data_kath7am _audit_creation_method SHELXL-97 _chemical_name_systematic ; ? ; _chemical_name_common ? _chemical_melting_point ? _chemical_formula_moiety 'C24 H10 F8 Si' _chemical_formula_sum 'C24 H10 F8 Si' _chemical_formula_weight 478.41 loop_ _atom_type_symbol _atom_type_description _atom_type_scat_dispersion_real _atom_type_scat_dispersion_imag _atom_type_scat_source 'C' 'C' 0.0033 0.0016 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' 'H' 'H' 0.0000 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' 'F' 'F' 0.0171 0.0103 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' 'Si' 'Si' 0.0817 0.0704 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' _symmetry_cell_setting Monoclinic _symmetry_space_group_name_H-M C2/c _symmetry_space_group_name_Hall '-C 2yc' loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' 'x, -y, z+1/2' 'x+1/2, y+1/2, z' 'x+1/2, -y+1/2, z+1/2' '-x, -y, -z' '-x, y, -z-1/2' '-x+1/2, -y+1/2, -z' '-x+1/2, y+1/2, -z-1/2' _cell_length_a 28.629(3) _cell_length_b 7.9029(9) _cell_length_c 22.483(3) _cell_angle_alpha 90.00 _cell_angle_beta 128.944(2) _cell_angle_gamma 90.00 _cell_volume 3956.3(8) _cell_formula_units_Z 8 _cell_measurement_temperature 173(2) _cell_measurement_reflns_used 1696 _cell_measurement_theta_min 2.33 _cell_measurement_theta_max 22.41 _exptl_crystal_description block _exptl_crystal_colour white _exptl_crystal_size_max .2 _exptl_crystal_size_mid .1 _exptl_crystal_size_min .1 _exptl_crystal_density_meas ? _exptl_crystal_density_diffrn 1.606 _exptl_crystal_density_method 'not measured' _exptl_crystal_F_000 1920 _exptl_absorpt_coefficient_mu 0.203 _exptl_absorpt_correction_type empirical _exptl_absorpt_correction_T_min .976 _exptl_absorpt_correction_T_max .981 _exptl_absorpt_process_details 'sadabs, 2004' _exptl_special_details ; ? ; _diffrn_ambient_temperature 173(2) _diffrn_radiation_wavelength 0.71073 _diffrn_radiation_type MoK\a _diffrn_radiation_source 'fine-focus sealed tube' _diffrn_radiation_monochromator graphite _diffrn_measurement_device_type 'CCD area detector' _diffrn_measurement_method 'phi and omega scans' _diffrn_detector_area_resol_mean ? _diffrn_standards_number 0 _diffrn_standards_interval_count 0 _diffrn_standards_interval_time 0 _diffrn_standards_decay_% 0 _diffrn_reflns_number 9635 _diffrn_reflns_av_R_equivalents 0.0343 _diffrn_reflns_av_sigmaI/netI 0.0569 _diffrn_reflns_limit_h_min -30 _diffrn_reflns_limit_h_max 31 _diffrn_reflns_limit_k_min -7 _diffrn_reflns_limit_k_max 8 _diffrn_reflns_limit_l_min -24 _diffrn_reflns_limit_l_max 24 _diffrn_reflns_theta_min 1.83 _diffrn_reflns_theta_max 23.25 _reflns_number_total 