Phosphazene-Functionalized Cyclopentadienyl and Its Derivatives Ligated Rare-Earth Metal Alkyl Complexes: Synthesis, Structures, and Catalysis on Ethylene Polymerization
Jian, Zhongbao; Petrov, Alex R.; Hangaly, Noa K.; Li, Shihui; Rong, Weifeng; Mou, Zehuai; Rufanov, Konstantin A.; Harms, Klaus; Sundermeyer, Jörg; Cui, Dongmei; Organometallics 31 (2012) 4267–; doi:10.1021/om300263p

data_4078485
_publ_section_title
;
 Phosphazene-Functionalized Cyclopentadienyl and Its Derivatives Ligated
 Rare-Earth Metal Alkyl Complexes: Synthesis, Structures, and Catalysis on
 Ethylene Polymerization
;
_journal_issue                   11
_journal_name_full               Organometallics
_journal_page_first              4267
_journal_paper_doi               10.1021/om300263p
_journal_volume                  31
_journal_year                    2012
_chemical_formula_sum            'C48 H63 N O P Si2 Y'
_chemical_formula_weight         846.05
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_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                78.9320(10)
_cell_angle_beta                 74.1660(10)
_cell_angle_gamma                71.1960(10)
_cell_formula_units_Z            2
_cell_length_a                   11.5603(6)
_cell_length_b                   12.7372(7)
_cell_length_c                   17.6573(10)
_cell_measurement_temperature    185(2)
_cell_volume                     2352.3(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      185(2)
_diffrn_measured_fraction_theta_full 0.975
_diffrn_measured_fraction_theta_max 0.975
_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  0.0194
_diffrn_reflns_av_sigmaI/netI    0.0487
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            12907
_diffrn_reflns_theta_full        26.04
_diffrn_reflns_theta_max         26.04
_diffrn_reflns_theta_min         1.70
_exptl_absorpt_coefficient_mu    1.358
_exptl_absorpt_correction_T_max  0.7824
_exptl_absorpt_correction_T_min  0.7106
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_density_diffrn    1.194
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             896
_exptl_crystal_size_max          0.27
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.579
_refine_diff_density_min         -0.505
_refine_diff_density_rms         0.065
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.030
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     496
_refine_ls_number_reflns         9064
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.030
_refine_ls_R_factor_all          0.0673
_refine_ls_R_factor_gt           0.0473
_refine_ls_shift/su_max          0.086
_refine_ls_shift/su_mean         0.003
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0685P)^2^+0.2454P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1120
_refine_ls_wR_factor_ref         0.1214
_reflns_number_gt                7006
_reflns_number_total             9064
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om300263p_si_002.cif
_cod_data_source_block           5b
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4078485