Formation of a Cationic Vinylimido Group upon C-H Activation of Nitriles by Trialkylamines in the Presence of TaCl5.
Rahman, Md Mamdudur; Smith, Mark D.; Peryshkov, Dmitry V.; Inorganic chemistry 55 (2016) 5101–5103; doi:10.1021/acs.inorgchem.6b00677

data_4347834
_publ_section_title
;
 Formation of a Cationic Vinylimido Group upon C-H Activation of Nitriles
 by Trialkylamines in the Presence of TaCl5.
;
_journal_issue                   11
_journal_name_full               'Inorganic chemistry'
_journal_page_first              5101
_journal_page_last               5103
_journal_paper_doi               10.1021/acs.inorgchem.6b00677
_journal_volume                  55
_journal_year                    2016
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C11 H22 Cl4 N3 Ta'
_chemical_formula_sum            'C11 H22 Cl4 N3 Ta'
_chemical_formula_weight         519.06
_space_group_crystal_system      orthorhombic
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     heavy
_audit_creation_date             2015-02-13
_audit_creation_method
;
Olex2 1.2
(compiled 2015.01.26 svn.r3150 for OlexSys, GUI svn.r4998)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   15.0296(8)
_cell_length_b                   8.6155(4)
_cell_length_c                   13.6508(7)
_cell_measurement_reflns_used    9680
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.058
_cell_measurement_theta_min      2.364
_cell_volume                     1767.61(15)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_collection       'Bruker APEXII v2014.9-0 (Bruker, 2014)'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'XS (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'Bruker PHOTON-100 area detector'
_diffrn_detector_type            'CMOS area detector'
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker D8 QUEST'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0303
_diffrn_reflns_av_unetI/netI     0.0151
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            52526
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        30.050
_diffrn_reflns_theta_max         30.089
_diffrn_reflns_theta_min         2.710
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_type              'Incoatec I\ms'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    6.814
_exptl_absorpt_correction_T_max  0.3807
_exptl_absorpt_correction_T_min  0.2456
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2014/4 (Bruker,2014/4) was used for absorption correction.
wR2(int) was 0.0861 before and 0.0460 after correction.
The Ratio of minimum to maximum transmission is 0.6451.
The \l/2 correction factor is 0.00150.
;
_exptl_crystal_colour            yellow
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.950
_exptl_crystal_description       block
_exptl_crystal_F_000             1000
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.874
_refine_diff_density_min         -0.465
_refine_diff_density_rms         0.090
_refine_ls_abs_structure_details
;
 Flack x determined using 2425 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.013(3)
_refine_ls_extinction_coef       0.00408(13)
_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   1.126
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     178
_refine_ls_number_reflns         5189
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.126
_refine_ls_R_factor_all          0.0130
_refine_ls_R_factor_gt           0.0127
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0171P)^2^+0.3136P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0308
_refine_ls_wR_factor_ref         0.0310
_reflns_Friedel_coverage         0.923
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.998
_reflns_number_gt                5116
_reflns_number_total             5189
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ic6b00677_si_002.cif
_cod_data_source_block           md2023a
_cod_database_code               4347834
_shelxl_version_number           2014/6
_shelx_estimated_absorpt_t_max   0.549
_shelx_estimated_absorpt_t_min   0.373
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C4(H4A,H4B), C6(H6A,H6B), C8(H8A,H8B)
2.b Aromatic/amide H refined with riding coordinates:
 C2(H2)
2.c Idealised Me refined as rotating group:
 C3(H3A,H3B,H3C), C5(H5A,H5B,H5C), C7(H7A,H7B,H7C), C9(H9A,H9B,H9C), C11(H11A,
 H11B,H11C)
;
_shelx_res_checksum              9626
_shelx_hkl_checksum              10505
_olex2_submission_special_instructions 'No special instructions were received'