Reactions of Titanocene Bis(trimethylsilyl)acetylene Complexes with Carbodiimides: An Experimental and Theoretical Study of Complexation versus C-N Bond Activation
Martin Haehnel; Martin Ruhmann; Oliver Theilmann; Subhendu Roy; Torsten Beweries; Perdita Arndt; Anke Spannenberg; Alexander Villinger; Eluvathingal D. Jemmis; Axel Schulz; Uwe Rosenthal; Journal of the American Chemical Society 134 (2012) 15979–15991; doi:10.1021/ja3070649

data_4118681
_publ_section_title
;
 Reactions of Titanocene Bis(trimethylsilyl)acetylene Complexes with
 Carbodiimides: An Experimental and Theoretical Study of Complexation
 versus C-N Bond Activation
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              15979
_journal_page_last               15991
_journal_paper_doi               10.1021/ja3070649
_journal_volume                  134
_journal_year                    2012
_chemical_formula_sum            'C32 H47 N Ti'
_chemical_formula_weight         493.61
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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            4
_cell_length_a                   10.7229(2)
_cell_length_b                   16.2730(3)
_cell_length_c                   16.3219(3)
_cell_measurement_reflns_used    901
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      29.34
_cell_measurement_theta_min      2.51
_cell_volume                     2848.07(9)
_computing_cell_refinement       'SAINT V7.68A (Bruker AXS, 2009)'
_computing_data_collection       'APEX2 V2011.4-1 (Bruker AXS, 2011)'
_computing_data_reduction        'SAINT V7.68A (Bruker AXS, 2009)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker Kappa APEX II Duo'
_diffrn_measurement_method       'omega and phi scans'
_diffrn_radiation_monochromator  'curved graphite'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0298
_diffrn_reflns_av_sigmaI/netI    0.0206
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            48630
_diffrn_reflns_theta_full        27.88
_diffrn_reflns_theta_max         27.88
_diffrn_reflns_theta_min         1.77
_exptl_absorpt_coefficient_mu    0.320
_exptl_absorpt_correction_T_max  0.9482
_exptl_absorpt_correction_T_min  0.8387
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2008/1 (Bruker AXS)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.151
_exptl_crystal_description       prism
_exptl_crystal_F_000             1072
_exptl_crystal_size_max          0.57
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.423
_refine_diff_density_min         -0.196
_refine_diff_density_rms         0.046
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.009(18)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.056
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     321
_refine_ls_number_reflns         6792
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.056
_refine_ls_R_factor_all          0.0384
_refine_ls_R_factor_gt           0.0348
_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^)+(0.0606P)^2^+0.4859P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0928
_refine_ls_wR_factor_ref         0.0955
_reflns_number_gt                6360
_reflns_number_total             6792
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja3070649_si_006.cif
_cod_data_source_block           ax0048
_cod_database_code               4118681