Half-Sandwich Scandium Bis(amide) Complexes as Efficient Catalyst Precursors for Syndiospecific Polymerization of Styrene
Luo, Yunjie; Feng, Xiaoying; Wang, Yibin; Fan, Shimin; Chen, Jue; Lei, Yinlin; Liang, Hongze; Organometallics 30 (2011) 3270–3274; doi:10.1021/om101047h

data_4063937
_publ_section_title
;
 Half-Sandwich Scandium Bis(amide) Complexes as Efficient Catalyst
 Precursors for Syndiospecific Polymerization of Styrene
;
_journal_issue                   12
_journal_name_full               Organometallics
_journal_page_first              3270
_journal_page_last               3274
_journal_paper_doi               10.1021/om101047h
_journal_volume                  30
_journal_year                    2011
_chemical_formula_moiety         'C18 H41 Al N Sc Si2'
_chemical_formula_sum            'C18 H41 Al N Sc Si2'
_chemical_formula_weight         399.64
_chemical_name_systematic        ?
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                85.161(19)
_cell_angle_beta                 78.719(17)
_cell_angle_gamma                65.440(13)
_cell_formula_units_Z            2
_cell_length_a                   9.7864(11)
_cell_length_b                   10.5601(14)
_cell_length_c                   13.801(3)
_cell_measurement_reflns_used    4561
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.3
_cell_measurement_theta_min      3.0
_cell_volume                     1272.2(4)
_computing_cell_refinement       CrystalClear
_computing_data_collection       CrystalClear
_computing_data_reduction        CrystalStructure
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 7.31
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Rigaku Mercury'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.0335
_diffrn_reflns_av_sigmaI/netI    0.0444
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            12336
_diffrn_reflns_theta_full        25.35
_diffrn_reflns_theta_max         25.35
_diffrn_reflns_theta_min         3.01
_exptl_absorpt_coefficient_mu    0.418
_exptl_absorpt_correction_T_max  0.887
_exptl_absorpt_correction_T_min  0.656
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Jacobson, R. (1998) Private communication'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.043
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             436
_exptl_crystal_size_max          0.80
_exptl_crystal_size_mid          0.70
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.349
_refine_diff_density_min         -0.324
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.176
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     244
_refine_ls_number_reflns         4636
_refine_ls_number_restraints     9
_refine_ls_restrained_S_all      1.176
_refine_ls_R_factor_all          0.1067
_refine_ls_R_factor_gt           0.0825
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0667P)^2^+0.7962P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1761
_refine_ls_wR_factor_ref         0.1889
_reflns_number_gt                3628
_reflns_number_total             4636
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om101047h_si_003.cif
_cod_data_source_block           shelxl
_cod_original_cell_volume        1272.2(3)
_cod_database_code               4063937