Cp<sub>2</sub>Ti(κ<sup>2</sup><i>-</i><sup> <i>t</i> </sup>BuNCN<sup> <i>t</i> </sup>Bu): A Complex with an Unusual κ<sup>2</sup> Coordination Mode of a Heterocumulene Featuring a Free Carbene.
Beaumier, Evan P.; Gordon, Christopher P.; Harkins, Robin P.; McGreal, Meghan E.; Wen, Xuelan; Copéret, Christophe; Goodpaster, Jason D.; Tonks, Ian A.; Journal of the American Chemical Society 142 (2020) 8006–8018; doi:10.1021/jacs.0c02487

data_4134705
_publ_section_title
;
 Cp<sub>2</sub>Ti(\k<sup>2</sup><i>-</i><sup> <i>t</i> </sup>BuNCN<sup>
 <i>t</i> </sup>Bu): A Complex with an Unusual \k<sup>2</sup> Coordination
 Mode of a Heterocumulene Featuring a Free Carbene.
;
_journal_issue                   17
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              8006
_journal_page_last               8018
_journal_paper_doi               10.1021/jacs.0c02487
_journal_volume                  142
_journal_year                    2020
_chemical_formula_moiety         C19TiN2H28
_chemical_formula_sum            'C19 H28 N2 Ti'
_chemical_formula_weight         332.33
_chemical_name_common            Cp2TitBuNCNtBu
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 112.358(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   15.4192(7)
_cell_length_b                   8.5253(4)
_cell_length_c                   14.8104(7)
_cell_measurement_reflns_used    9937
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.54
_cell_measurement_theta_min      2.77
_cell_volume                     1800.52(15)
_computing_cell_refinement       'SAINT, Bruker'
_computing_data_collection       'SMART, Bruker'
_computing_data_reduction        'SAINT, Bruker'
_computing_molecular_graphics    'SHELXTL, Bruker'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART Platform CCD'
_diffrn_measurement_method       'area detector, omega scans per phi'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0534
_diffrn_reflns_av_unetI/netI     0.0182
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            77185
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.587
_diffrn_reflns_theta_min         2.767
_diffrn_source                   fine
_exptl_absorpt_coefficient_mu    0.474
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_correction_T_min  0.6998
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, R. Blessing, 1995'
_exptl_crystal_colour            Red
_exptl_crystal_density_diffrn    1.226
_exptl_crystal_description       Plates
_exptl_crystal_F_000             712
_exptl_crystal_size_max          0.120
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.040
_refine_diff_density_max         0.474
_refine_diff_density_min         -0.474
_refine_diff_density_rms         0.050
_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     205
_refine_ls_number_reflns         5519
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_all          0.0349
_refine_ls_R_factor_gt           0.0287
_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^)+(0.0385P)^2^+0.7893P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0771
_refine_ls_wR_factor_ref         0.0803
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4863
_reflns_number_total             5519
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja0c02487_si_003.cif
_cod_data_source_block           19026_a
_cod_depositor_comments
'Adding full bibliography for 4134704--4134710.cif.'
_cod_original_sg_symbol_H-M      'P 2(1)/c'
_cod_database_code               4134705
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.945
_shelx_estimated_absorpt_t_max   0.981
_shelx_res_checksum              58057
_shelx_hkl_checksum              80879