2852 _reflns_number_gt 2298 _reflns_threshold_expression >2sigma(I) _computing_data_collection 'Bruker SMART' _computing_cell_refinement 'Bruker SMART' _computing_data_reduction 'Bruker SAINT' _computing_structure_solution 'SHELXS-97 (Sheldrick, 1990)' _computing_structure_refinement 'SHELXL-97 (Sheldrick, 1997)' _computing_molecular_graphics 'Bruker SHELXTL' _computing_publication_material 'Bruker SHELXTL' _refine_special_details ; Refinement of F^2^ against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F^2^, conventional R-factors R are based on F, with F set to zero for negative F^2^. The threshold expression of F^2^ > 2sigma(F^2^) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F^2^ are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. ; _refine_ls_structure_factor_coef Fsqd _refine_ls_matrix_type full _refine_ls_weighting_scheme calc _refine_ls_weighting_details 'calc w=1/[\s^2^(Fo^2^)+(0.0000P)^2^+4.9156P] where P=(Fo^2^+2Fc^2^)/3' _atom_sites_solution_primary direct _atom_sites_solution_secondary difmap _atom_sites_solution_hydrogens geom _refine_ls_hydrogen_treatment constr _refine_ls_extinction_method none _refine_ls_extinction_coef ? _refine_ls_number_reflns 2852 _refine_ls_number_parameters 298 _refine_ls_number_restraints 0 _refine_ls_R_factor_all 0.0489 _refine_ls_R_factor_gt 0.0361 _refine_ls_wR_factor_ref 0.0884 _refine_ls_wR_factor_gt 0.0831 _refine_ls_goodness_of_fit_ref 1.032 _refine_ls_restrained_S_all 1.032 _refine_ls_shift/su_max 0.000 _refine_ls_shift/su_mean 0.000 loop_ _atom_site_label _atom_site_type_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv _atom_site_adp_type _atom_site_occupancy _atom_site_symmetry_multiplicity _atom_site_calc_flag _atom_site_refinement_flags _atom_site_disorder_assembly _atom_site_disorder_group Si1 Si 0.38703(3) 0.15361(8) 0.03264(4) 0.02611(19) Uani 1 1 d . . . F9 F 0.32459(6) -0.05954(18) -0.12382(8) 0.0377(4) Uani 1 1 d . . . C23 C 0.23066(10) -0.0664(3) -0.04267(14) 0.0292(6) Uani 1 1 d . . . F8 F 0.19464(6) -0.07212(18) -0.02366(8) 0.0382(4) Uani 1 1 d . . . C22 C 0.45723(10) 0.0248(3) 0.08841(13) 0.0279(6) Uani 1 1 d . . . C21 C 0.31716(10) 0.0219(3) -0.02899(13) 0.0252(5) Uani 1 1 d . . . C20 C 0.55286(11) -0.0493(3) 0.12224(15) 0.0403(7) Uani 1 1 d . . . H20A H 0.5827 -0.0311 0.1166 0.048 Uiso 1 1 calc R . . F7 F 0.44567(7) 0.3920(2) 0.18036(8) 0.0525(5) Uani 1 1 d . . . F6 F 0.15674(6) -0.23159(19) -0.14858(8) 0.0451(4) Uani 1 1 d . . . C19 C 0.20939(11) -0.1495(3) -0.10989(14) 0.0334(6) Uani 1 1 d . . . F5 F 0.21987(7) -0.23148(19) -0.20122(8) 0.0449(4) Uani 1 1 d . . . C18 C 0.33314(12) 0.2195(3) 