Rare-earth dichloro and bis(alkyl) complexes supported by bulky amido-imino ligand. Synthesis, structure, reactivity and catalytic activity in isoprene polymerization.
Kissel, Alexander A.; Lyubov, Dmitry M.; Mahrova, Tatyana V.; Fukin, Georgy K.; Cherkasov, Anton V.; Glukhova, Tatyana A.; Cui, Dongmei; Trifonov, Alexander A.; Dalton transactions (Cambridge, England : 2003) 42 (2013) 9211–9225; doi:10.1039/c3dt33108c

data_7022838
_publ_section_title
;
 Rare-earth dichloro and bis(alkyl) complexes supported by bulky
 amido-imino ligand. Synthesis, structure, reactivity and catalytic
 activity in isoprene polymerization.
;
_journal_issue                   25
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              9211
_journal_page_last               9225
_journal_paper_doi               10.1039/c3dt33108c
_journal_volume                  42
_journal_year                    2013
_chemical_formula_sum            'C32 H52 Li N4'
_chemical_formula_weight         499.72
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_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                 100.295(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.6221(13)
_cell_length_b                   12.2902(12)
_cell_length_c                   19.4681(19)
_cell_measurement_reflns_used    4652
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.34
_cell_measurement_theta_min      2.37
_cell_volume                     3206.8(5)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0453
_diffrn_reflns_av_sigmaI/netI    0.0391
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            26863
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         1.97
_exptl_absorpt_coefficient_mu    0.060
_exptl_absorpt_correction_T_max  0.9881
_exptl_absorpt_correction_T_min  0.9822
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2008)'
_exptl_crystal_colour            dark_red
_exptl_crystal_density_diffrn    1.035
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1100
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.285
_refine_diff_density_min         -0.185
_refine_diff_density_rms         0.037
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.033
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     354
_refine_ls_number_reflns         6300
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.033
_refine_ls_R_factor_all          0.0764
_refine_ls_R_factor_gt           0.0492
_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^)+(0.0543P)^2^+0.4987P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1095
_refine_ls_wR_factor_ref         0.1187
_reflns_number_gt                4571
_reflns_number_total             6300
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3dt33108c.txt
_cod_data_source_block           lidad1m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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)/c
_cod_database_code               7022838