Evaluation of the Oxygen π-Donation in Permethyltitanocene Silanolates and Alcoholates
Varga, Vojtech; Císařová, Ivana; Gyepes, Róbert; Horáček, Michal; Kubišta, Jiří; Mach, Karel; Organometallics 28 (2009) 1748–; doi:10.1021/om801209f

data_4069029
_publ_section_title
;
 Evaluation of the Oxygen \p-Donation in Permethyltitanocene Silanolates
 and Alcoholates
;
_journal_issue                   6
_journal_name_full               Organometallics
_journal_page_first              1748
_journal_paper_doi               10.1021/om801209f
_journal_volume                  28
_journal_year                    2009
_chemical_compound_source        'synthesized by the authors'
_chemical_formula_moiety         'C29 H51 O Si Ti'
_chemical_formula_sum            'C29 H51 O Si Ti'
_chemical_formula_weight         491.69
_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                92.0898(13)
_cell_angle_beta                 90.2051(16)
_cell_angle_gamma                94.6256(16)
_cell_formula_units_Z            4
_cell_length_a                   11.8550(3)
_cell_length_b                   14.9147(4)
_cell_length_c                   16.2430(4)
_cell_measurement_reflns_used    9630
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      25.0
_cell_measurement_theta_min      1
_cell_volume                     2860.67(13)
_computing_cell_refinement       'COLLECT and DENZO'
_computing_data_collection
'COLLECT (Hooft, 1998) and DENZO (Otwinowski & Minor, 1997)'
_computing_data_reduction        'COLLECT and DENZO'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'Nonius KappaCCD area detector'
_diffrn_measurement_method       '\f and \w scans to fill the Ewald sphere'
_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  0.056
_diffrn_reflns_av_sigmaI/netI    0.0475
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            40988
_diffrn_reflns_theta_full        25.10
_diffrn_reflns_theta_max         25.10
_diffrn_reflns_theta_min         1.82
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.359
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            braun
_exptl_crystal_density_diffrn    1.142
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       irregular
_exptl_crystal_F_000             1076
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.867
_refine_diff_density_min         -0.451
_refine_diff_density_rms         0.077
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.121
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     611
_refine_ls_number_reflns         10062
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.121
_refine_ls_R_factor_all          0.0784
_refine_ls_R_factor_gt           0.0654
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0526P)^2^+5.7981P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1600
_refine_ls_wR_factor_ref         0.1684
_reflns_number_gt                8546
_reflns_number_total             10062
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om801209f_si_001.cif
_cod_data_source_block           titiipsio-twin-mach_structure_2
_cod_database_code               4069029