Aluminum Effects in the Syndiospecific Copolymerization of Styrene with Ethylene by Cationic Fluorenyl Scandium Alkyl Catalysts
Li, Xiaofang; Wang, Xiaoying; Tong, Xin; Zhang, Hongxia; Chen, Yuanyuan; Liu, Ying; Liu, Hui; Wang, Xiaojie; Nishiura, Masayoshi; He, Huan; Lin, Zhenguo; Zhang, Shaowen; Hou, Zhaomin; Organometallics 32 (2013) 1445–; doi:10.1021/om3011036

data_4080357
_publ_section_title
;
 Aluminum Effects in the Syndiospecific Copolymerization of Styrene with
 Ethylene by Cationic Fluorenyl Scandium Alkyl Catalysts
;
_journal_issue                   5
_journal_name_full               Organometallics
_journal_page_first              1445
_journal_paper_doi               10.1021/om3011036
_journal_volume                  32
_journal_year                    2013
_chemical_formula_sum            'C25 H40 N Sc Si2'
_chemical_formula_weight         455.72
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.9554(5)
_cell_length_b                   14.8253(7)
_cell_length_c                   17.8490(8)
_cell_measurement_reflns_used    6922
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      28.25
_cell_measurement_theta_min      2.34
_cell_volume                     2634.4(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0255
_diffrn_reflns_av_sigmaI/netI    0.0322
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -3
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            11843
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         2.28
_exptl_absorpt_coefficient_mu    0.381
_exptl_absorpt_correction_T_max  0.8593
_exptl_absorpt_correction_T_min  0.8471
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_density_diffrn    1.149
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             984
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.43
_exptl_crystal_size_min          0.41
_refine_diff_density_max         0.249
_refine_diff_density_min         -0.186
_refine_diff_density_rms         0.038
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.10(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.013
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     270
_refine_ls_number_reflns         4600
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.013
_refine_ls_R_factor_all          0.0278
_refine_ls_R_factor_gt           0.0256
_refine_ls_shift/su_max          0.025
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0354P)^2^+0.5265P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0631
_refine_ls_wR_factor_ref         0.0643
_reflns_number_gt                4385
_reflns_number_total             4600
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om3011036_si_009.cif
_cod_data_source_block           b
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from
2011-04-26.

'_refine_ls_hydrogen_treatment' value 'Constr' changed
to 'constr' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               4080357