Synthesis, Characterization, and Catalytic Activity of Rare Earth Metal Amides Supported by a Diamido Ligand with a CH2SiMe2 Link
Yunjun Wu; Shaowu Wang; Xiancui Zhu; Gaosheng Yang; Yun Wei; Lijun Zhang; Hai-bin Song; Inorganic Chemistry 47 (2008) 5503–5511; doi:10.1021/ic800496d

data_4305138
_publ_section_title
;
Synthesis, Characterization, and Catalytic Activity of Rare Earth Metal
Amides Supported by a Diamido Ligand with a CH2SiMe2 Link
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              5503
_journal_page_last               5511
_journal_paper_doi               10.1021/ic800496d
_journal_volume                  47
_journal_year                    2008
_chemical_formula_sum            'C24 H21 N3 O3'
_chemical_formula_weight         399.44
_space_group_IT_number           7
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P -2yac'
_symmetry_space_group_name_H-M   'P 1 n 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                 90.0100(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   11.4057(9)
_cell_length_b                   4.5668(4)
_cell_length_c                   18.9688(14)
_cell_measurement_temperature    293(2)
_cell_volume                     988.04(14)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_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  0.0199
_diffrn_reflns_av_sigmaI/netI    0.0229
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            8049
_diffrn_reflns_theta_full        27.55
_diffrn_reflns_theta_max         27.55
_diffrn_reflns_theta_min         2.08
_exptl_absorpt_coefficient_mu    0.090
_exptl_crystal_density_diffrn    1.343
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             420
_refine_diff_density_max         0.121
_refine_diff_density_min         -0.101
_refine_diff_density_rms         0.023
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   1.2(8)
_refine_ls_extinction_coef       0.032(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     272
_refine_ls_number_reflns         4114
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0310
_refine_ls_R_factor_gt           0.0287
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0425P)^2^+0.0688P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0778
_refine_ls_wR_factor_ref         0.0797
_reflns_number_gt                3861
_reflns_number_total             4114
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic800496d-file002_7.cif
_cod_data_source_block           070830a_0m
_cod_database_code               4305138