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_4069030
_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         'C38 H45 O Si Ti'
_chemical_formula_sum            'C38 H45 O Si Ti'
_chemical_formula_weight         593.73
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   difmap
_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            8
_cell_length_a                   20.6532(2)
_cell_length_b                   14.3925(2)
_cell_length_c                   22.6067(3)
_cell_measurement_reflns_used    8412
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      1
_cell_volume                     6719.87(14)
_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 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.060
_diffrn_reflns_av_sigmaI/netI    0.0317
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            84166
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         1.95
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.318
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.174
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       irregular
_exptl_crystal_F_000             2536
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.367
_refine_diff_density_min         -0.321
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.035
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     380
_refine_ls_number_reflns         7704
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.0659
_refine_ls_R_factor_gt           0.0422
_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^)+(0.0498P)^2^+3.9180P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1026
_refine_ls_wR_factor_ref         0.1168
_reflns_number_gt                5721
_reflns_number_total             7704
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            om801209f_si_001.cif
_cod_data_source_block           jednosiph-mach_structure_3
_cod_database_code               4069030