Structural Conversions of Molybdenum-Iron-Sulfur Edge-Bridged Double Cubanes and PN-Type Clusters Topologically Related to the Nitrogenase P-Cluster
Yugen Zhang; R. H. Holm; Inorganic Chemistry 43 (2004) 674–682; doi:10.1021/ic030259t

data_4310381
_publ_section_title
;
 Structural Conversions of Molybdenum-Iron-Sulfur Edge-Bridged Double
 Cubanes and PN-Type Clusters Topologically Related to the Nitrogenase
 P-Cluster
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              674
_journal_page_last               682
_journal_paper_doi               10.1021/ic030259t
_journal_volume                  43
_journal_year                    2004
_chemical_formula_moiety         (Et4N)4[Tp2Mo2Fe6S8(C4H5N2)4]3MeCN
_chemical_formula_sum            'C72 H119 B2 Fe6 Mo2 N27 S8'
_chemical_formula_weight         2168.44
_chemical_melting_point          ?
_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                102.785(5)
_cell_angle_beta                 99.337(5)
_cell_angle_gamma                97.038(5)
_cell_formula_units_Z            1
_cell_length_a                   11.960(3)
_cell_length_b                   14.424(4)
_cell_length_c                   15.357(4)
_cell_measurement_temperature    193(2)
_cell_volume                     2514.6(11)
_computing_cell_refinement       'Bruker Smart'
_computing_data_collection       'Bruker Smart'
_computing_data_reduction        'Bruker SHELXTL'
_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      273(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 scan'
_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  0.0190
_diffrn_reflns_av_sigmaI/netI    0.0379
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            14006
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.75
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    1.288
_exptl_absorpt_correction_T_max  0.87
_exptl_absorpt_correction_T_min  0.60
_exptl_absorpt_correction_type   SADABS
_exptl_crystal_colour            'dark green '
_exptl_crystal_density_diffrn    1.430
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             968
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.876
_refine_diff_density_min         -0.534
_refine_diff_density_rms         0.101
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.049
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     545
_refine_ls_number_reflns         8794
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.049
_refine_ls_R_factor_all          0.0626
_refine_ls_R_factor_gt           0.0447
_refine_ls_shift/su_max          0.423
_refine_ls_shift/su_mean         0.009
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0781P)^2^+2.8015P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1248
_refine_ls_wR_factor_ref         0.1393
_reflns_number_gt                6856
_reflns_number_total             8794
_reflns_threshold_expression     2sigma(I)
_cod_data_source_file            ic030259t_06.cif
_cod_data_source_block           (Et4N)4[Tp2Mo2Fe6S8(C4H5N2)4]3MeCN
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value ' not measured ' was changed to '?' -
the value is undefined or not given.

Automatic conversion script
Id: cif_fix_values 1569 2011-02-09 13:29:24Z adriana 
;
_cod_original_cell_volume        2514.5(11)
_cod_database_code               4310381