Reactions of Hydrido(hydrosilylene)tungsten Complexes with α,β-Unsaturated Carbonyl Compounds: Selective Formation of (η3-Siloxyallyl)tungsten Complexes
Takahito Watanabe; Hisako Hashimoto; Hiromi Tobita; Journal of the American Chemical Society 129 (2007) 11338–11339; doi:10.1021/ja074629e

data_4109951
_publ_contact_author_address
;
    ENTER CONTACT AUTHOR ADDRESS
;
_publ_contact_author_email       hhashimoto@mail.tains.tohoku.ac.jp
_publ_contact_author_name        'Hisako Hashimoto'
_publ_section_title
;
 Reactions of Hydrido(hydrosilylene)tungsten Complexes with
 \a,\b-Unsaturated Carbonyl Compounds: Selective Formation of
 (\h3-Siloxyallyl)tungsten Complexes
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              11338
_journal_page_last               11339
_journal_paper_doi               10.1021/ja074629e
_journal_volume                  129
_journal_year                    2007
_chemical_formula_moiety         'C27 H52 O4 Si4 W'
_chemical_formula_sum            'C27 H52 O4 Si4 W'
_chemical_formula_weight         736.90
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     heavy
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 96.0911(14)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.8185(5)
_cell_length_b                   25.7459(8)
_cell_length_c                   14.5946(7)
_cell_measurement_reflns_used    26934
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.46
_cell_measurement_theta_min      0.80
_cell_volume                     3294.9(3)
_computing_cell_refinement       PROCESS-AUTO
_computing_data_collection       PROCESS-AUTO
_computing_data_reduction        'teXsan Ver. 1.11'
_computing_molecular_graphics    ORTEP
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 10
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'Rigaku RAXIS-RAPID Imaging Plate'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating-anode X-ray tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0677
_diffrn_reflns_av_sigmaI/netI    0.0386
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       30
_diffrn_reflns_limit_k_min       -33
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            28647
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         1.58
_exptl_absorpt_coefficient_mu    3.680
_exptl_absorpt_correction_T_max  0.6083
_exptl_absorpt_correction_T_min  0.3591
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details   'NUMABS (Higashi, 1999)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.486
_exptl_crystal_description       platelet
_exptl_crystal_F_000             1504
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.15
_refine_diff_density_max         4.290
_refine_diff_density_min         -1.886
_refine_diff_density_rms         0.213
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.247
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     346
_refine_ls_number_reflns         7454
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.247
_refine_ls_R_factor_all          0.0575
_refine_ls_R_factor_gt           0.0505
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0489P)^2^+23.6845P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1292
_refine_ls_wR_factor_ref         0.1375
_reflns_number_gt                6748
_reflns_number_total             7454
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja074629esi20070809_060846.cif
_cod_data_source_block           complex4b
_cod_database_code               4109951