0.18604(15) 0.0356(6) Uani 1 1 d . . . C17 C 0.28493(10) 0.0184(3) -0.00050(13) 0.0252(5) Uani 1 1 d . . . C16 C 0.39031(10) 0.3329(3) -0.01755(13) 0.0276(6) Uani 1 1 d . . . F4 F 0.25510(7) 0.0330(2) 0.10806(9) 0.0470(4) Uani 1 1 d . . . F3 F 0.31682(8) 0.2250(2) 0.23056(9) 0.0527(4) Uani 1 1 d . . . C15 C 0.29452(10) -0.0619(3) -0.09578(13) 0.0281(6) Uani 1 1 d . . . C14 C 0.24126(11) -0.1493(3) -0.13619(13) 0.0320(6) Uani 1 1 d . . . C13 C 0.31510(10) 0.1155(3) 0.07265(13) 0.0252(6) Uani 1 1 d . . . F2 F 0.41217(8) 0.4077(2) 0.26930(9) 0.0563(5) Uani 1 1 d . . . C12 C 0.56093(12) -0.1736(3) 0.17113(14) 0.0408(7) Uani 1 1 d . . . H12A H 0.5962 -0.2411 0.1992 0.049 Uiso 1 1 calc R . . C11 C 0.35047(11) 0.3511(3) -0.09665(14) 0.0330(6) Uani 1 1 d . . . H11A H 0.3200 0.2686 -0.1269 0.040 Uiso 1 1 calc R . . C10 C 0.38153(12) 0.3110(3) 0.20607(14) 0.0376(7) Uani 1 1 d . . . C9 C 0.36638(10) 0.2055(3) 0.09489(13) 0.0276(6) Uani 1 1 d . . . C8 C 0.30029(11) 0.1220(3) 0.12068(14) 0.0310(6) Uani 1 1 d . . . C7 C 0.35437(12) 0.4874(3) -0.13212(15) 0.0397(7) Uani 1 1 d . . . H7A H 0.3265 0.4981 -0.1862 0.048 Uiso 1 1 calc R . . C6 C 0.39778(11) 0.3019(3) 0.16022(14) 0.0341(6) Uani 1 1 d . . . C5 C 0.50148(11) 0.0485(3) 0.08155(14) 0.0332(6) Uani 1 1 d . . . H5A H 0.4964 0.1338 0.0482 0.040 Uiso 1 1 calc R . . C4 C 0.51751(13) -0.1988(4) 0.17877(16) 0.0482(8) Uani 1 1 d . . . H4A H 0.5228 -0.2845 0.2122 0.058 Uiso 1 1 calc R . . C25 C 0.43467(12) 0.4569(3) 0.02472(15) 0.0396(7) Uani 1 1 d . . . H25A H 0.4628 0.4478 0.0788 0.048 Uiso 1 1 calc R . . C3 C 0.46640(12) -0.1009(4) 0.13841(15) 0.0428(7) Uani 1 1 d . . . H3A H 0.4369 -0.1192 0.1447 0.051 Uiso 1 1 calc R . . C2 C 0.39846(12) 0.6071(3) -0.08922(15) 0.0393(7) Uani 1 1 d . . . H2A H 0.4014 0.6999 -0.1136 0.047 Uiso 1 1 calc R . . C1 C 0.43817(13) 0.5922(3) -0.01112(16) 0.0448(7) Uani 1 1 d . . . H1A H 0.4683 0.6758 0.0186 0.054 Uiso 1 1 calc R . . loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_23 _atom_site_aniso_U_13 _atom_site_aniso_U_12 Si1 0.0243(4) 0.0289(4) 0.0259(4) 0.0014(3) 0.0161(3) -0.0001(3) F9 0.0430(9) 0.0433(9) 0.0370(8) -0.0059(7) 0.0299(7) -0.0028(7) C23 0.0286(13) 0.0282(14) 0.0336(14) 0.0093(12) 0.0209(12) 0.0036(11) F8 0.0301(8) 0.0467(9) 0.0428(8) 0.0041(7) 0.0253(7) -0.0022(6) C22 0.0272(13) 0.0319(14) 0.0237(13) 0.0010(11) 0.0155(11) 0.0004(10) C21 0.0248(12) 0.0226(13) 0.0259(13) 0.0030(10) 0.0148(11) 0.0029(10) C20 0.0290(14) 0.0458(17) 0.0513(17) -0.0002(14) 0.0278(14) -0.0003(12) F7 0.0464(10) 0.0685(11) 0.0409(9) -0.0202(8) 0.0267(8) -0.0270(8) F6 0.0332(8) 0.0508(10) 0.0379(9) -0.0024(7) 0.0159(7) -0.0145(7) C19 