Tantalum Amido and Imido Complexes Supported byTris[(2-indolyl)methyl]amine, a Tetradentate Trianionic Ligand with Reduced π-Donor Character
Joseph M. Tanski; Gerard Parkin; Inorganic Chemistry 42 (2003) 264–266; doi:10.1021/ic026182a

data_4313003
_publ_section_title
;
 Tantalum Amido and Imido Complexes Supported
 byTris[(2-indolyl)methyl]amine, a Tetradentate Trianionic Ligand with
 Reduced \p-Donor Character
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              264
_journal_page_last               266
_journal_paper_doi               10.1021/ic026182a
_journal_volume                  42
_journal_year                    2003
_chemical_formula_sum            'C38.5 H40.5 N6 Ta'
_chemical_formula_weight         768.22
_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                79.627(12)
_cell_angle_beta                 73.212(18)
_cell_angle_gamma                65.303(10)
_cell_formula_units_Z            4
_cell_length_a                   13.205(9)
_cell_length_b                   15.608(11)
_cell_length_c                   19.893(12)
_cell_measurement_temperature    243(2)
_cell_volume                     3558(4)
_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      243(2)
_diffrn_measured_fraction_theta_full 0.941
_diffrn_measured_fraction_theta_max 0.941
_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  0.0990
_diffrn_reflns_av_sigmaI/netI    0.1473
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            13429
_diffrn_reflns_theta_full        23.26
_diffrn_reflns_theta_max         23.26
_diffrn_reflns_theta_min         1.44
_exptl_absorpt_coefficient_mu    3.124
_exptl_absorpt_correction_T_max  0.8852
_exptl_absorpt_correction_T_min  0.7453
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.434
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1546
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.04
_refine_diff_density_max         2.207
_refine_diff_density_min         -2.786
_refine_diff_density_rms         0.279
_refine_ls_extinction_coef       0.0172(11)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.075
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     815
_refine_ls_number_reflns         9627
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.075
_refine_ls_R_factor_all          0.1626
_refine_ls_R_factor_gt           0.0910
_refine_ls_shift/su_max          0.696
_refine_ls_shift/su_mean         0.042
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1500P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2188
_refine_ls_wR_factor_ref         0.2751
_reflns_number_gt                5190
_reflns_number_total             9627
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic026182a-2_s2_3.cif
_cod_data_source_block           jt627s10
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_original_formula_sum        'C38.50 H40.50 N6 Ta'
_cod_database_code               4313003