Multiple N−H Bond Activation: Synthesis and Reactivity of Functionalized Primary Amido Ytterbium Complexes
Pi, Chengfu; Zhang, Zhengxing; Pang, Zhen; Zhang, Jie; Luo, Jun; Chen, Zhenxia; Weng, Linhong; Zhou, Xigeng; Organometallics 26 (2007) 1934–; doi:10.1021/om061094+

data_4083684
_publ_section_title
;
 Multiple N&#x2212;H Bond Activation:&#x00A0; Synthesis and Reactivity of
 Functionalized Primary Amido Ytterbium Complexes
;
_journal_issue                   8
_journal_name_full               Organometallics
_journal_page_first              1934
_journal_paper_doi               10.1021/om061094+
_journal_volume                  26
_journal_year                    2007
_chemical_formula_sum            'C24 H32 N4 Yb'
_chemical_formula_weight         549.98
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.357(2)
_cell_length_b                   9.922(3)
_cell_length_c                   28.681(8)
_cell_measurement_reflns_used    945
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.267
_cell_measurement_theta_min      2.821
_cell_volume                     2378.2(11)
_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, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_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  0.0272
_diffrn_reflns_av_sigmaI/netI    0.0426
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            10921
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         1.42
_diffrn_standards_decay_%        6.26
_exptl_absorpt_coefficient_mu    3.948
_exptl_absorpt_correction_T_max  0.6936
_exptl_absorpt_correction_T_min  0.5889
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_density_diffrn    1.535
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1096
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.637
_refine_diff_density_min         -0.671
_refine_diff_density_rms         0.074
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.010(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.960
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     262
_refine_ls_number_reflns         4652
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.960
_refine_ls_R_factor_all          0.0289
_refine_ls_R_factor_gt           0.0252
_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^)+(0.0133P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0424
_refine_ls_wR_factor_ref         0.0431
_reflns_number_gt                4332
_reflns_number_total             4652
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om061094%2Bsi20061201_101244.cif
_cod_data_source_block           f60429c
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/usr/data/users/saulius/automatic-downloads/retrospective/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_cell_volume        2378.4(12)
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_original_formula_sum        'C12 H16 N2 Yb0.50'
_cod_database_code               4083684