Reaction of the (Pentamethylcyclopentadienyl)silicon(II) Cation with a Sterically Encumbered β-Diketiminato Anion: Unexpected Formation of a Tricyclic Silicon(IV) Compound
Jutzi, Peter; Leszczyńska, Kinga; Mix, Andreas; Neumann, Beate; Schoeller, Wolfgang W.; Stammler, Hans-Georg; Organometallics 28 (2009) 1985–; doi:10.1021/om9001457

data_4069340
_publ_section_title
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 Reaction of the (Pentamethylcyclopentadienyl)silicon(II) Cation with a
 Sterically Encumbered \b-Diketiminato Anion: Unexpected Formation of a
 Tricyclic Silicon(IV) Compound
;
_journal_issue                   7
_journal_name_full               Organometallics
_journal_page_first              1985
_journal_paper_doi               10.1021/om9001457
_journal_volume                  28
_journal_year                    2009
_chemical_formula_moiety         'C33 H51 Li N2 O2'
_chemical_formula_sum            'C33 H51 Li N2 O2'
_chemical_formula_weight         514.70
_chemical_name_systematic        ?
_space_group_IT_number           62
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_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                   14.4427(5)
_cell_length_b                   21.3898(5)
_cell_length_c                   10.4885(4)
_cell_measurement_reflns_used    9700
_cell_measurement_temperature    220(2)
_cell_measurement_theta_max      25.028
_cell_measurement_theta_min      2.910
_cell_volume                     3240.18(18)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect, Bruker AXS, 2004'
_computing_data_reduction
'Denzo and Scalepack (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'SHELXTL-PLUS (1990)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      220(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       CCD
_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  0.06
_diffrn_reflns_av_sigmaI/netI    0.0319
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            21017
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.98
_exptl_absorpt_coefficient_mu    0.064
_exptl_absorpt_correction_T_max  0.9962
_exptl_absorpt_correction_T_min  0.9811
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'Denzo and Scalepack (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.055
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       fragment
_exptl_crystal_F_000             1128
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.191
_refine_diff_density_min         -0.136
_refine_diff_density_rms         0.028
_refine_ls_extinction_coef       0.018(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.028
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     207
_refine_ls_number_reflns         2942
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          0.0801
_refine_ls_R_factor_gt           0.0521
_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^)+(0.0674P)^2^+0.8407P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1289
_refine_ls_wR_factor_ref         0.1488
_reflns_number_gt                2039
_reflns_number_total             2942
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om9001457_si_002.cif
_cod_data_source_block           Li[HC(CMeN(Aryl)2]DME
_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 1715 2011-07-08 13:25:40Z adriana 
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_cod_original_cell_volume        3240.17(18)
_cod_database_code               4069340