ansa-Cyclopentadienyl-Arene Tantalum Complexes: Structure and Reactivity of Neutral, Cationic, and Dicationic Derivatives
Otten, Edwin; Meetsma, Auke; Hessen, Bart; Organometallics 31 (2012) 6071–; doi:10.1021/om300421m

data_4079055
_publ_section_related_literature
;
;
_publ_section_title
;
 ansa-Cyclopentadienyl-Arene Tantalum Complexes: Structure and Reactivity
 of Neutral, Cationic, and Dicationic Derivatives
;
_journal_issue                   17
_journal_name_full               Organometallics
_journal_page_first              6071
_journal_paper_doi               10.1021/om300421m
_journal_volume                  31
_journal_year                    2012
_chemical_absolute_configuration ad.
_chemical_compound_source        'see text'
_chemical_formula_moiety         'C19 H26 Br Ta'
_chemical_formula_sum            'C19 H26 Br Ta'
_chemical_formula_weight         515.27
_chemical_name_systematic        ?
_space_group_IT_number           114
_symmetry_cell_setting           tetragonal
_symmetry_Int_Tables_number      114
_symmetry_space_group_name_Hall  'P -4 2n'
_symmetry_space_group_name_H-M   'P -4 21 c'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     heavy
_atom_sites_solution_secondary   direct
_audit_creation_date             '2007-09-05  08:04:05'
_audit_creation_method
;
 PLATON <TABLE ACC> option    (version :: 250307)
 SHELXL97-2 & Manual Editing 
;
_audit_update_record
;
?

2010-01-14 # Formatted by publCIF
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   14.9723(4)
_cell_length_b                   14.9723(4)
_cell_length_c                   15.2555(9)
_cell_measurement_reflns_used    7262
_cell_measurement_temperature    100(1)
_cell_measurement_theta_max      29.08
_cell_measurement_theta_min      2.67
_cell_volume                     3419.8(2)
_computing_cell_refinement       'SAINT-Plus (Bruker, 2007)'
_computing_data_collection       'SMART (Bruker, 2007)'
_computing_data_reduction        SAINT-Plus
_computing_molecular_graphics
;
 PLATON (Spek, 2003)
 PLUTO (Meetsma, 2007) 
;
_computing_publication_material  'PLATON (Spek, 2003)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution
;
 DIRDIF-99 (Beurskens et al., 1999)
;
_diffrn_ambient_temperature      100(1)
_diffrn_detector_area_resol_mean 66.06
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type
;
  Bruker Smart Apex; CCD area detector 
;
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_detector
;
  CCD area-detector
;
_diffrn_radiation_monochromator  'parallel mounted graphite'
_diffrn_radiation_source         'fine focus sealed Siemens Mo tube '
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0548
_diffrn_reflns_av_sigmaI/netI    0.0325
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            30178
_diffrn_reflns_reduction_process
;
 Intensity data were corrected for Lorentz and polarization
  effects, decay and absorption and reduced to F~o~^2^
  using SAINT-Plus & SADABS (Bruker, 2006).
;
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.27
_diffrn_reflns_theta_min         2.67
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    8.757
_exptl_absorpt_correction_T_max  0.4746
_exptl_absorpt_correction_T_min  0.0609
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS, (Bruker, 2007))'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    2.002
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       platelet
_exptl_crystal_F_000             1984
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.31
_exptl_crystal_size_min          0.10
_refine_diff_density_max         3.438
_refine_diff_density_min         -0.873
_refine_diff_density_rms         0.182
_refine_ls_abs_structure_details
;
  The absolute structure of the molecule actually chosen was
   determined by Flack's x-refinement.

   (Flack & Bernardinelli, 1999, 2000)
;
_refine_ls_abs_structure_Flack   0.016(14)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.042
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     195
_refine_ls_number_reflns         4247
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_all          0.0385
_refine_ls_R_factor_gt           0.0307
_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^)+(0.0367P)^2^+0.0P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0662
_refine_ls_wR_factor_ref         0.0693
_reflns_number_gt                3697
_reflns_number_total             4247
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            om300421m_si_001.cif
_cod_data_source_block           DATNAM
_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 1891 2012-01-12 08:04:46Z andrius 
;
_cod_database_code               4079055
_vrn_publ_code_frame_time_sec    10.0
_vrn_publ_code_meas_time_hour    7.7