge, England : 2003) 42 (2013) 6775–6792; doi:10.1039/c3dt50147g

data_7021254
_publ_section_title
;
 Models of the iron-only hydrogenase: a comparison of chelate and bridge
 isomers of Fe2(CO)4{Ph2PN(R)PPh2}(\m-pdt) as proton-reduction catalysts.
;
_journal_issue                   19
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              6775
_journal_page_last               6792
_journal_paper_doi               10.1039/c3dt50147g
_journal_volume                  42
_journal_year                    2013
_chemical_formula_sum            'C34 H33 Fe2 N O4 P2 S2'
_chemical_formula_weight         757.37
_chemical_name_systematic
;
?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                84.913(2)
_cell_angle_beta                 80.645(2)
_cell_angle_gamma                63.569(2)
_cell_formula_units_Z            2
_cell_length_a                   9.7227(10)
_cell_length_b                   10.3859(11)
_cell_length_c                   18.5263(19)
_cell_measurement_temperature    150(2)
_cell_volume                     1652.7(3)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.980
_diffrn_measured_fraction_theta_max 0.920
_diffrn_measurement_device_type  'Bruker SMART APEX diffractometer'
_diffrn_measurement_method       '\w rotation with narrow frames'
_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  0.0250
_diffrn_reflns_av_sigmaI/netI    0.0375
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            14333
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         28.31
_diffrn_reflns_theta_min         2.75
_exptl_absorpt_coefficient_mu    1.141
_exptl_absorpt_correction_T_max  0.8566
_exptl_absorpt_correction_T_min  0.7714
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.522
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             780
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.14
_refine_diff_density_max         2.451
_refine_diff_density_min         -0.726
_refine_diff_density_rms         0.099
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.030
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     406
_refine_ls_number_reflns         7563
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.030
_refine_ls_R_factor_all          0.0453
_refine_ls_R_factor_gt           0.0421
_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^)+(0.0557P)^2^+2.8501P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1095
_refine_ls_wR_factor_ref         0.1122
_reflns_number_gt                6917
_reflns_number_total             7563
_reflns_threshold_expression     I>2\s(I)
_cod_duplicate_entry             7021253
_cod_data_source_file            c3dt50147g.txt
_cod_data_source_block           str0540
_cod_original_sg_symbol_H-M      p_-1
_cod_database_code               7021254