Origins of initiation rate differences in ruthenium olefin metathesis catalysts containing chelating benzylidenes.
Engle, Keary M.; Lu, Gang; Luo, Shao-Xiong; Henling, Lawrence M.; Takase, Michael K.; Liu, Peng; Houk, K. N.; Grubbs, Robert H.; Journal of the American Chemical Society 137 (2015) 5782–5792; doi:10.1021/jacs.5b01144

data_4129359
_publ_section_title
;
 Origins of initiation rate differences in ruthenium olefin metathesis
 catalysts containing chelating benzylidenes.
;
_journal_issue                   17
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              5782
_journal_page_last               5792
_journal_paper_doi               10.1021/jacs.5b01144
_journal_volume                  137
_journal_year                    2015
_chemical_formula_sum            'C31 H36 Cl2 N2 O Ru'
_chemical_formula_weight         624.59
_space_group_crystal_system      orthorhombic
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2013
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   22.9578(5)
_cell_length_b                   10.1978(2)
_cell_length_c                   24.6180(6)
_cell_measurement_reflns_used    9867
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.47
_cell_measurement_theta_min      2.34
_cell_volume                     5763.5(2)
_computing_cell_refinement       'SAINT v8.32B (Bruker-AXS, 2011)'
_computing_data_collection       'APEX2 v2013.6-2 (Bruker-AXS, 2013)'
_computing_data_reduction        'SAINT v8.32B (Bruker-AXS, 2011)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 8.33
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0818
_diffrn_reflns_av_unetI/netI     0.0583
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       32
_diffrn_reflns_limit_h_min       -32
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            113002
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.539
_diffrn_reflns_theta_min         1.654
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.756
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_correction_T_min  0.6685
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2009)'
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.440
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2576
_exptl_crystal_size_max          0.150
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.100
_refine_diff_density_max         2.769
_refine_diff_density_min         -0.576
_refine_diff_density_rms         0.117
_refine_ls_abs_structure_details
; 
 Flack x determined using 6492 quotients [(I+)-(I-)]/[(I+)+(I-)] 
 (Parsons and Flack (2004), Acta Cryst. A60, s61). 
;
_refine_ls_abs_structure_Flack   0.172(14)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.072
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     679
_refine_ls_number_reflns         17586
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.072
_refine_ls_R_factor_all          0.0587
_refine_ls_R_factor_gt           0.0461
_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^)+(0.0490P)^2^+4.2265P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0991
_refine_ls_wR_factor_ref         0.1043
_reflns_Friedel_coverage         0.954
_reflns_Friedel_fraction_full    0.995
_reflns_Friedel_fraction_max     0.994
_reflns_number_gt                15240
_reflns_number_total             17586
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja5b01144_si_003.cif
_cod_data_source_block           A13226
_cod_database_code               4129359
_shelx_estimated_absorpt_t_min   0.895
_shelx_estimated_absorpt_t_max   0.928
_shelxl_version_number           2013-3
_shelx_res_checksum              95505
_shelx_hkl_checksum              88974