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_4310377
_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)2[TpMoFe3S4(N3)3] '
_chemical_formula_sum            'C25 H50 B Fe3 Mo N17 S4'
_chemical_formula_weight         991.36
_chemical_name_systematic
;
  ?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 92.902(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.6920(17)
_cell_length_b                   34.707(6)
_cell_length_c                   10.9322(18)
_cell_measurement_temperature    293(2)
_cell_volume                     4051.6(12)
_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      193(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_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  0.0462
_diffrn_reflns_av_sigmaI/netI    0.0881
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       34
_diffrn_reflns_limit_k_min       -46
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            29261
_diffrn_reflns_theta_full        28.31
_diffrn_reflns_theta_max         28.31
_diffrn_reflns_theta_min         1.17
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    1.605
_exptl_absorpt_correction_T_max  0.92
_exptl_absorpt_correction_T_min  0.84
_exptl_absorpt_correction_type   SADABS
_exptl_crystal_colour            'dark black '
_exptl_crystal_density_diffrn    1.625
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             2032
_exptl_crystal_size_max          0.1
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.745
_refine_diff_density_min         -0.627
_refine_diff_density_rms         0.090
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.957
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     495
_refine_ls_number_reflns         10050
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.957
_refine_ls_R_factor_all          0.0886
_refine_ls_R_factor_gt           0.0457
_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^)+(0.0425P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0973
_refine_ls_wR_factor_ref         0.1051
_reflns_number_gt                6084
_reflns_number_total             10050
_reflns_threshold_expression     2sigma(I)
_cod_data_source_file            ic030259t_02.cif
_cod_data_source_block           (et4n)2[tpmofe3s4(n3)3]
_cod_original_cell_volume        4051.6(11)
_cod_database_code               4310377