Synthesis and characterization of rare-earth metal complexes supported by a new pentadentate Schiff base and their application in heteroselective polymerization of rac-lactide
Cui, Yu; Gu, Weikai; Wang, Yaorong; Zhao, Bei; Yao, Yingming; Shen, Qi; Catal. Sci. Technol. 5 (2015) 3302–; doi:10.1039/C5CY00322A

data_1519366
_publ_section_title
;
 Synthesis and characterization of rare-earth metal complexes supported by
 a new pentadentate Schiff base and their application in heteroselective
 polymerization of rac-lactide
;
_journal_issue                   6
_journal_name_full               'Catal. Sci. Technol.'
_journal_page_first              3302
_journal_paper_doi               10.1039/C5CY00322A
_journal_volume                  5
_journal_year                    2015
_chemical_formula_moiety         'C48 H68 N3 O3 Si2 Y, C4H8O'
_chemical_formula_sum            'C52 H76 N3 O4 Si2 Y'
_chemical_formula_weight         952.25
_chemical_name_systematic        'complex 7'
_chemical_properties_physical
'Air-sensitive, Moisture-sensitive, Oxygen-sensitive'
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
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_atom_sites_solution_secondary   difmap
_audit_block_doi                 10.5517/cc149j43
_audit_creation_method           SHELXL-97
_audit_update_record
;
2015-03-03 deposited with the CCDC.
2015-04-13 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 98.333(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   17.6572(6)
_cell_length_b                   14.6349(5)
_cell_length_c                   20.3043(7)
_cell_measurement_reflns_used    7754
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      27.1730
_cell_measurement_theta_min      3.0840
_cell_volume                     5191.5(3)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.36.32 (release 02-08-2013 CrysAlis171 .NET)
(compiled Aug  2 2013,16:46:58)
;
_computing_data_collection
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CrysAlisPro, Agilent Technologies,
Version 1.171.36.32 (release 02-08-2013 CrysAlis171 .NET)
(compiled Aug  2 2013,16:46:58)
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_computing_data_reduction
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CrysAlisPro, Agilent Technologies,
Version 1.171.36.32 (release 02-08-2013 CrysAlis171 .NET)
(compiled Aug  2 2013,16:46:58)
;
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      223(2)
_diffrn_detector_area_resol_mean 10.4471
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Xcalibur, Atlas, Gemini'
_diffrn_measurement_method       '\w 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  0.0714
_diffrn_reflns_av_sigmaI/netI    0.0875
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            37436
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         2.78
_exptl_absorpt_coefficient_mu    1.214
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.60283
_exptl_absorpt_correction_type   multi-scan
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CrysAlisPro, Agilent Technologies,
Version 1.171.36.32 (release 02-08-2013 CrysAlis171 .NET)
(compiled Aug  2 2013,16:46:58)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            'clear light yellow'
_exptl_crystal_density_diffrn    1.218
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2032
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.334
_refine_diff_density_min         -0.390
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.976
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     577
_refine_ls_number_reflns         10607
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.976
_refine_ls_R_factor_all          0.0815
_refine_ls_R_factor_gt           0.0460
_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^)+(0.0297P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0783
_refine_ls_wR_factor_ref         0.0878
_reflns_number_gt                7441
_reflns_number_total             10607
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5cy00322a2.cif
_cod_data_source_block           g140725b
_cod_depositor_comments
'Adding full bibliography for 1519361--1519366.cif.'
_cod_database_code               1519366