C‒H Bond Activation and Isoprene Polymerization by Rare-Earth-Metal Tetramethylaluminate Complexes Bearing Formamidinato N-Ancillary Ligands
Hamidi, Shima; Jende, Lars N.; Martin Dietrich, H.; Maichle-Mössmer, Cäcilia; Törnroos, Karl W.; Deacon, Glen B.; Junk, Peter C.; Anwander, Reiner; Organometallics 32 (2013) 1209–; doi:10.1021/om301010m

data_4080137
_publ_section_title
;
 C--H Bond Activation and Isoprene Polymerization by Rare-Earth-Metal
 Tetramethylaluminate Complexes Bearing Formamidinato N-Ancillary Ligands
;
_journal_issue                   5
_journal_name_full               Organometallics
_journal_page_first              1209
_journal_paper_doi               10.1021/om301010m
_journal_volume                  32
_journal_year                    2013
_chemical_formula_sum            'C29 H51 Al2 La N2'
_chemical_formula_weight         620.59
_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                109.91(3)
_cell_angle_beta                 94.15(3)
_cell_angle_gamma                105.93(3)
_cell_formula_units_Z            2
_cell_length_a                   9.2922(19)
_cell_length_b                   12.290(3)
_cell_length_c                   16.392(3)
_cell_measurement_temperature    173(2)
_cell_volume                     1663.8(8)
_computing_cell_refinement       X-AREA
_computing_data_collection       X-AREA
_computing_data_reduction        X-AREA
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'STOE IPDS II'
_diffrn_measurement_method       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  0.0490
_diffrn_reflns_av_sigmaI/netI    0.0467
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            23132
_diffrn_reflns_theta_full        29.18
_diffrn_reflns_theta_max         29.18
_diffrn_reflns_theta_min         4.92
_exptl_absorpt_coefficient_mu    1.354
_exptl_absorpt_correction_T_max  0.7283
_exptl_absorpt_correction_T_min  0.6487
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   mulabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.239
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             644
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.920
_refine_diff_density_min         -0.774
_refine_diff_density_rms         0.081
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.040
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     321
_refine_ls_number_reflns         8876
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.0463
_refine_ls_R_factor_gt           0.0350
_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^)+(0.0379P)^2^+0.2633P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0723
_refine_ls_wR_factor_ref         0.0754
_reflns_number_gt                7632
_reflns_number_total             8876
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om301010m_si_001.cif
_cod_data_source_block           5b
_cod_original_cell_volume        1663.7(6)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4080137