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_4331581
_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            'C31.5 H49 Cl N4 O Si2 W'
_chemical_formula_weight         775.23
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           29
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2b'
_symmetry_space_group_name_H-M   'P b c 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   9.3024(4)
_cell_length_b                   23.5665(10)
_cell_length_c                   31.9975(14)
_cell_measurement_temperature    141(2)
_cell_volume                     7014.7(5)
_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 1.00
_diffrn_measured_fraction_theta_max 0.944
_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  0.0417
_diffrn_reflns_av_sigmaI/netI    0.0541
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       30
_diffrn_reflns_limit_k_min       -31
_diffrn_reflns_limit_l_max       43
_diffrn_reflns_limit_l_min       -41
_diffrn_reflns_number            43847
_diffrn_reflns_theta_full        25.0
_diffrn_reflns_theta_max         28.89
_diffrn_reflns_theta_min         1.27
_diffrn_standards_decay_%        '< 2'
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    3.467
_exptl_absorpt_correction_T_max  0.54
_exptl_absorpt_correction_T_min  0.31
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.468
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'multifaceted block'
_exptl_crystal_F_000             3144
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.18
_refine_diff_density_max         1.537
_refine_diff_density_min         -0.841
_refine_diff_density_rms         0.113
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.180(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     761
_refine_ls_number_reflns         16526
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.026
_refine_ls_R_factor_all          0.0391
_refine_ls_R_factor_gt           0.0330
_refine_ls_shift/su_max          0.042
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0381P)^2^+3.3258P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0778
_refine_ls_wR_factor_ref         0.0822
_reflns_number_gt                14637
_reflns_number_total             16526
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic0511367sup1.cif
_cod_data_source_block           compound10
_cod_original_formula_sum        'C31.50 H49 Cl N4 O Si2 W'
_cod_database_code               4331581