Syntheses of Molybdenum Oxo Benzylidene Complexes.
Zhai, Feng; Bukhryakov, Konstantin V.; Schrock, Richard R.; Hoveyda, Amir H.; Tsay, Charlene; Müller, Peter; Journal of the American Chemical Society 140 (2018) 13609–13613; doi:10.1021/jacs.8b09616

data_4133323
_publ_section_title
;
 Syntheses of Molybdenum Oxo Benzylidene Complexes.
;
_journal_issue                   42
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              13609
_journal_page_last               13613
_journal_paper_doi               10.1021/jacs.8b09616
_journal_volume                  140
_journal_year                    2018
_chemical_formula_moiety         'C56 H58 Mo O4, C6 H18 O Si2'
_chemical_formula_sum            'C62 H76 Mo O5 Si2'
_chemical_formula_weight         1053.34
_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   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2017/2
_cell_angle_alpha                90
_cell_angle_beta                 90.062(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.0925(7)
_cell_length_b                   15.0304(10)
_cell_length_c                   34.812(3)
_cell_measurement_reflns_used    9590
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      31.47
_cell_measurement_theta_min      2.28
_cell_volume                     5804.0(7)
_computing_cell_refinement       'SAINT 8.38A (Bruker-AXS, 2017)'
_computing_data_collection       'APEX3 v2017.3.0 (Bruker-AXS, 2017)'
_computing_data_reduction        'SAINT 8.38A (Bruker-AXS, 2017)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2017/2 (Sheldrick, 2017)'
_computing_structure_solution    'SHELXT-2015 (Sheldrick, 2015)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 7.4
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker Photon2 CPAD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0445
_diffrn_reflns_av_unetI/netI     0.0174
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       51
_diffrn_reflns_limit_l_min       -51
_diffrn_reflns_number            308954
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         31.506
_diffrn_reflns_theta_min         1.790
_diffrn_source
'I\mS micro-focus sealed tube, multilayer optics'
_exptl_absorpt_coefficient_mu    0.313
_exptl_absorpt_correction_T_max  0.7462
_exptl_absorpt_correction_T_min  0.6911
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Herbst-Irmer et al., 2015)'
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.205
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2232
_exptl_crystal_size_max          0.245
_exptl_crystal_size_mid          0.140
_exptl_crystal_size_min          0.085
_refine_diff_density_max         0.696
_refine_diff_density_min         -0.908
_refine_diff_density_rms         0.065
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.210
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1231
_refine_ls_number_reflns         19319
_refine_ls_number_restraints     4154
_refine_ls_restrained_S_all      1.128
_refine_ls_R_factor_all          0.0506
_refine_ls_R_factor_gt           0.0458
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0330P)^2^+5.5429P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1139
_refine_ls_wR_factor_ref         0.1162
_reflns_Friedel_coverage         0.000
_reflns_number_gt                17682
_reflns_number_total             19319
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja8b09616_si_003.cif
_cod_data_source_block           P18073
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4133323
_shelx_shelxl_version_number     2017/2
_shelx_estimated_absorpt_t_min   0.927
_shelx_estimated_absorpt_t_max   0.974
_shelx_res_checksum              66601
_shelx_hkl_checksum              66675