Coupling of an Aldehyde or Ketone to Pyridine Mediated by a Tungsten Imido Complex
Hayton, Trevor W.; Boncella, James M.; Scott, Brian L.; Abboud, Khalil A.; Mills, Ryan C.; Inorganic Chemistry 44 (2005) 9506–9517; doi:10.1021/ic0511367

data_4331580
_publ_section_title
;
 Coupling of an Aldehyde or Ketone to Pyridine Mediated by a Tungsten
 Imido Complex
;
_journal_issue                   25
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              9506
_journal_page_last               9517
_journal_paper_doi               10.1021/ic0511367
_journal_volume                  44
_journal_year                    2005
_chemical_formula_sum            'C35.5 H58 N4 O2 Si2 W'
_chemical_formula_weight         812.89
_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                103.360(1)
_cell_angle_beta                 93.943(1)
_cell_angle_gamma                115.795(1)
_cell_formula_units_Z            2
_cell_length_a                   10.1728(9)
_cell_length_b                   10.9145(1)
_cell_length_c                   20.648(2)
_cell_measurement_temperature    141(2)
_cell_volume                     1970.4(3)
_computing_cell_refinement       'SAINT+, v. 7.06 (Bruker AXS, 2001)'
_computing_data_collection       'APEX II, v. 1.08 (Bruker AXS, 2003)'
_computing_data_reduction        'SAINT+, v. 7.06 (Bruker AXS, 2001)'
_computing_molecular_graphics    'SHELXTL, v. 6.10, (Bruker AXS, 2000)'
_computing_publication_material  'SHELXTL, v. 6.10, (Bruker AXS, 2000)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      141(2)
_diffrn_measured_fraction_theta_full 0.976
_diffrn_measured_fraction_theta_max 0.908
_diffrn_measurement_device_type  'Bruker D8 with APEXII CCD'
_diffrn_measurement_method       '\w scans'
_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  0.0192
_diffrn_reflns_av_sigmaI/netI    0.0286
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            15806
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.30
_diffrn_reflns_theta_min         1.03
_diffrn_standards_decay_%        '< 2'
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    3.026
_exptl_absorpt_correction_T_max  0.54
_exptl_absorpt_correction_T_min  0.30
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.370
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             834
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.20
_refine_diff_density_max         1.831
_refine_diff_density_min         -1.408
_refine_diff_density_rms         0.115
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     426
_refine_ls_number_reflns         8897
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0271
_refine_ls_R_factor_gt           0.0253
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0450P)^2^+1.9216P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0676
_refine_ls_wR_factor_ref         0.0711
_reflns_number_gt                8431
_reflns_number_total             8897
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic0511367sup1.cif
_cod_data_source_block           compound6
_cod_original_formula_sum        'C35.50 H58 N4 O2 Si2 W'
_cod_database_code               4331580