Heterometal Cubane-Type MFe3S4 Clusters (M = Mo, V) Trigonally Symmetrized with Hydrotris(pyrazolyl)borate(1-) and Tris(pyrazolyl)methanesulfonate(1-) Capping Ligands
Dmitry V. Fomitchev; Craig C. McLauchlan; R. H. Holm; Inorganic Chemistry 41 (2002) 958–966; doi:10.1021/ic011106d

data_4317606
_publ_contact_author
;
        R.H. Holm
        Department of Chemistry and Chemical Biology
        Harvard University
        Cambridge, MA 02138
        USA
;
_publ_contact_author_email       holm@chemistry.harvard.edu
_publ_contact_author_fax         '+1 (617) 496-9289'
_publ_contact_author_phone       '+1 (617) 495-0853'
_publ_section_title
;
 Heterometal Cubane-Type MFe3S4 Clusters (M = Mo, V) Trigonally
 Symmetrized with Hydrotris(pyrazolyl)borate(1-) and
 Tris(pyrazolyl)methanesulfonate(1-) Capping Ligands
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              958
_journal_page_last               966
_journal_paper_doi               10.1021/ic011106d
_journal_volume                  41
_journal_year                    2002
_chemical_formula_moiety         '(C16 H24 Fe3 N6 O3 S8 V) (C4 H12 N)2'
_chemical_formula_sum            'C24 H48 Fe3 N8 O3 S8 V'
_chemical_formula_weight         971.67
_chemical_name_systematic
;

  ?

;
_space_group_IT_number           18
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2 2ab'
_symmetry_space_group_name_H-M   'P 21 21 2'
_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                   19.5532(8)
_cell_length_b                   20.4057(8)
_cell_length_c                   10.2203(4)
_cell_measurement_temperature    213(2)
_cell_volume                     4077.9(3)
_computing_cell_refinement       'SMART, Version 5.618 (Bruker AXS, 2000)'
_computing_data_collection       'SMART, Version 5.618 (Bruker AXS, 2000)'
_computing_data_reduction        'SAINT+, Version 6.02 (Bruker AXS, 1999)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      213(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Bruker SMART CCD area detector system'
_diffrn_measurement_method       '\o, 0.3 deg/frame'
_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  0.0449
_diffrn_reflns_av_sigmaI/netI    0.0668
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            27253
_diffrn_reflns_theta_full        28.29
_diffrn_reflns_theta_max         28.29
_diffrn_reflns_theta_min         1.44
_diffrn_standards_decay_%        '< 2'
_exptl_absorpt_coefficient_mu    1.715
_exptl_absorpt_correction_T_max  0.817
_exptl_absorpt_correction_T_min  1.0
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'performed in SADABS'
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.583
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2004
_exptl_crystal_size_max          0.250
_exptl_crystal_size_mid          0.120
_exptl_crystal_size_min          0.120
_refine_diff_density_max         0.590
_refine_diff_density_min         -0.277
_refine_diff_density_rms         0.079
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.017(13)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.925
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     424
_refine_ls_number_reflns         9842
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.925
_refine_ls_R_factor_all          0.0730
_refine_ls_R_factor_gt           0.0427
_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

  1/[\s^2^(Fo^2^)+(0.0392Fo^2^)^2^]

;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0771
_refine_ls_wR_factor_ref         0.0856
_reflns_number_gt                6946
_reflns_number_total             9842
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic011106d_7.cif
_cod_data_source_block           '[Me4N]2[9]'
_cod_database_code               4317606