Lanthanide(III) 4,6-Dimethylpyrimidine-2-thionate Complexes as Efficient Catalysts for Isocyanate Cyclodimerization
Li, Hong-Xi; Cheng, Mei-Ling; Wang, He-Ming; Yang, Xiao-Juan; Ren, Zhi-Gang; Lang, Jian-Ping; Organometallics 30 (2011) 208–214; doi:10.1021/om100671s

data_4063360
_publ_section_title
;
 Lanthanide(III) 4,6-Dimethylpyrimidine-2-thionate Complexes as Efficient
 Catalysts for Isocyanate Cyclodimerization
;
_journal_issue                   2
_journal_name_full               Organometallics
_journal_page_first              208
_journal_page_last               214
_journal_paper_doi               10.1021/om100671s
_journal_volume                  30
_journal_year                    2011
_chemical_formula_moiety         'C24 H28 N8 S4 Sm Li '
_chemical_formula_sum            'C24 H28 Li N8 S4 Sm'
_chemical_formula_weight         714.12
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           82
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'I -4'
_symmetry_space_group_name_H-M   'I -4'
_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            2
_cell_length_a                   10.8371(15)
_cell_length_b                   10.8371(15)
_cell_length_c                   13.748(3)
_cell_measurement_reflns_used    3651
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      25.3491
_cell_measurement_theta_min      3.7592
_cell_volume                     1614.6(5)
_computing_cell_refinement       CrystalClear
_computing_data_collection       CrystalClear
_computing_data_reduction        CrystalStructure
_computing_molecular_graphics    'sheltl-97 (Sheldrick, 1997)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      193(2)
_diffrn_detector_area_resol_mean 7.31
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Rigaku Mercury'
_diffrn_measurement_method       \w
_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  0.0352
_diffrn_reflns_av_sigmaI/netI    0.0341
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            7887
_diffrn_reflns_theta_full        25.34
_diffrn_reflns_theta_max         25.34
_diffrn_reflns_theta_min         3.76
_exptl_absorpt_coefficient_mu    2.103
_exptl_absorpt_correction_T_max  0.6778
_exptl_absorpt_correction_T_min  0.5012
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Jacobson, R. (1998) Private communication'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.469
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             714
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.34
_exptl_crystal_size_min          0.20
_platon_squeeze_details
;
;
_refine_diff_density_max         0.504
_refine_diff_density_min         -0.322
_refine_diff_density_rms         0.074
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.017(18)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.146
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     88
_refine_ls_number_reflns         1492
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.146
_refine_ls_R_factor_all          0.0232
_refine_ls_R_factor_gt           0.0231
_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^)+(0.0384P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0673
_refine_ls_wR_factor_ref         0.0673
_reflns_number_gt                1490
_reflns_number_total             1492
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om100671s_si_002.cif
_cod_data_source_block           Li[Sm(dmpymt)4]
_cod_original_cell_volume        1614.6(4)
_cod_original_formula_sum        'C24 H28 N8 S4 Sm Li '
_cod_database_code               4063360