Reduction-Induced Cyclization and Redox Reactions of Fully Methylated Titanocene Dichlorides Bearing Pendant Alkenyldimethylsilyl Groups, [TiCl2{η5-C5Me4(SiMe2R)}2] (R = Vinyl and Allyl)
Lukešová, Lenka; Štěpnička, Petr; Fejfarová, Karla; Gyepes, Róbert; Císařová, Ivana; Horáček, Michal; Kubišta, Jiří; Mach, Karel; Organometallics 21 (2002) 2639–; doi:10.1021/om020150d

data_4076857
_publ_section_title
;
 Reduction-Induced Cyclization and Redox Reactions of Fully Methylated
 Titanocene Dichlorides Bearing Pendant Alkenyldimethylsilyl Groups,
 [TiCl2{\h5-C5Me4(SiMe2R)}2] (R = Vinyl and Allyl)
;
_journal_issue                   13
_journal_name_full               Organometallics
_journal_page_first              2639
_journal_paper_doi               10.1021/om020150d
_journal_volume                  21
_journal_year                    2002
_chemical_formula_sum            'C26 H41 Cl Si2 Ti'
_chemical_formula_weight         493.12
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_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                 109.099(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.6141(3)
_cell_length_b                   16.0382(8)
_cell_length_c                   9.9644(3)
_cell_measurement_reflns_used    18801
_cell_measurement_temperature    150
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      1.0
_cell_volume                     1300.85(9)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'COLLECT (Nonius BV, 1997-2000)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR-92 (Giacovazzo, 1994)'
_diffrn_ambient_temperature      150
_diffrn_detector_area_resol_mean 0.110
_diffrn_measured_fraction_theta_full 0.986
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method
;
 CCD
 (rotation scans to fill Ewald sphere,
 192 frames: rotation 1.8\% \%w and 180 s each;
 13333 integrated diffractions)
;
_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  0.065
_diffrn_reflns_av_sigmaI/netI    0.0406
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            5515
_diffrn_reflns_theta_full        27.51
_diffrn_reflns_theta_max         27.51
_diffrn_reflns_theta_min         3.34
_exptl_absorpt_coefficient_mu    0.535
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.259
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'irregular fragment'
_exptl_crystal_F_000             528
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.456
_refine_diff_density_min         -0.485
_refine_diff_density_rms         0.067
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.04(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.066
_refine_ls_hydrogen_treatment    fixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     270
_refine_ls_number_reflns         5515
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.066
_refine_ls_R_factor_all          0.0510
_refine_ls_R_factor_gt           0.0449
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0542P)^2^+1.3995P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1133
_refine_ls_wR_factor_ref         0.1183
_reflns_number_gt                5134
_reflns_number_total             5515
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om020150d.cif
_cod_data_source_block           structure_8
_cod_original_sg_symbol_H-M      P21
_cod_database_code               4076857