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_7053072
_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 Sc Si5'
_chemical_formula_sum            'C23 H54 N3 Sc Si5'
_chemical_formula_weight         558.10
_chemical_name_systematic
;
?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                108.818(6)
_cell_angle_beta                 93.485(8)
_cell_angle_gamma                94.941(10)
_cell_formula_units_Z            2
_cell_length_a                   10.7456(16)
_cell_length_b                   10.7843(13)
_cell_length_c                   16.231(2)
_cell_measurement_reflns_used    4927
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      3.1
_cell_volume                     1765.9(4)
_computing_cell_refinement       CrystalClear
_computing_data_collection       CrystalClear
_computing_data_reduction        CrystalStructure
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      223(2)
_diffrn_detector_area_resol_mean 14.63
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'Rigaku Saturn'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0277
_diffrn_reflns_av_sigmaI/netI    0.0452
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            14209
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         3.13
_exptl_absorpt_coefficient_mu    0.393
_exptl_absorpt_correction_T_max  0.895
_exptl_absorpt_correction_T_min  0.808
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Jacobson, R. (1998) Private communication'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.050
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             608
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.517
_refine_diff_density_min         -0.540
_refine_diff_density_rms         0.062
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.099
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     323
_refine_ls_number_reflns         6501
_refine_ls_number_restraints     33
_refine_ls_restrained_S_all      1.108
_refine_ls_R_factor_all          0.1150
_refine_ls_R_factor_gt           0.0790
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1361P)^2^+0.4044P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2222
_refine_ls_wR_factor_ref         0.2485
_reflns_number_gt                4245
_reflns_number_total             6501
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3nj00214d.txt
_cod_data_source_block           shelxl2
_cod_original_cell_volume        1766.0(4)
_cod_database_code               7053072