Unbridged Zirconium and Titanium Metallocenes with Seven- or Eight-Saturated Fused-Ring Ligands: a Route for the Synthesis of Stereoblock Polypropene
Losio, Simona; Zecchi, Gaetano; Bertini, Fabio; Sacchi, Maria Carmela; Bertolasi, Valerio; Polo, Eleonora; Macromolecules 38 (2005) 7231–; doi:10.1021/ma050599t

data_1506421
_publ_section_title
;
 Unbridged Zirconium and Titanium Metallocenes with Seven- or
 Eight-Saturated Fused-Ring Ligands:&#x00A0; a Route for the Synthesis of
 Stereoblock Polypropene
;
_journal_issue                   17
_journal_name_full               Macromolecules
_journal_page_first              7231
_journal_paper_doi               10.1021/ma050599t
_journal_volume                  38
_journal_year                    2005
_chemical_formula_moiety         'C34 H38 Cl2 Zr'
_chemical_formula_sum            'C34 H38 Cl2 Zr'
_chemical_formula_weight         608.76
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 94.540(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   18.901(2)
_cell_length_b                   6.512(1)
_cell_length_c                   23.870(3)
_cell_measurement_reflns_used    4506
_cell_measurement_temperature    150
_cell_measurement_theta_max      24.0
_cell_measurement_theta_min      2.9
_cell_volume                     2928.8(7)
_computing_cell_refinement       'Denzo SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 1997)'
_computing_data_reduction        'Denzo SMN (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'ORTEP III (Burnett & Johnson, 1996)'
_computing_publication_material
; 
SHELXL-97 (Sheldrick, 1997), PARST (Nardelli, 1995)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Altomare et al., 1999)'
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_diffrn_measurement_method       '\f scans and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.055
_diffrn_reflns_av_sigmaI/netI    0.0367
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            4506
_diffrn_reflns_theta_full        24.00
_diffrn_reflns_theta_max         24.0
_diffrn_reflns_theta_min         2.9
_exptl_absorpt_coefficient_mu    0.579
_exptl_absorpt_correction_T_max  0.894
_exptl_absorpt_correction_T_min  0.805
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
;
SORTAV (R.H. Blessing, Acta Crystallogr., 1995, A51, 33)
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.380
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       irregular
_exptl_crystal_F_000             1264
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.464
_refine_diff_density_min         -0.394
_refine_diff_density_rms         0.054
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.224
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     168
_refine_ls_number_reflns         2303
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.224
_refine_ls_R_factor_all          0.0376
_refine_ls_R_factor_gt           0.0358
_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^)+(0.0000P)^2^+21.6980P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0953
_refine_ls_wR_factor_ref         0.0965
_reflns_number_gt                1021
_reflns_number_total             2303
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            ma050599tsi20050322_060658.cif
_cod_data_source_block           (I)
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               1506421