Half-sandwich rare-earth-metal derivatives bearing pyrrolidinyl-functionalized cyclopentadienyl ligand: synthesis, characterization and catalysis in syndiospecific polymerization of styrene
Luo, Yunjie; Chi, Shuhui; Chen, Jue; New Journal of Chemistry 37 (2013) 2675–; doi:10.1039/c3nj00214d

data_7053073
_publ_section_title
;
 Half-sandwich rare-earth-metal derivatives bearing
 pyrrolidinyl-functionalized cyclopentadienyl ligand: synthesis,
 characterization and catalysis in syndiospecific polymerization of
 styrene
;
_journal_issue                   9
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              2675
_journal_paper_doi               10.1039/c3nj00214d
_journal_volume                  37
_journal_year                    2013
_chemical_formula_moiety         'C23 H54 N3 Si5 Y'
_chemical_formula_sum            'C23 H54 N3 Si5 Y'
_chemical_formula_weight         602.05
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_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
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 97.036(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.9340(4)
_cell_length_b                   19.5918(7)
_cell_length_c                   17.4660(13)
_cell_measurement_reflns_used    3335
_cell_measurement_temperature    220(2)
_cell_measurement_theta_max      29.3736
_cell_measurement_theta_min      3.3081
_cell_volume                     3373.7(3)
_computing_cell_refinement       'CrysAlisPro, Agilent Technologies'
_computing_data_collection       'CrysAlisPro, Agilent Technologies'
_computing_data_reduction        'CrysAlisPro, Agilent Technologies'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      220(2)
_diffrn_detector_area_resol_mean 10.4692
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Xcalibur, Atlas, Gemini'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.7107
_diffrn_reflns_av_R_equivalents  0.0399
_diffrn_reflns_av_sigmaI/netI    0.0619
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            15282
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         3.33
_exptl_absorpt_coefficient_mu    1.922
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.82037
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.21 (release 20-01-2012 CrysAlis171 .NET)
(compiled Jan 23 2012,18:06:46)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_density_diffrn    1.185
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1288
_exptl_crystal_size_max          0.80
_exptl_crystal_size_mid          0.60
_exptl_crystal_size_min          0.45
_refine_diff_density_max         0.319
_refine_diff_density_min         -0.383
_refine_diff_density_rms         0.074
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.000
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     319
_refine_ls_number_reflns         6249
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.000
_refine_ls_R_factor_all          0.0684
_refine_ls_R_factor_gt           0.0436
_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^)+(0.0506P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0906
_refine_ls_wR_factor_ref         0.0971
_reflns_number_gt                4769
_reflns_number_total             6249
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3nj00214d.txt
_cod_data_source_block           g120725b
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7053073