C-H Activation and Proton Transfer Initiate Alkene Metathesis Activity of the Tungsten(IV)-Oxo Complex.
Chan, Ka Wing; Lam, Erwin; D'Anna, Vincenza; Allouche, Florian; Michel, Carine; Safonova, Olga V.; Sautet, Philippe; Copéret, Christophe; Journal of the American Chemical Society 140 (2018) 11395–11401; doi:10.1021/jacs.8b06603

data_4132793
_publ_section_title
;
 C-H Activation and Proton Transfer Initiate Alkene Metathesis Activity of
 the Tungsten(IV)-Oxo Complex.
;
_journal_issue                   36
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              11395
_journal_page_last               11401
_journal_paper_doi               10.1021/jacs.8b06603
_journal_volume                  140
_journal_year                    2018
_chemical_formula_moiety         'C20 H20 F12 N2 O3 W'
_chemical_formula_sum            'C20 H20 F12 N2 O3 W'
_chemical_formula_weight         748.23
_chemical_name_systematic        WO(OtBuF6)2(pyr)2(ethylene)
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     dual
_audit_creation_date             2017-09-04
_audit_creation_method
;
Olex2 1.2
(compiled 2017.08.10 svn.r3458 for OlexSys, GUI svn.r5381)
;
_cell_angle_alpha                90
_cell_angle_beta                 93.7910(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.9222(6)
_cell_length_b                   15.4195(10)
_cell_length_c                   15.5790(10)
_cell_measurement_reflns_used    9169
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.84
_cell_measurement_theta_min      2.36
_cell_volume                     2378.3(3)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'Bruker APEX2 area detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CCD area detector'
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker SMART APEX2 area detector'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0487
_diffrn_reflns_av_unetI/netI     0.0342
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            33303
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.340
_diffrn_reflns_theta_min         1.860
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_type              'Incoatec I\ms'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    4.978
_exptl_absorpt_correction_T_max  0.7457
_exptl_absorpt_correction_T_min  0.4690
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2012/1 (Bruker,2012) was used for absorption correction. wR2(int) was 0.1336 before and 0.0543 after correction. The Ratio of minimum to maximum transmission is 0.6289. The \l/2 correction factor is 0.0015.'
_exptl_crystal_colour            'clear light yellow'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    2.090
_exptl_crystal_description       block
_exptl_crystal_F_000             1440
_exptl_crystal_recrystallization_method
'crystallized from a saturated solution in pentane.'
_exptl_crystal_size_max          0.55
_exptl_crystal_size_mid          0.34
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.852
_refine_diff_density_min         -0.455
_refine_diff_density_rms         0.113
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     423
_refine_ls_number_reflns         5945
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.0286
_refine_ls_R_factor_gt           0.0217
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0166P)^2^+0.7804P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0440
_refine_ls_wR_factor_ref         0.0462
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5104
_reflns_number_total             5945
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja8b06603_si_006.cif
_cod_data_source_block           fa
_cod_database_code               4132793
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_max   0.381
_shelx_estimated_absorpt_t_min   0.170
_olex2_refinement_description
;
;
_olex2_exptl_crystal_mounting_method 'mounted in paratone oil.'
_olex2_submission_special_instructions 'No special instructions were received'