1,4-Selective Polymerization of 1,3-Cyclohexadiene and Copolymerization with Styrene by Cationic Half-Sandwich Fluorenyl Rare Earth Metal Alkyl Catalysts
Du, Gaixia; Long, Yingyun; Xue, Jiaping; Zhang, Shaowen; Dong, Yuping; Li, Xiaofang; Macromolecules 48 (2015) 1627–; doi:10.1021/acs.macromol.5b00037

data_1554148
_publ_section_title
;
 1,4-Selective Polymerization of 1,3-Cyclohexadiene and Copolymerization
 with Styrene by Cationic Half-Sandwich Fluorenyl Rare Earth Metal Alkyl
 Catalysts
;
_journal_issue                   6
_journal_name_full               Macromolecules
_journal_page_first              1627
_journal_paper_doi               10.1021/acs.macromol.5b00037
_journal_volume                  48
_journal_year                    2015
_chemical_formula_sum            'C28 H47 O Si3 Y'
_chemical_formula_weight         572.84
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21/c 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                 104.60(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.400(2)
_cell_length_b                   15.800(3)
_cell_length_c                   20.000(4)
_cell_measurement_temperature    173(2)
_cell_volume                     3180.3(12)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_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  0.0357
_diffrn_reflns_av_sigmaI/netI    0.0371
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            19789
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         1.66
_exptl_absorpt_coefficient_mu    1.964
_exptl_absorpt_correction_T_max  0.4926
_exptl_absorpt_correction_T_min  0.4719
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_density_diffrn    1.196
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1216
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.43
_exptl_crystal_size_min          0.42
_refine_diff_density_max         0.563
_refine_diff_density_min         -0.358
_refine_diff_density_rms         0.118
_refine_ls_extinction_method     CONSTR
_refine_ls_goodness_of_fit_ref   1.158
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     307
_refine_ls_number_reflns         5604
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.158
_refine_ls_R_factor_all          0.0440
_refine_ls_R_factor_gt           0.0393
_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^)+(0.0545P)^2^+0.8944P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1042
_refine_ls_wR_factor_ref         0.1068
_reflns_number_gt                5175
_reflns_number_total             5604
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ma5b00037_si_004.cif
_cod_data_source_block           a21
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_cell_volume        3180.3(11)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               1554148