Hypercoordinate Silacycloalkanes: Step-by-Step Tuning of N→Si Interactions§
Brendler, Erica; Wächtler, Erik; Wagler, Jörg; Organometallics 28 (2009) 5459–; doi:10.1021/om900636e

data_4070170
_publ_section_title
;
 Hypercoordinate Silacycloalkanes: Step-by-Step Tuning of N\\rightarrow Si
 Interactions&#x00A7;
;
_journal_issue                   18
_journal_name_full               Organometallics
_journal_page_first              5459
_journal_paper_doi               10.1021/om900636e
_journal_volume                  28
_journal_year                    2009
_chemical_formula_moiety         'C21 H18 N2 O2 Si'
_chemical_formula_sum            'C21 H18 N2 O2 Si'
_chemical_formula_weight         358.46
_chemical_name_systematic
;
  1,1-bis[kappa-O,N-(8-oxyquinolinato)]silacyclobutane
;
_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                 122.0620(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.8161(3)
_cell_length_b                   7.5069(2)
_cell_length_c                   15.4108(4)
_cell_measurement_reflns_used    4033
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      29.90
_cell_measurement_theta_min      2.86
_cell_volume                     1648.68(7)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'ORTEP32 (Farugia)'
_computing_publication_material  'Ciftab (Sheldrick)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'CCD area detector'
_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     0.71073
_diffrn_reflns_av_R_equivalents  0.0348
_diffrn_reflns_av_sigmaI/netI    0.0256
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            15944
_diffrn_reflns_theta_full        30.00
_diffrn_reflns_theta_max         30.00
_diffrn_reflns_theta_min         2.86
_exptl_absorpt_coefficient_mu    0.162
_exptl_absorpt_correction_T_max  0.9730
_exptl_absorpt_correction_T_min  0.9312
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.444
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       piece
_exptl_crystal_F_000             752
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.401
_refine_diff_density_min         -0.257
_refine_diff_density_rms         0.055
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.076
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     123
_refine_ls_number_reflns         2384
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.076
_refine_ls_R_factor_all          0.0474
_refine_ls_R_factor_gt           0.0371
_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^)+(0.0474P)^2^+1.2298P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0948
_refine_ls_wR_factor_ref         0.0994
_reflns_number_gt                1977
_reflns_number_total             2384
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om900636e_si_001.cif
_cod_data_source_block           compd1_LowTemp
_cod_original_sg_symbol_Hall     -C2yc
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               4070170