Neutral ansa-bis(fluorenyl)silane neodymium borohydrides: synthesis, structural study and behaviour as catalysts in butadiene–ethylene copolymerisation
Cortial, Guillaume; Le Goff, Xavier-Frederic; Bousquié, Magali; Boisson, Christophe; Le Floch, Pascal; Nief, François; Thuilliez, Julien; New Journal of Chemistry 34 (2010) 2290–; doi:10.1039/c0nj00274g

data_7053595
_publ_section_title
;
 Neutral ansa-bis(fluorenyl)silane neodymium borohydrides: synthesis,
 structural study and behaviour as catalysts in butadiene--ethylene
 copolymerisation
;
_journal_issue                   10
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              2290
_journal_paper_doi               10.1039/c0nj00274g
_journal_volume                  34
_journal_year                    2010
_chemical_formula_moiety         'C30 H28 Si'
_chemical_formula_sum            'C30 H28 Si'
_chemical_formula_weight         416.61
_space_group_IT_number           60
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2n 2ab'
_symmetry_space_group_name_H-M   'P b c n'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   17.026(1)
_cell_length_b                   9.952(1)
_cell_length_c                   13.230(1)
_cell_measurement_reflns_used    24249
_cell_measurement_temperature    150.0(1)
_cell_measurement_theta_max      27.878
_cell_measurement_theta_min      0.998
_cell_volume                     2241.7(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150.0(1)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0473
_diffrn_reflns_av_sigmaI/netI    0.0316
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            14437
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         3.30
_exptl_absorpt_coefficient_mu    0.120
_exptl_absorpt_correction_T_max  0.9905
_exptl_absorpt_correction_T_min  0.9536
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.234
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Plate
_exptl_crystal_F_000             888
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.08
_refine_diff_density_max         2.507
_refine_diff_density_min         -0.384
_refine_diff_density_rms         0.088
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.064
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     142
_refine_ls_number_reflns         2296
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.064
_refine_ls_R_factor_all          0.1067
_refine_ls_R_factor_gt           0.0892
_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^)+(0.1670P)^2^+1.5409P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2360
_refine_ls_wR_factor_ref         0.2523
_reflns_number_gt                1797
_reflns_number_total             2296
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0nj00274g-2.txt
_cod_data_source_block           gc671
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      'P b c n '
_cod_database_code               7053595