Biomimetic Model Featuring the NH Proton and Bridging Hydride Related to a Proposed Intermediate in Enzymatic H2 Production by Fe-Only Hydrogenase
Ming-Hsi Chiang; Yu-Chiao Liu; Shu-Ting Yang; Gene-Hsiang Lee; Inorganic Chemistry 48 (2009) 7604–7612; doi:10.1021/ic900564q

data_4302921
_publ_section_title
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Biomimetic Model Featuring the NH Proton and Bridging Hydride Related to a
Proposed Intermediate in Enzymatic H2 Production by Fe-Only Hydrogenase
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              7604
_journal_page_last               7612
_journal_paper_doi               10.1021/ic900564q
_journal_volume                  48
_journal_year                    2009
_chemical_formula_sum            'C36 H72 B2 Cl4 F8 Fe4 N2 O8 P4 S4'
_chemical_formula_weight         1451.90
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_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            4
_cell_length_a                   26.2091(17)
_cell_length_b                   11.9446(7)
_cell_length_c                   20.3932(13)
_cell_measurement_reflns_used    5926
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      24.92
_cell_measurement_theta_min      2.31
_cell_volume                     6384.2(7)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'BRUKER SMART APEXCCD area detector'
_diffrn_measurement_method       'omega scans'
_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  0.0495
_diffrn_reflns_av_sigmaI/netI    0.0481
_diffrn_reflns_limit_h_max       34
_diffrn_reflns_limit_h_min       -34
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            47855
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.55
_exptl_absorpt_coefficient_mu    1.355
_exptl_absorpt_correction_T_max  0.8764
_exptl_absorpt_correction_T_min  0.5808
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.511
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             2976
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.721
_refine_diff_density_min         -0.708
_refine_diff_density_rms         0.097
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.030(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.154
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     662
_refine_ls_number_reflns         14451
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.155
_refine_ls_R_factor_all          0.0511
_refine_ls_R_factor_gt           0.0467
_refine_ls_shift/su_max          0.020
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0577P)^2^+1.4177P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1116
_refine_ls_wR_factor_ref         0.1159
_reflns_number_gt                13539
_reflns_number_total             14451
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic900564q_si_002.cif
_cod_data_source_block           ic13041
_cod_depositor_comments
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The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
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 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not_measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
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_cod_database_code               4302921