The synthesis and characterisation of some Group 14 compounds containing the 2,4,6-(CF3)3C6H2, 2,6-(CF3)2C6H3 or 2,4-(CF3)2C6H3 ligands
Andrei S. Batsanov; Stéphanie M. Cornet; Keith B. Dillon; Andrés E. Goeta; Amber L. Thompson; Bao Yu Xue; Dalton Trans.  (2003) 2496–2502; doi:10.1039/b302544f

data_7012910
_publ_section_title
;
 The synthesis and characterisation of some Group 14 compounds
 containing the 2,4,6-(CF3)3C6H2, 2,6-(CF3)2C6H3 or 2,4-(CF3)2C6H3
 ligands
;
_journal_issue                   12
_journal_name_full               'Dalton Trans.'
_journal_page_first              2496
_journal_page_last               2502
_journal_paper_doi               10.1039/b302544f
_journal_year                    2003
_chemical_formula_moiety         'C16 H6 F14 Si'
_chemical_formula_sum            'C16 H6 F14 Si'
_chemical_formula_weight         492.30
_chemical_melting_point          ?
_chemical_name_common
Bis-(2,6-bis-trifluoromethyl-phenyl)-difluoro-silane
_chemical_name_systematic
; 
Bis-(2,6-bis-trifluoromethyl-phenyl)-difluoro-silane
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                98.48(1)
_cell_angle_beta                 100.30(1)
_cell_angle_gamma                112.50(1)
_cell_formula_units_Z            2
_cell_length_a                   8.221(2)
_cell_length_b                   9.644(2)
_cell_length_c                   12.267(3)
_cell_measurement_reflns_used    5211
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      54.99
_cell_measurement_theta_min      4.707
_cell_volume                     858.8(4)
_computing_cell_refinement       'SMART-NT V5.0 (Bruker, 1998)'
_computing_data_collection       'SMART-NT V5.0 (Bruker, 1998)'
_computing_data_reduction        'SMART-NT V5.0 (Bruker, 1998)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 8
_diffrn_measured_fraction_theta_full 0.938
_diffrn_measured_fraction_theta_max 0.914
_diffrn_measurement_device_type  'Bruker SMART CCD 1K area detector'
_diffrn_measurement_method       \w-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  0.0224
_diffrn_reflns_av_sigmaI/netI    0.0347
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            6314
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         1.74
_exptl_absorpt_coefficient_mu    0.284
_exptl_absorpt_correction_T_max  0.9667
_exptl_absorpt_correction_T_min  0.9147
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (G.M.Sheldrick, 1998)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.904
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    .
_exptl_crystal_description       block
_exptl_crystal_F_000             484
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.424
_refine_diff_density_min         -0.247
_refine_diff_density_rms         0.048
_refine_ls_extinction_coef       none
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     280
_refine_ls_number_reflns         3601
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.0448
_refine_ls_R_factor_gt           0.0343
_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^)+(0.0342P)^2^+0.3334P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0793
_refine_ls_wR_factor_ref         0.0838
_reflns_number_gt                2970
_reflns_number_total             3601
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b302544f.txt
_cod_data_source_block           (5)
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to '/home/adriana/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1555 2011-01-17 13:19:09Z saulius 

The following automatic conversions were performed:

'_chemical_melting_point' value 'not measured' was changed to '?' -
the value is undefined or not given.

Automatic conversion script
Id: cif_fix_values 1569 2011-02-09 13:29:24Z adriana 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7012910