1,1-Olefin-bridged bis-(2-indenyl) metallocenes of titanium and zirconium.
Morton, Jason G. M.; Al-Shammari, Haif; Sun, Yunshan; Zhu, Jiangtao; Stephan, Douglas W.; Dalton transactions (Cambridge, England : 2003) 43 (2014) 13219–13231; doi:10.1039/c4dt01583e

data_7031816
_publ_section_title
;
 1,1-Olefin-bridged bis-(2-indenyl) metallocenes of titanium and
 zirconium.
;
_journal_issue                   35
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              13219
_journal_page_last               13231
_journal_paper_doi               10.1039/c4dt01583e
_journal_volume                  43
_journal_year                    2014
_chemical_formula_sum            'C44 H50 Si2'
_chemical_formula_weight         635.02
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
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_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                103.273(6)
_cell_angle_beta                 93.615(7)
_cell_angle_gamma                92.848(6)
_cell_formula_units_Z            2
_cell_length_a                   8.3973(11)
_cell_length_b                   12.1375(14)
_cell_length_c                   18.422(2)
_cell_measurement_temperature    150(2)
_cell_volume                     1819.8(4)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_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  0.0408
_diffrn_reflns_av_sigmaI/netI    0.0478
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            42063
_diffrn_reflns_theta_full        31.12
_diffrn_reflns_theta_max         31.12
_diffrn_reflns_theta_min         1.14
_exptl_absorpt_coefficient_mu    0.127
_exptl_absorpt_correction_T_max  0.9799
_exptl_absorpt_correction_T_min  0.9738
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.159
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       blocks
_exptl_crystal_F_000             684
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.390
_refine_diff_density_min         -0.254
_refine_diff_density_rms         0.053
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     415
_refine_ls_number_reflns         11574
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0694
_refine_ls_R_factor_gt           0.0451
_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^)+(0.0504P)^2^+0.5099P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1062
_refine_ls_wR_factor_ref         0.1202
_reflns_number_gt                8550
_reflns_number_total             11574
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4dt01583e1.cif
_cod_data_source_block           jgmm023_0m
_cod_depositor_comments
'Adding full bibliography for 7031816--7031825.cif.'
_cod_original_cell_volume        1819.9(4)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7031816