Synthesis and Structural Characterization of Metallocrown Ethers Containing Butterfly Fe2S2Cluster Cores. Biomimetic Hydrogen Evolution Catalyzed by Fe2(μ-SCH2CH2OCH2CH2S-μ)(CO)6
Song, Li-Cheng; Gao, Jie; Wang, Hu-Ting; Hua, Yu-Juan; Fan, Hong-Tao; Zhang, Xiao-Guang; Hu, Qing-Mei; Organometallics 25 (2006) 5724–; doi:10.1021/om060711r

data_4074502
_publ_section_title
;
 Synthesis and Structural Characterization of Metallocrown Ethers
 Containing Butterfly Fe2S2Cluster Cores. Biomimetic Hydrogen Evolution
 Catalyzed by Fe2(\m-SCH2CH2OCH2CH2S-\m)(CO)6
;
_journal_issue                   24
_journal_name_full               Organometallics
_journal_page_first              5724
_journal_paper_doi               10.1021/om060711r
_journal_volume                  25
_journal_year                    2006
_chemical_formula_sum            'C20 H16 Fe4 O14 S4'
_chemical_formula_weight         831.97
_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                90.00
_cell_angle_beta                 95.643(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   15.933(5)
_cell_length_b                   10.426(3)
_cell_length_c                   38.005(11)
_cell_measurement_reflns_used    946
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      22.02
_cell_measurement_theta_min      2.52
_cell_volume                     6283(3)
_computing_cell_refinement       'Bruker SMART'
_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      293(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and 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  0.0618
_diffrn_reflns_av_sigmaI/netI    0.0860
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       47
_diffrn_reflns_limit_l_min       -47
_diffrn_reflns_number            33557
_diffrn_reflns_theta_full        26.43
_diffrn_reflns_theta_max         26.43
_diffrn_reflns_theta_min         1.76
_exptl_absorpt_coefficient_mu    2.137
_exptl_absorpt_correction_T_max  1.000000
_exptl_absorpt_correction_T_min  0.799812
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_density_diffrn    1.759
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             3328
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.494
_refine_diff_density_min         -0.378
_refine_diff_density_rms         0.085
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
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_refine_ls_number_parameters     757
_refine_ls_number_reflns         12808
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.027
_refine_ls_R_factor_all          0.1157
_refine_ls_R_factor_gt           0.0566
_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^)+(0.0339P)^2^+4.4338P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0945
_refine_ls_wR_factor_ref         0.1091
_reflns_number_gt                7676
_reflns_number_total             12808
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om060711rsi20060806_084430.cif
_cod_data_source_block           030619c
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'NONE' 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 
;
_cod_original_cell_volume        6282(3)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4074502