Yttrium Complexes Supported by Linked Bis(amide) Ligand: Synthesis, Structure, and Catalytic Activity in the Ring-Opening Polymerization of Cyclic Esters
Tatyana V. Mahrova; Georgy K. Fukin; Anton V. Cherkasov; Alexander A. Trifonov; Noureddine Ajellal; Jean-François Carpentier; Inorganic Chemistry 48 (2009) 4258–4266; doi:10.1021/ic802427f

data_4302091
_publ_contact_author             G.K.Fukin
_publ_contact_author_email       gera@iomc.ras.ru
_publ_section_title
;
Yttrium Complexes Supported by Linked Bis(amide) Ligand: Synthesis,
Structure, and Catalytic Activity in the Ring-Opening Polymerization of
Cyclic Esters
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              4258
_journal_page_last               4266
_journal_paper_doi               10.1021/ic802427f
_journal_volume                  48
_journal_year                    2009
_chemical_formula_sum            'C40 H78 B2 Li N2 O6 Y'
_chemical_formula_weight         800.51
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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            8
_cell_length_a                   16.0810(4)
_cell_length_b                   16.8673(4)
_cell_length_c                   35.3301(8)
_cell_measurement_reflns_used    900
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30
_cell_measurement_theta_min      2
_cell_volume                     9583.0(4)
_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      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0980
_diffrn_reflns_av_sigmaI/netI    0.0557
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       45
_diffrn_reflns_limit_l_min       -45
_diffrn_reflns_number            89381
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.71
_exptl_absorpt_coefficient_mu    1.257
_exptl_absorpt_correction_T_max  0.8437
_exptl_absorpt_correction_T_min  0.5837
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1998a)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.110
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             3456
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.549
_refine_diff_density_min         -0.488
_refine_diff_density_rms         0.075
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.013
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     501
_refine_ls_number_reflns         10988
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.013
_refine_ls_R_factor_all          0.0909
_refine_ls_R_factor_gt           0.0474
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0663P)^2^+0.6228P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1099
_refine_ls_wR_factor_ref         0.1219
_reflns_number_gt                7247
_reflns_number_total             10988
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic802427f_si_002_3.cif
_cod_data_source_block           ynbm
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               4302091