Reactivity of (C5Me5)3LaLx Complexes: Synthesis of a Tris(pentamethylcyclopentadienyl) Complex with Two Additional Ligands, (C5Me5)3La(NCCMe3)2
William J. Evans; Thomas J. Mueller; Joseph W. Ziller; Journal of the American Chemical Society 131 (2009) 2678–2686; doi:10.1021/ja808763y

data_4103947
_publ_section_title
;
 Reactivity of (C5Me5)3LaLx Complexes: Synthesis of a
 Tris(pentamethylcyclopentadienyl) Complex with Two Additional Ligands,
 (C5Me5)3La(NCCMe3)2
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              2678
_journal_page_last               2686
_journal_paper_doi               10.1021/ja808763y
_journal_volume                  131
_journal_year                    2009
_chemical_formula_sum            'C46 H69 La N2'
_chemical_formula_weight         788.94
_chemical_name_systematic
; 
 ? 
;
_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           SHELXTL
_cell_angle_alpha                90.00
_cell_angle_beta                 101.8600(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   19.1633(6)
_cell_length_b                   17.5365(5)
_cell_length_c                   12.9886(4)
_cell_measurement_reflns_used    9924
_cell_measurement_temperature    103(2)
_cell_measurement_theta_max      33.54
_cell_measurement_theta_min      2.41
_cell_volume                     4271.7(2)
_computing_cell_refinement       'Bruker SMART APEX2/SAINT'
_computing_data_collection       'Bruker SMART 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      103(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker SMART APEX II CCD'
_diffrn_measurement_method       'phi and omega'
_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  0.0227
_diffrn_reflns_av_sigmaI/netI    0.0160
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            67787
_diffrn_reflns_theta_full        30.51
_diffrn_reflns_theta_max         30.51
_diffrn_reflns_theta_min         1.98
_diffrn_standards_decay_%        '< 1.0'
_exptl_absorpt_coefficient_mu    1.031
_exptl_absorpt_correction_T_max  0.8049
_exptl_absorpt_correction_T_min  0.7207
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SADABS'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.227
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       cube
_exptl_crystal_F_000             1664
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.757
_refine_diff_density_min         -0.354
_refine_diff_density_rms         0.061
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.072
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     463
_refine_ls_number_reflns         13025
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.072
_refine_ls_R_factor_all          0.0257
_refine_ls_R_factor_gt           0.0200
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0209P)^2^+2.7279P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0484
_refine_ls_wR_factor_ref         0.0527
_reflns_number_gt                11592
_reflns_number_total             13025
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja808763y_si_001_3.cif
_cod_data_source_block           tjm8
_cod_database_code               4103947