Stable coordination complexes of α-diimines with Nb(v) and Ta(v) halides.
Bartalucci, Niccolò; Bortoluzzi, Marco; Pampaloni, Guido; Pinzino, Calogero; Zacchini, Stefano; Marchetti, Fabio; Dalton transactions (Cambridge, England : 2003) 47 (2018) 3346–3355; doi:10.1039/c8dt00122g

data_7045589
_publ_section_title
;
 Stable coordination complexes of \a-diimines with Nb(v) and Ta(v)
 halides.
;
_journal_issue                   10
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              3346
_journal_page_last               3355
_journal_paper_doi               10.1039/c8dt00122g
_journal_volume                  47
_journal_year                    2018
_chemical_formula_sum            'C27 H37 Cl10 N2 Ta'
_chemical_formula_weight         925.03
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2018-01-04 deposited with the CCDC.
2018-01-24 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 97.508(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.9501(4)
_cell_length_b                   19.2803(7)
_cell_length_c                   18.9646(7)
_cell_measurement_reflns_used    3395
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      21.3005
_cell_measurement_theta_min      2.319
_cell_volume                     3607.0(2)
_computing_cell_refinement       'APEX3 (Bruker AXS, 2015)'
_computing_data_collection       'APEX3 (Bruker AXS, 2015)'
_computing_data_reduction        'SAINT (Bruker AXS, 2015)'
_computing_molecular_graphics    'ORTEPIII (Johnson, 1996)'
_computing_publication_material  'XCIF 2014/2 (Bruker AXS, 2014)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.2112
_diffrn_reflns_av_unetI/netI     0.1396
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            33961
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        23.533
_diffrn_reflns_theta_max         23.533
_diffrn_reflns_theta_min         1.513
_exptl_absorpt_coefficient_mu    3.810
_exptl_absorpt_correction_T_max  0.7019
_exptl_absorpt_correction_T_min  0.6176
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
; 
 Data were corrected for Lorentz polarization and absorption
 effects (empirical absorption correction SADABS).
 R(int) =  0.1118 (selected reflections only, before parameter refinement)
 R(int) =  0.0765 (selected reflections only, after parameter refinement)
;
_exptl_crystal_colour            orange-red
_exptl_crystal_density_diffrn    1.703
_exptl_crystal_description       plate
_exptl_crystal_F_000             1824
_exptl_crystal_size_max          0.140
_exptl_crystal_size_mid          0.120
_exptl_crystal_size_min          0.100
_refine_diff_density_max         1.844
_refine_diff_density_min         -1.580
_refine_diff_density_rms         0.194
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.020
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     364
_refine_ls_number_reflns         5356
_refine_ls_number_restraints     7
_refine_ls_restrained_S_all      1.020
_refine_ls_R_factor_all          0.1576
_refine_ls_R_factor_gt           0.0696
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0993P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1654
_refine_ls_wR_factor_ref         0.2077
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2842
_reflns_number_total             5356
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8dt00122g2.cif
_cod_data_source_block           4b_bis
_cod_depositor_comments
'Adding full bibliography for 7045585--7045593.cif.'
_cod_database_code               7045589
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.618
_shelx_estimated_absorpt_t_max   0.702
_shelx_res_checksum              60196