Polymerization of α-olefins and their copolymerization with ethylene by half-sandwich scandium catalysts with an N-heterocyclic carbene ligand
Wang, Yinran; Huang, Lin; Hou, Zhaomin; Guo, Fang; Polymer Chemistry 14 (2023) 828–838; doi:10.1039/D2PY01526A

data_1568290
_publ_section_title
;
 Polymerization of \a-olefins and their copolymerization with ethylene by
 half-sandwich scandium catalysts with an N-heterocyclic carbene ligand
;
_journal_issue                   7
_journal_name_full               'Polymer Chemistry'
_journal_page_first              828
_journal_page_last               838
_journal_paper_doi               10.1039/D2PY01526A
_journal_volume                  14
_journal_year                    2023
_chemical_formula_moiety         'C33 H55 N2 Sc Si3'
_chemical_formula_sum            'C33 H55 N2 Sc Si3'
_chemical_formula_weight         609.02
_chemical_properties_physical    Air-sensitive,Moisture-sensitive,Heat-sensitive
_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   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2022-01-26
_audit_creation_method
;
Olex2 1.5
(compiled 2021.12.09 svn.r5202d8cf for OlexSys, GUI svn.r6439)
;
_audit_update_record
;
2022-05-17 deposited with the CCDC.	2023-01-16 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 93.598(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.6387(8)
_cell_length_b                   17.0971(12)
_cell_length_c                   19.0816(12)
_cell_measurement_reflns_used    9804
_cell_measurement_temperature    173.00
_cell_measurement_theta_max      27.68
_cell_measurement_theta_min      2.45
_cell_volume                     3789.5(4)
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      173.00
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.979
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1034
_diffrn_reflns_av_unetI/netI     0.0715
_diffrn_reflns_Laue_measured_fraction_full 0.993
_diffrn_reflns_Laue_measured_fraction_max 0.979
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            55814
_diffrn_reflns_point_group_measured_fraction_full 0.993
_diffrn_reflns_point_group_measured_fraction_max 0.979
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.701
_diffrn_reflns_theta_min         2.120
_diffrn_source_current           40.0
_diffrn_source_power             2.0
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.311
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.5426
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            'clear yellowish yellow'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   yellowish
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.067
_exptl_crystal_description       cube
_exptl_crystal_F_000             1320
_exptl_crystal_size_max          0.1
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.588
_refine_diff_density_min         -0.605
_refine_diff_density_rms         0.071
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.187
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     365
_refine_ls_number_reflns         8698
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.187
_refine_ls_R_factor_all          0.1212
_refine_ls_R_factor_gt           0.0858
_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^)+7.8818P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1375
_refine_ls_wR_factor_ref         0.1517
_reflns_Friedel_coverage         0.000
_reflns_number_gt                6450
_reflns_number_total             8698
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2py01526a2.cif
_cod_data_source_block           9fn
_cod_depositor_comments
'Adding full bibliography for 1568288--1568290.cif.'
_cod_database_code               1568290
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.970
_shelx_estimated_absorpt_t_min   0.970
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C20(H20), C23(H23)
2.b Secondary CH2 refined with riding coordinates:
 C26(H26A,H26B), C30(H30A,H30B)
2.c Aromatic/amide H refined with riding coordinates:
 C3(H3), C4(H4), C5(H5), C6(H6), C9(H9), C10(H10), C11(H11), C12(H12),
 C18(H18), C19(H19)
2.d Idealised Me refined as rotating group:
 C14(H14A,H14B,H14C), C15(H15A,H15B,H15C), C16(H16A,H16B,H16C), C21(H21A,H21B,
 H21C), C22(H22A,H22B,H22C), C24(H24A,H24B,H24C), C25(H25A,H25B,H25C), C27(H27A,
 H27B,H27C), C28(H28A,H28B,H28C), C29(H29A,H29B,H29C), C31(H31A,H31B,H31C),
 C32(H32A,H32B,H32C), C33(H33A,H33B,H33C)
;
_olex2_submission_special_instructions 'No special instructions were received'