0.0266(14) 0.0308(14) 0.0309(14) 0.0023(12) 0.0123(12) -0.0048(11) F5 0.0508(9) 0.0467(9) 0.0285(8) -0.0097(7) 0.0208(7) -0.0119(7) C18 0.0484(16) 0.0351(15) 0.0371(15) 0.0014(12) 0.0335(14) 0.0062(13) C17 0.0256(13) 0.0204(13) 0.0294(13) 0.0070(10) 0.0172(11) 0.0054(10) C16 0.0272(13) 0.0296(14) 0.0295(14) 0.0005(11) 0.0194(12) 0.0029(11) F4 0.0524(10) 0.0540(10) 0.0569(10) -0.0093(8) 0.0452(9) -0.0134(8) F3 0.0700(11) 0.0610(11) 0.0512(10) -0.0106(8) 0.0496(10) -0.0056(9) C15 0.0302(13) 0.0275(14) 0.0308(13) 0.0034(11) 0.0212(12) 0.0026(11) C14 0.0351(14) 0.0279(14) 0.0246(13) 0.0001(11) 0.0147(12) -0.0021(11) C13 0.0265(13) 0.0227(13) 0.0278(13) 0.0052(10) 0.0178(11) 0.0071(10) F2 0.0699(12) 0.0618(11) 0.0417(9) -0.0213(8) 0.0373(9) -0.0179(9) C12 0.0317(15) 0.0476(18) 0.0346(15) 0.0058(13) 0.0167(13) 0.0139(12) C11 0.0323(14) 0.0332(15) 0.0347(15) 0.0011(12) 0.0218(12) -0.0016(11) C10 0.0443(16) 0.0370(16) 0.0299(14) -0.0072(12) 0.0226(13) -0.0035(13) C9 0.0270(13) 0.0271(14) 0.0276(13) 0.0041(11) 0.0167(12) 0.0022(10) C8 0.0322(14) 0.0296(15) 0.0385(15) 0.0031(12) 0.0256(13) 0.0018(11) C7 0.0467(17) 0.0409(17) 0.0302(15) 0.0064(12) 0.0235(14) 0.0019(13) C6 0.0335(14) 0.0349(15) 0.0314(14) -0.0011(12) 0.0192(12) -0.0051(12) C5 0.0323(14) 0.0326(15) 0.0376(14) 0.0038(12) 0.0234(12) -0.0008(11) C4 0.0478(18) 0.062(2) 0.0412(16) 0.0254(15) 0.0309(15) 0.0213(15) C25 0.0429(16) 0.0385(16) 0.0282(14) -0.0004(12) 0.0179(13) -0.0068(13) C3 0.0409(16) 0.0564(19) 0.0409(16) 0.0176(14) 0.0305(14) 0.0141(13) C2 0.0539(18) 0.0311(16) 0.0441(17) 0.0054(12) 0.0362(15) 0.0010(13) C1 0.0532(18) 0.0338(16) 0.0460(17) -0.0059(13) 0.0304(16) -0.0137(13) _geom_special_details ; All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes. ; loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance _geom_bond_site_symmetry_2 _geom_bond_publ_flag Si1 C16 1.851(2) . ? Si1 C22 1.866(2) . ? Si1 C9 1.875(2) . ? Si1 C21 1.876(2) . ? F9 C15 1.349(3) . ? C23 F8 1.342(3) . ? C23 C17 1.382(3) . ? C23 C19 1.389(4) . ? C22 C5 1.382(3) . ? C22 C3 1.396(3) . ? C21 C15 1.375(3) . ? C21 C17 1.416(3) . ? C20 C5 1.381(4) . ? C20 C12 1.381(4) . ? C20 H20A 0.9500 . ? F7 C6 1.346(3) . ? F6 C19 1.342(3) . ? C19 C14 1.364(4) . ? F5 C14 1.345(3) . ? C18 F3 1.345(3) . ? C18 C10 1.364(4) . ? C18 C8 1.378(4) . ? C17 C13 1.501(3) . ? C16 C11 1.391(3) . ? C16 C25 1.399(3) . ? F4 C8 1.337(3) . ? C15 C14 1.373(3) . ? C13 C8 1.387(3) . ? C13 C9 1.411(3) . ? F2 C10 1.344(3) . ? C12 C4 1.372(4) . ? C12 H12A 0.9500 . ? C11 C7 1.386(3) . ? C11 H11A 0.9500 . ? C10 C6 1.374(4) . ? C9 C6 1.373(3) . ? C7 C2 1.374(4) . ? C7 H7A 0.9500 . ? C5 