Rare-Earth-Metal Mixed Hydride/Aryloxide Complexes Bearing Mono(cyclopentadienyl) Ligands. Synthesis, CO2Fixation, and Catalysis on Copolymerization of CO2with Cyclohexene Oxide
Cui, Dongmei; Nishiura, Masayoshi; Tardif, Olivier; Hou, Zhaomin; Organometallics 27 (2008) 2428–; doi:10.1021/om800170x

data_4071438
_publ_section_title
;
 Rare-Earth-Metal Mixed Hydride/Aryloxide Complexes Bearing
 Mono(cyclopentadienyl) Ligands. Synthesis, CO2Fixation, and Catalysis on
 Copolymerization of CO2with Cyclohexene Oxide
;
_journal_issue                   11
_journal_name_full               Organometallics
_journal_page_first              2428
_journal_paper_doi               10.1021/om800170x
_journal_volume                  27
_journal_year                    2008
_chemical_formula_sum            'C54 H90 O2 Si2 Y2'
_chemical_formula_weight         1005.26
_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                 91.044(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   13.2388(11)
_cell_length_b                   10.2802(9)
_cell_length_c                   20.5965(18)
_cell_measurement_temperature    193(2)
_cell_volume                     2802.7(4)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      193(2)
_diffrn_measured_fraction_theta_full 0.955
_diffrn_measured_fraction_theta_max 0.955
_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  0.0336
_diffrn_reflns_av_sigmaI/netI    0.0607
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            9147
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.98
_exptl_absorpt_coefficient_mu    2.138
_exptl_absorpt_correction_T_max  0.5464
_exptl_absorpt_correction_T_min  0.4418
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_density_diffrn    1.191
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1072
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.309
_refine_diff_density_min         -0.546
_refine_diff_density_rms         0.074
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.020
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     289
_refine_ls_number_reflns         4713
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.020
_refine_ls_R_factor_all          0.0681
_refine_ls_R_factor_gt           0.0405
_refine_ls_shift/su_max          0.006
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0400P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0845
_refine_ls_wR_factor_ref         0.0900
_reflns_number_gt                3264
_reflns_number_total             4713
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om800170x-file005.cif
_cod_data_source_block           311cui2
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               4071438