Tungsten(II) Monocarbonyl Bis(acetylacetonate): A Fourteen-Electron Docking Site for η2Four-Electron Donor Ligands
Andrew B. Jackson; Cynthia K. Schauer; Peter S. White; Joseph L. Templeton; Journal of the American Chemical Society 129 (2007) 10628–10629; doi:10.1021/ja0728270

data_4109866
_publ_section_title
;
 Tungsten(II) Monocarbonyl Bis(acetylacetonate): A Fourteen-Electron
 Docking Site for \h2Four-Electron Donor Ligands
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              10628
_journal_page_last               10629
_journal_paper_doi               10.1021/ja0728270
_journal_volume                  129
_journal_year                    2007
_chemical_formula_moiety         'C14 H20 O6 W'
_chemical_formula_sum            'C14 H20 O6 W'
_chemical_formula_weight         468.15
_chemical_name_systematic
;

 ?

;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 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                   8.9457(1)
_cell_length_b                   13.5475(2)
_cell_length_c                   26.6866(4)
_cell_measurement_reflns_used    9912
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.55
_cell_measurement_theta_min      2.40
_cell_volume                     3234.20(8)
_computing_cell_refinement       'Bruker APEX2'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker-AXS SMART APEX-II CCD area detector'
_diffrn_measurement_method       'omega 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  0.0470
_diffrn_reflns_av_sigmaI/netI    0.0588
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -37
_diffrn_reflns_number            23675
_diffrn_reflns_theta_full        30.00
_diffrn_reflns_theta_max         30.00
_diffrn_reflns_theta_min         1.53
_exptl_absorpt_coefficient_mu    7.166
_exptl_absorpt_correction_T_max  0.5343
_exptl_absorpt_correction_T_min  0.2674
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            clear
_exptl_crystal_density_diffrn    1.923
_exptl_crystal_description       block
_exptl_crystal_F_000             1808
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         1.583
_refine_diff_density_min         -2.175
_refine_diff_density_rms         0.179
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.025(14)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.107
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     391
_refine_ls_number_reflns         9361
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.107
_refine_ls_R_factor_all          0.0516
_refine_ls_R_factor_gt           0.0437
_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^)+(0.0000P)^2^+22.3680P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0898
_refine_ls_wR_factor_ref         0.0929
_reflns_number_gt                8202
_reflns_number_total             9361
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja0728270si20070419_040742.cif
_cod_data_source_block           c07226
_cod_database_code               4109866