Substitution Effects in Highly Syndioselective Styrene Polymerization Catalysts Based on Single-Component Allyl ansa-Lanthanidocenes: An Experimental and Theoretical Study
Laur, Eva; Louyriac, Elisa; Dorcet, Vincent; Welle, Alexandre; Vantomme, Aurélien; Miserque, Olivier; Brusson, Jean-Michel; Maron, Laurent; Carpentier, Jean-François; Kirillov, Evgueni; Macromolecules 50 (2017) 6539–; doi:10.1021/acs.macromol.7b00853

data_1547549
_publ_section_title
;
 Substitution Effects in Highly Syndioselective Styrene Polymerization
 Catalysts Based on Single-Component Allyl ansa-Lanthanidocenes: An
 Experimental and Theoretical Study
;
_journal_issue                   17
_journal_name_full               Macromolecules
_journal_page_first              6539
_journal_paper_doi               10.1021/acs.macromol.7b00853
_journal_volume                  50
_journal_year                    2017
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C38 H55 Si2 Y'
_chemical_formula_sum            'C38 H55 Si2 Y'
_chemical_formula_weight         656.91
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           57
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      57
_symmetry_space_group_name_Hall  '-P 2c 2b'
_symmetry_space_group_name_H-M   'P b c m'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.3
_audit_creation_date             2015-06-23T12:20:55-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.5747(3)
_cell_length_b                   17.4837(5)
_cell_length_c                   21.9170(8)
_cell_measurement_reflns_used    7658
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      26.87
_cell_measurement_theta_min      2.43
_cell_measurement_wavelength     0.71073
_cell_volume                     3668.9(2)
_computing_cell_refinement       'Bruker APEX2 (Bruker, 2006)'
_computing_data_collection       'Bruker APEX2 (Bruker, 2006)'
_computing_data_reduction        'Bruker APEX2 (Bruker, 2006)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material
;
          WinGX publication routines (Farrugia, 2012),
          CRYSCALc (T. Roisnel, local program, 2014)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Altomare et al., 1999)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector                 'CCD plate'
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'APEXII, Bruker-AXS'
_diffrn_measurement_method       'CCD rotation images, thin slices'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0386
_diffrn_reflns_av_unetI/netI     0.05
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            16688
_diffrn_reflns_theta_full        27.55
_diffrn_reflns_theta_max         27.55
_diffrn_reflns_theta_min         3.06
_exptl_absorpt_coefficient_mu    1.678
_exptl_absorpt_correction_T_max  0.585
_exptl_absorpt_correction_T_min  0.449
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
  [Sheldrick, G.M. (2002). SADABS Bruker AXS Inc., Madison, Wisconsin, USA]
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.189
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1400
_exptl_crystal_size_max          0.58
_exptl_crystal_size_mid          0.43
_exptl_crystal_size_min          0.32
_refine_diff_density_max         0.684
_refine_diff_density_min         -0.42
_refine_diff_density_rms         0.068
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.02
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     200
_refine_ls_number_reflns         4318
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.02
_refine_ls_R_factor_all          0.0617
_refine_ls_R_factor_gt           0.0401
_refine_ls_shift/su_max          0.016
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0485P)^2^+2.3526P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0933
_refine_ls_wR_factor_ref         0.102
_reflns_number_gt                3354
_reflns_number_total             4318
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ma7b00853_si_002.cif
_cod_data_source_block           5-Y
_cod_database_code               1547549