Novel Lanthanide Amides Incorporating Neutral Pyrrole Ligand in a Constrained Geometry Architecture: Synthesis, Characterization, Reaction, and Catalytic Activity
Wang, Fenhua; Wang, Shaowu; Zhu, Xiancui; Zhou, Shuangliu; Miao, Hui; Gu, Xiaoxia; Wei, Yun; Yuan, Qingbing; Organometallics 32 (2013) 3920–; doi:10.1021/om400409x

data_4081069
_publ_section_title
;
 Novel Lanthanide Amides Incorporating Neutral Pyrrole Ligand in a
 Constrained Geometry Architecture: Synthesis, Characterization, Reaction,
 and Catalytic Activity
;
_journal_issue                   14
_journal_name_full               Organometallics
_journal_page_first              3920
_journal_paper_doi               10.1021/om400409x
_journal_volume                  32
_journal_year                    2013
_chemical_formula_sum            'C26 H53 La N4 Si4'
_chemical_formula_weight         672.99
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 92.9010(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   20.6220(12)
_cell_length_b                   15.6675(9)
_cell_length_c                   21.8991(13)
_cell_measurement_reflns_used    9916
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.58
_cell_measurement_theta_min      2.44
_cell_volume                     7066.4(7)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0315
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            8163
_diffrn_reflns_theta_full        27.58
_diffrn_reflns_theta_max         27.58
_diffrn_reflns_theta_min         1.63
_exptl_absorpt_coefficient_mu    1.364
_exptl_absorpt_correction_T_max  0.8012
_exptl_absorpt_correction_T_min  0.7720
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.265
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2800
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.487
_refine_diff_density_min         -0.389
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.030
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     330
_refine_ls_number_reflns         8163
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.030
_refine_ls_R_factor_all          0.0408
_refine_ls_R_factor_gt           0.0263
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0200P)^2^+4.0503P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0546
_refine_ls_wR_factor_ref         0.0576
_reflns_number_gt                6420
_reflns_number_total             8163
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om400409x_si_002.cif
_cod_data_source_block           2
_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      C2/c
_cod_database_code               4081069