Steric Effects in Reactions of Decamethyltitanocene Hydride with Internal Alkynes, Conjugated Diynes, and Conjugated Dienes
Pinkas, Jiří; Gyepes, Róbert; Císařová, Ivana; Kubišta, Jiří; Horáček, Michal; Mach, Karel; Organometallics  (2014) 140702161538000–; doi:10.1021/om500296h

data_4083876
_publ_section_title
;
 Steric Effects in Reactions of Decamethyltitanocene Hydride with
 Internal Alkynes, Conjugated Diynes, and Conjugated Dienes
;
_journal_name_full               Organometallics
_journal_page_first              140702161538000
_journal_paper_doi               10.1021/om500296h
_journal_year                    2014
_chemical_formula_moiety         'C28 H49 Si2 Ti'
_chemical_formula_sum            'C28 H49 Si2 Ti'
_chemical_formula_weight         489.75
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                79.4900(10)
_cell_angle_beta                 75.6070(10)
_cell_angle_gamma                74.4060(10)
_cell_formula_units_Z            2
_cell_length_a                   8.9630(3)
_cell_length_b                   10.1317(3)
_cell_length_c                   17.1548(6)
_cell_measurement_reflns_used    5390
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      25.94
_cell_measurement_theta_min      2.303
_cell_volume                     1442.20(8)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0378
_diffrn_reflns_av_sigmaI/netI    0.0487
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            18694
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         1.23
_exptl_absorpt_coefficient_mu    0.393
_exptl_absorpt_correction_T_max  0.9193
_exptl_absorpt_correction_T_min  0.8641
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            brown-red
_exptl_crystal_density_diffrn    1.128
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             534
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.380
_refine_diff_density_min         -0.312
_refine_diff_density_rms         0.054
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     299
_refine_ls_number_reflns         5678
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.030
_refine_ls_R_factor_all          0.0628
_refine_ls_R_factor_gt           0.0404
_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^)+(0.0528P)^2^+0.2492P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0943
_refine_ls_wR_factor_ref         0.1025
_reflns_number_gt                4295
_reflns_number_total             5678
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om500296h_si_001.cif
_cod_data_source_block           4a
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4083876