Effect of Bridgehead Steric Bulk on the Intramolecular C-H Heterolysis of [FeFe]-Hydrogenase Active Site Models Containing a P2N2 Pendant Amine Ligand.
Zheng, Dehua; Wang, Mei; Wang, Ning; Cheng, Minglun; Sun, Licheng; Inorganic chemistry 55 (2016) 411–418; doi:10.1021/acs.inorgchem.5b00923

data_4344637
_publ_section_title
;
 Effect of Bridgehead Steric Bulk on the Intramolecular C-H Heterolysis of
 [FeFe]-Hydrogenase Active Site Models Containing a P2N2 Pendant Amine
 Ligand.
;
_journal_issue                   2
_journal_name_full               'Inorganic chemistry'
_journal_page_first              411
_journal_page_last               418
_journal_paper_doi               10.1021/acs.inorgchem.5b00923
_journal_volume                  55
_journal_year                    2016
_chemical_formula_sum            'C75 H61 B Cl4 F24 Fe2 N2 O4 P2 S2'
_chemical_formula_weight         1900.63
_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                111.200(6)
_cell_angle_beta                 107.729(6)
_cell_angle_gamma                91.890(7)
_cell_formula_units_Z            2
_cell_length_a                   13.0997(13)
_cell_length_b                   17.3147(16)
_cell_length_c                   21.0259(19)
_cell_measurement_reflns_used    2626
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      19.10
_cell_measurement_theta_min      2.18
_cell_volume                     4179.8(7)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(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  0.0889
_diffrn_reflns_av_sigmaI/netI    0.1674
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            27368
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.98
_exptl_absorpt_coefficient_mu    0.665
_exptl_absorpt_correction_T_max  0.910
_exptl_absorpt_correction_T_min  0.889
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            purple
_exptl_crystal_density_diffrn    1.510
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1920
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.15
_refine_diff_density_max         1.529
_refine_diff_density_min         -0.993
_refine_diff_density_rms         0.109
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.000
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1030
_refine_ls_number_reflns         14638
_refine_ls_number_restraints     168
_refine_ls_restrained_S_all      1.008
_refine_ls_R_factor_all          0.2173
_refine_ls_R_factor_gt           0.1113
_refine_ls_shift/su_max          0.059
_refine_ls_shift/su_mean         0.005
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1759P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2940
_refine_ls_wR_factor_ref         0.3415
_reflns_number_gt                6324
_reflns_number_total             14638
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic5b00923_si_006.cif
_cod_data_source_block           ok
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/current/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4268 2015-11-12 08:31:59Z antanas 
;
_cod_original_sg_symbol_H-M      'P-1   '
_cod_database_code               4344637