Steric and Electronic Influences of Internal Alkynes on the Formation of Thorium Metallacycles: A Combined Experimental and Computational Study
Fang, Bo; Hou, Guohua; Zi, Guofu; Ding, Wanjian; Walter, Marc D.; Organometallics  (2016) –; doi:10.1021/acs.organomet.5b00945

data_4086383
_publ_section_title
;
 Steric and Electronic Influences of Internal Alkynes on the Formation of
 Thorium Metallacycles: A Combined Experimental and Computational Study
;
_journal_name_full               Organometallics
_journal_paper_doi               10.1021/acs.organomet.5b00945
_journal_year                    2016
_chemical_formula_moiety         'C40 H54 Si2 Th'
_chemical_formula_sum            'C40 H54 Si2 Th'
_chemical_formula_weight         823.05
_chemical_name_systematic
; 
 ? 
;
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-97
_cell_angle_alpha                83.509(11)
_cell_angle_beta                 76.778(11)
_cell_angle_gamma                65.237(11)
_cell_formula_units_Z            2
_cell_length_a                   9.986(6)
_cell_length_b                   11.666(7)
_cell_length_c                   17.774(10)
_cell_measurement_reflns_used    2196
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      21.80
_cell_measurement_theta_min      2.35
_cell_volume                     1830.0(19)
_computing_cell_refinement       'Bruker SAINT'
_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, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.983
_diffrn_measured_fraction_theta_max 0.963
_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  0.0530
_diffrn_reflns_av_unetI/netI     0.1110
_diffrn_reflns_laue_measured_fraction_full 0.983
_diffrn_reflns_laue_measured_fraction_max 0.963
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            12431
_diffrn_reflns_point_group_measured_fraction_full 0.983
_diffrn_reflns_point_group_measured_fraction_max 0.963
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.660
_diffrn_reflns_theta_min         1.923
_exptl_absorpt_coefficient_mu    4.165
_exptl_absorpt_correction_T_max  0.75
_exptl_absorpt_correction_T_min  0.60
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.494
_exptl_crystal_description       block
_exptl_crystal_F_000             824
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.100
_refine_diff_density_max         2.202
_refine_diff_density_min         -1.990
_refine_diff_density_rms         0.228
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.007
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     408
_refine_ls_number_reflns         8219
_refine_ls_number_restraints     240
_refine_ls_restrained_S_all      0.994
_refine_ls_R_factor_all          0.0682
_refine_ls_R_factor_gt           0.0511
_refine_ls_shift/su_max          0.000
_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^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0992
_refine_ls_wR_factor_ref         0.1100
_reflns_Friedel_coverage         0.000
_reflns_number_gt                6624
_reflns_number_total             8219
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            om5b00945_si_003.cif
_cod_data_source_block           compound7
_cod_database_code               4086383
_shelx_estimated_absorpt_t_min   0.490
_shelx_estimated_absorpt_t_max   0.681