[(C8H20N)2(SiF6).2H2O]
Horton, Peter N.; Hursthouse, Michael B.; Taylor, Peter G.; Crystal Structure Report Archive  (2010) 1346–; doi:

data_1520475
_publ_section_title
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 [(C8H20N)2(SiF6).2H2O]
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_journal_name_full               'Crystal Structure Report Archive'
_journal_page_first              1346
_journal_year                    2010
_chemical_formula_sum            'C16 H44 F6 N2 O2 Si'
_chemical_formula_weight         438.62
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 91.5320(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   6.98360(10)
_cell_length_b                   13.2116(2)
_cell_length_c                   12.0495(2)
_cell_measurement_reflns_used    5016
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.485
_cell_measurement_theta_min      2.910
_cell_volume                     1111.34(3)
_computing_cell_refinement
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_data_collection       'COLLECT (Hooft, R.W.W., 1998)'
_computing_data_reduction
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_molecular_graphics    'ORTEP3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type
'Bruker-Nonius Roper CCD camera on \k-goniostat'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0520
_diffrn_reflns_av_sigmaI/netI    0.0304
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            25210
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.30
_exptl_absorpt_coefficient_mu    0.168
_exptl_absorpt_correction_T_max  0.9544
_exptl_absorpt_correction_T_min  0.9327
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2007/2 (Sheldrick, G.M., 2007)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.311
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             476
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.38
_exptl_crystal_size_min          0.28
_refine_diff_density_max         0.605
_refine_diff_density_min         -0.679
_refine_diff_density_rms         0.205
_refine_ls_extinction_coef       0.37(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   1.299
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     167
_refine_ls_number_reflns         2536
_refine_ls_number_restraints     259
_refine_ls_restrained_S_all      1.237
_refine_ls_R_factor_all          0.0712
_refine_ls_R_factor_gt           0.0660
_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^)+(0.0904P)^2^+0.1573P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1537
_refine_ls_wR_factor_ref         0.1577
_reflns_number_gt                2327
_reflns_number_total             2536
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            eCrystal-1346.cif
_cod_data_source_block           2010src0243
_cod_depositor_comments
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Citation :
Horton, Peter N. and Hursthouse, Michael B. and 
Taylor, Peter G. (2010) 
University of Southampton, Crystal Structure Report Archive. 
(doi:10.5258/ecrystals/1346)

More at:
http://ecrystals.chem.soton.ac.uk/1346/
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_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               1520475