Hypervalent neutral O-donor ligand complexes of silicon tetrafluoride, comparisons with other group 14 tetrafluorides and a search for soft donor ligand complexes.
George, Kathryn; Hector, Andrew L.; Levason, William; Reid, Gillian; Sanderson, George; Webster, Michael; Zhang, Wenjian; Dalton transactions (Cambridge, England : 2003) 40 (2011) 1584–1593; doi:10.1039/c0dt01115k

data_7021860
_publ_section_title
;
 Hypervalent neutral O-donor ligand complexes of silicon tetrafluoride,
 comparisons with other group 14 tetrafluorides and a search for soft
 donor ligand complexes.
;
_journal_issue                   7
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1584
_journal_page_last               1593
_journal_paper_doi               10.1039/c0dt01115k
_journal_volume                  40
_journal_year                    2011
_chemical_formula_moiety         'C10 H10 F4 N2 O2 Si'
_chemical_formula_structural     '(C5 H5 N O)2 (F4 Si)'
_chemical_formula_sum            'C10 H10 F4 N2 O2 Si'
_chemical_formula_weight         294.29
_chemical_name_systematic
;
cis-tetrafluorobis(pyridine 1-oxide)silicon(IV)
;
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2010-08-05
_audit_creation_method           'SHELXL-97 + hand edit'
_cell_angle_alpha                90.00
_cell_angle_beta                 105.119(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.7086(15)
_cell_length_b                   12.844(3)
_cell_length_c                   12.532(2)
_cell_measurement_reflns_used    2775
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     1197.8(4)
_computing_cell_refinement       'DENZO (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Hooft, R.W.W., 1998)'
_computing_data_reduction        'DENZO (Otwinowski & Minor, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.975
_diffrn_measured_fraction_theta_max 0.975
_diffrn_measurement_device_type  'Bruker-Nonius 95mm CCD camera on \k-goniostat'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  '10cm confocal mirrors'
_diffrn_radiation_source         'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0656
_diffrn_reflns_av_sigmaI/netI    0.0587
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            13512
_diffrn_reflns_theta_full        27.69
_diffrn_reflns_theta_max         27.69
_diffrn_reflns_theta_min         3.16
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.248
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.8612
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'G.M. Sheldrick, (2007). SADABS. Version 2007/2. Bruker AXS Inc.'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.632
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             600
_exptl_crystal_size_max          0.05
_exptl_crystal_size_mid          0.03
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.377
_refine_diff_density_min         -0.380
_refine_diff_density_rms         0.088
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.085
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     172
_refine_ls_number_reflns         2737
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.085
_refine_ls_R_factor_all          0.1060
_refine_ls_R_factor_gt           0.0664
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0000P)^2^+3.8546P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1096
_refine_ls_wR_factor_ref         0.1265
_reflns_number_gt                1937
_reflns_number_total             2737
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            c0dt01115k.txt
_cod_data_source_block           10wz729a
_cod_depositor_comments
'Adding full bibliography for 7021854--7021860.cif.'
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7021860