Heteroleptic ytterbium(ii) complexes supported by a bulky β-diketiminato ligand
Hitchcock, Peter B.; Khvostov, Alexei V.; Lappert, Michael F.; Protchenko, Andrey V.; Dalton Transactions  (2009) 2383–2391; doi:10.1039/b818969b

data_7000840
_publ_section_title
;
 Heteroleptic ytterbium(ii) complexes supported by a bulky
 \b-diketiminato ligand
;
_journal_issue                   13
_journal_name_full               'Dalton Transactions'
_journal_page_first              2383
_journal_page_last               2391
_journal_paper_doi               10.1039/b818969b
_journal_year                    2009
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C52 H64 N2 O1 Yb1'
_chemical_formula_sum            'C52 H64 N2 O Yb'
_chemical_formula_weight         906.09
_chemical_name_common
;
[Yb(thf)(Ph3C)(C6H3iPr2NCMeCHCMeNC6H3iPr2)]
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_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_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.2
_audit_creation_date             2003-02-12T14:54:47-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 100.391(1)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   23.6608(5)
_cell_length_b                   9.0274(2)
_cell_length_c                   21.7827(4)
_cell_measurement_reflns_used    99348
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      22.986
_cell_measurement_theta_min      3.705
_cell_measurement_wavelength     0.71073
_cell_volume                     4576.38(16)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Nonius BV, 1997-2000)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       CCD
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0891
_diffrn_reflns_av_unetI/netI     0.051
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -25
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            32206
_diffrn_reflns_theta_full        22.97
_diffrn_reflns_theta_max         22.97
_diffrn_reflns_theta_min         3.71
_exptl_absorpt_coefficient_mu    2.081
_exptl_absorpt_correction_T_max  0.9822
_exptl_absorpt_correction_T_min  0.5934
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
[c.f. r.h. blessing, acta cryst. (1995), a51, 33-38]
;
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.315
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1872
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.02
_refine_diff_density_max         1.06
_refine_diff_density_min         -1.439
_refine_diff_density_rms         0.097
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.231
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     505
_refine_ls_number_reflns         6287
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.231
_refine_ls_R_factor_all          0.1021
_refine_ls_R_factor_gt           0.0748
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0000P)^2^+41.2413P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1342
_refine_ls_wR_factor_ref         0.1458
_reflns_number_gt                4811
_reflns_number_total             6287
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b818969b.txt
_cod_data_source_block           (8)-feb1403
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_original_formula_sum        'C52 H64 N2 O1 Yb1'
_cod_database_code               7000840