Yttrium complexes incorporating the chelating diamides [ArN(CH2)xNAr]2- (Ar = C6H3-2,6-iPr2, x= 2, 3) and their unusual reaction with phenylsilane.
Avent, Anthony G.; Cloke, F Geoffrey N; Elvidge, Benjamin R.; Hitchcock, Peter B.; Dalton transactions (Cambridge, England : 2003)  (2004) 1083–1096; doi:10.1039/b400149d

data_7014013
_publ_section_title
;
 Yttrium complexes incorporating the chelating diamides
 [ArN(CH2)xNAr]2- (Ar = C6H3-2,6-iPr2, x= 2, 3) and their unusual
 reaction with phenylsilane.
;
_journal_issue                   7
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1083
_journal_page_last               1096
_journal_paper_doi               10.1039/b400149d
_journal_year                    2004
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C61 H88 K N4 Y'
_chemical_formula_sum            'C61 H88 K N4 Y'
_chemical_formula_weight         1005.36
_chemical_name_common            (Y(C6H3iPr2N(CH2)3NC6H3iPr2)2K(C7H8))
_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             2002-11-12T14:39:33-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 98.851(1)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.2379(2)
_cell_length_b                   13.0294(2)
_cell_length_c                   36.6872(6)
_cell_measurement_reflns_used    72736
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      22.465
_cell_measurement_theta_min      3.705
_cell_measurement_wavelength     0.71073
_cell_volume                     5780.20(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      223(2)
_diffrn_measured_fraction_theta_full 0.976
_diffrn_measured_fraction_theta_max 0.976
_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  0.0746
_diffrn_reflns_av_unetI/netI     0.0813
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       38
_diffrn_reflns_limit_l_min       -39
_diffrn_reflns_number            24408
_diffrn_reflns_theta_full        22.61
_diffrn_reflns_theta_max         22.61
_diffrn_reflns_theta_min         3.72
_exptl_absorpt_coefficient_mu    1.12
_exptl_absorpt_correction_T_max  0.9065
_exptl_absorpt_correction_T_min  0.8328
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
[c.f. r.h. blessing, acta cryst. (1995), a51, 33-38]
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.155
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             2160
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.579
_refine_diff_density_min         -0.435
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.062
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     592
_refine_ls_number_reflns         7471
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          0.1098
_refine_ls_R_factor_gt           0.0677
_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^)+(0.0446P)^2^+11.2075P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1314
_refine_ls_wR_factor_ref         0.1477
_reflns_number_gt                5283
_reflns_number_total             7471
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b400149d.txt
_cod_data_source_block           nov1502
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7014013