Oxygen-Centered Hexatantalum Tetradecaimido Cluster Complexes
Jamin L. Krinsky; Laura L. Anderson; John Arnold; Robert G. Bergman; Inorganic Chemistry 47 (2008) 1053–1066; doi:10.1021/ic701920v

data_4304415
_publ_section_title
;
Oxygen-Centered Hexatantalum Tetradecaimido Cluster Complexes
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              1053
_journal_page_last               1066
_journal_paper_doi               10.1021/ic701920v
_journal_volume                  47
_journal_year                    2008
_chemical_formula_moiety         'C84 H70 N14 O Ta6, 4(C4 H8 O)'
_chemical_formula_sum            'C100 H102 N14 O5 Ta6'
_chemical_formula_weight         2665.66
_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                89.991(2)
_cell_angle_beta                 76.981(2)
_cell_angle_gamma                61.835(2)
_cell_formula_units_Z            1
_cell_length_a                   13.6126(17)
_cell_length_b                   13.8895(17)
_cell_length_c                   14.0722(17)
_cell_measurement_reflns_used    3636
_cell_measurement_temperature    155(2)
_cell_measurement_theta_max      26.15
_cell_measurement_theta_min      2.38
_cell_volume                     2267.8(5)
_computing_cell_refinement       'Bruker SAINT v7.07B'
_computing_data_collection       'Bruker SMART v5.631'
_computing_data_reduction        'Bruker SAINT v7.07B'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      155(2)
_diffrn_measured_fraction_theta_full 0.957
_diffrn_measured_fraction_theta_max 0.957
_diffrn_measurement_device_type  'Bruker APEX'
_diffrn_measurement_method       '\w 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  0.0350
_diffrn_reflns_av_sigmaI/netI    0.0740
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            14361
_diffrn_reflns_theta_full        26.43
_diffrn_reflns_theta_max         26.43
_diffrn_reflns_theta_min         1.50
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    7.269
_exptl_absorpt_correction_T_max  0.7126
_exptl_absorpt_correction_T_min  0.2857
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'Blessing, 1995'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.952
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       tablet
_exptl_crystal_F_000             1278
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.05
_refine_diff_density_max         3.041
_refine_diff_density_min         -1.479
_refine_diff_density_rms         0.224
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.035
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     565
_refine_ls_number_reflns         8933
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.0726
_refine_ls_R_factor_gt           0.0438
_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^)+(0.0538P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0991
_refine_ls_wR_factor_ref         0.1069
_reflns_number_gt                6446
_reflns_number_total             8933
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic701920v-file002.cif
_cod_data_source_block           compound_2_Mo
_cod_database_code               4304415