Aluminate Samarium(II) and Samarium(III) Aryloxides. Isolation of a Single-Component Ethylene Polymerization Catalyst
Korobkov, Ilia; Gambarotta, Sandro; Organometallics 28 (2009) 4009–; doi:10.1021/om900172n

data_4069393
_publ_section_title
;
 Aluminate Samarium(II) and Samarium(III) Aryloxides. Isolation of a
 Single-Component Ethylene Polymerization Catalyst
;
_journal_issue                   14
_journal_name_full               Organometallics
_journal_page_first              4009
_journal_paper_doi               10.1021/om900172n
_journal_volume                  28
_journal_year                    2009
_chemical_formula_sum            'C54 H84 Al2 O4 Sm2'
_chemical_formula_weight         1151.87
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_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                83.106(3)
_cell_angle_beta                 74.914(3)
_cell_angle_gamma                66.868(3)
_cell_formula_units_Z            1
_cell_length_a                   10.716(3)
_cell_length_b                   10.928(3)
_cell_length_c                   13.541(3)
_cell_measurement_reflns_used    993
_cell_measurement_temperature    203(2)
_cell_measurement_theta_max      24.74
_cell_measurement_theta_min      2.32
_cell_volume                     1407.7(6)
_computing_cell_refinement       'SMART, Bruker (2000)'
_computing_data_collection       'SMART, Bruker (2000)'
_computing_data_reduction        'XPREP, Bruker (2000)'
_computing_molecular_graphics    'SHELXTL, Bruker (2000)'
_computing_publication_material  'SHELXTL, Bruker (2000)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      203(2)
_diffrn_measured_fraction_theta_full 0.982
_diffrn_measured_fraction_theta_max 0.982
_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  0.0204
_diffrn_reflns_av_sigmaI/netI    0.0218
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            14107
_diffrn_reflns_theta_full        24.77
_diffrn_reflns_theta_max         24.77
_diffrn_reflns_theta_min         2.03
_diffrn_standards_decay_%        <1
_exptl_absorpt_coefficient_mu    2.135
_exptl_absorpt_correction_T_max  0.6747
_exptl_absorpt_correction_T_min  0.6173
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Bruker (2000)'
_exptl_crystal_colour            pl_yellow
_exptl_crystal_density_diffrn    1.359
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             590
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.633
_refine_diff_density_min         -0.353
_refine_diff_density_rms         0.080
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.031
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     280
_refine_ls_number_reflns         4744
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.031
_refine_ls_R_factor_all          0.0278
_refine_ls_R_factor_gt           0.0248
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0437P)^2^+1.2080P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0671
_refine_ls_wR_factor_ref         0.0692
_reflns_number_gt                4422
_reflns_number_total             4744
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om900172n_si_001.cif
_cod_data_source_block           complex6
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'n/a' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_cell_volume        1407.8(6)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4069393