New Tantalum Amido Complexes with Chelate Ligands as Metalorganic (MO) Precursors for Chemical Vapor Deposition (CVD) of Tantalum Nitride Thin Films
Chen, Tianniu; Xu, Chongying; Baum, Thomas H.; Stauf, Gregory T.; Roeder, Jeffrey F.; DiPasquale, Antonio G.; Rheingold, Arnold L.; Chemistry of Materials 22 (2010) 27–; doi:10.1021/cm9009767

data_4000927
_publ_section_title
;
 New Tantalum Amido Complexes with Chelate Ligands as Metalorganic (MO)
 Precursors for Chemical Vapor Deposition (CVD) of Tantalum Nitride Thin
 Films
;
_journal_issue                   1
_journal_name_full               'Chemistry of Materials'
_journal_page_first              27
_journal_paper_doi               10.1021/cm9009767
_journal_volume                  22
_journal_year                    2010
_chemical_formula_sum            'C17 H44 N7 Ta'
_chemical_formula_weight         527.54
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           135
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-P 4c 2ab'
_symmetry_space_group_name_H-M   'P 42/m b c'
_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            8
_cell_length_a                   17.835(2)
_cell_length_b                   17.835(2)
_cell_length_c                   14.457(2)
_cell_measurement_reflns_used    8387
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.08
_cell_measurement_theta_min      2.28
_cell_volume                     4598.6(10)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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      100(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.956
_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  0.0558
_diffrn_reflns_av_sigmaI/netI    0.0243
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            36788
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.22
_diffrn_reflns_theta_min         2.55
_exptl_absorpt_coefficient_mu    4.794
_exptl_absorpt_correction_T_max  0.3273
_exptl_absorpt_correction_T_min  0.2501
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.524
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2144
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.30
_refine_diff_density_max         2.020
_refine_diff_density_min         -1.231
_refine_diff_density_rms         0.184
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.072
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     129
_refine_ls_number_reflns         2828
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.072
_refine_ls_R_factor_all          0.0552
_refine_ls_R_factor_gt           0.0445
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0500P)^2^+40.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1109
_refine_ls_wR_factor_ref         0.1188
_reflns_number_gt                2440
_reflns_number_total             2828
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cm9009767_si_003.cif
_cod_data_source_block           atmi49a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        4598.9(10)
_cod_original_sg_symbol_H-M      P4(2)/mbc
_cod_database_code               4000927