Living 3,4-Polymerization of Isoprene by Cationic Rare Earth Metal Alkyl Complexes Bearing Iminoamido Ligands
Du, Gaixia; Wei, Yanling; Ai, Lin; Chen, Yuanyuan; Xu, Qi; Liu, Xiao; Zhang, Shaowen; Hou, Zhaomin; Li, Xiaofang; Organometallics 30 (2011) 160–; doi:10.1021/om100971d

data_4063831
_publ_section_title
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 Living 3,4-Polymerization of Isoprene by Cationic Rare Earth Metal Alkyl
 Complexes Bearing Iminoamido Ligands
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_journal_issue                   1
_journal_name_full               Organometallics
_journal_page_first              160
_journal_paper_doi               10.1021/om100971d
_journal_volume                  30
_journal_year                    2011
_chemical_formula_sum            'C42 H76 N2 O Si3 Y'
_chemical_formula_weight         798.23
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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            8
_cell_length_a                   18.837(3)
_cell_length_b                   12.872(2)
_cell_length_c                   38.991(6)
_cell_measurement_reflns_used    9918
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      28.09
_cell_measurement_theta_min      2.40
_cell_volume                     9454(3)
_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, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w 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  0.0567
_diffrn_reflns_av_sigmaI/netI    0.0515
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       46
_diffrn_reflns_limit_l_min       -46
_diffrn_reflns_number            39606
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         2.09
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.340
_exptl_absorpt_correction_T_max  0.6300
_exptl_absorpt_correction_T_min  0.5777
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.122
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             3448
_exptl_crystal_size_max          0.46
_exptl_crystal_size_mid          0.42
_exptl_crystal_size_min          0.38
_refine_diff_density_max         2.345
_refine_diff_density_min         -1.503
_refine_diff_density_rms         0.104
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.164
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     442
_refine_ls_number_reflns         8336
_refine_ls_number_restraints     1134
_refine_ls_restrained_S_all      1.099
_refine_ls_R_factor_all          0.0870
_refine_ls_R_factor_gt           0.0693
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0250P)^2^+78.8764P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1743
_refine_ls_wR_factor_ref         0.1816
_reflns_number_gt                6660
_reflns_number_total             8336
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om100971d_si_003.cif
_cod_data_source_block           complex_3
_cod_depositor_comments
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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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
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_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               4063831