H5A 0.9500 . ? C4 C3 1.376(4) . ? C4 H4A 0.9500 . ? C25 C1 1.380(4) . ? C25 H25A 0.9500 . ? C3 H3A 0.9500 . ? C2 C1 1.371(4) . ? C2 H2A 0.9500 . ? C1 H1A 0.9500 . ? loop_ _geom_angle_atom_site_label_1 _geom_angle_atom_site_label_2 _geom_angle_atom_site_label_3 _geom_angle _geom_angle_site_symmetry_1 _geom_angle_site_symmetry_3 _geom_angle_publ_flag C16 Si1 C22 112.44(10) . . ? C16 Si1 C9 116.63(11) . . ? C22 Si1 C9 109.25(10) . . ? C16 Si1 C21 114.44(10) . . ? C22 Si1 C21 113.06(10) . . ? C9 Si1 C21 89.01(10) . . ? F8 C23 C17 123.7(2) . . ? F8 C23 C19 115.6(2) . . ? C17 C23 C19 120.7(2) . . ? C5 C22 C3 117.7(2) . . ? C5 C22 Si1 121.79(18) . . ? C3 C22 Si1 120.50(18) . . ? C15 C21 C17 119.4(2) . . ? C15 C21 Si1 128.73(18) . . ? C17 C21 Si1 111.85(17) . . ? C5 C20 C12 120.1(2) . . ? C5 C20 H20A 120.0 . . ? C12 C20 H20A 120.0 . . ? F6 C19 C14 120.3(2) . . ? F6 C19 C23 118.6(2) . . ? C14 C19 C23 121.1(2) . . ? F3 C18 C10 119.5(2) . . ? F3 C18 C8 119.2(2) . . ? C10 C18 C8 121.3(2) . . ? C23 C17 C21 118.0(2) . . ? C23 C17 C13 128.6(2) . . ? C21 C17 C13 113.3(2) . . ? C11 C16 C25 117.4(2) . . ? C11 C16 Si1 122.94(18) . . ? C25 C16 Si1 119.62(18) . . ? F9 C15 C14 117.8(2) . . ? F9 C15 C21 120.2(2) . . ? C14 C15 C21 122.0(2) . . ? F5 C14 C19 119.9(2) . . ? F5 C14 C15 121.3(2) . . ? C19 C14 C15 118.7(2) . . ? C8 C13 C9 117.7(2) . . ? C8 C13 C17 128.7(2) . . ? C9 C13 C17 113.6(2) . . ? C4 C12 C20 119.4(2) . . ? C4 C12 H12A 120.3 . . ? C20 C12 H12A 120.3 . . ? C7 C11 C16 121.2(2) . . ? C7 C11 H11A 119.4 . . ? C16 C11 H11A 119.4 . . ? F2 C10 C18 120.2(2) . . ? F2 C10 C6 121.3(2) . . ? C18 C10 C6 118.5(2) . . ? C6 C9 C13 119.7(2) . . ? C6 C9 Si1 128.18(19) . . ? C13 C9 Si1 111.78(17) . . ? F4 C8 C18 116.2(2) . . ? F4 C8 C13 122.9(2) . . ? C18 C8 C13 120.9(2) . . ? C2 C7 C11 120.1(2) . . ? C2 C7 H7A 119.9 . . ? C11 C7 H7A 119.9 . . ? F7 C6 C9 119.8(2) . . ? F7 C6 C10 118.3(2) . . ? C9 C6 C10 121.9(2) . . ? C20 C5 C22 121.3(2) . . ? C20 C5 H5A 119.3 . . ? C22 C5 H5A 119.3 . . ? C12 C4 C3 120.5(3) . . ? C12 C4 H4A 119.8 . . ? C3 C4 H4A 119.8 . . ? C1 C25 C16 120.9(2) . . ? C1 C25 H25A 119.5 . . ? C16 C25 H25A 119.5 . . ? C4 C3 C22 121.0(2) . . ? C4 C3 H3A 119.5 . . ? C22 C3 H3A 119.5 . . ? C1 C2 C7 119.8(2) . . ? C1 C2 H2A 120.1 . . ? C7 C2 H2A 120.1 . . ? C2 C1 C25 120.5(3) . . ? C2 C1 H1A 119.7 . . ? C25 C1 H1A 119.7 . . ? loop_ _geom_torsion_atom_site_label_1 _geom_torsion_atom_site_label_2 _geom_torsion_atom_site_label_3 _geom_torsion_atom_site_label_4 _geom_torsion _geom_torsion_site_symmetry_1 _geom_torsion_site_symmetry_2 _geom_torsion_site_symmetry_3 _geom_torsion_site_symmetry_4 _geom_torsion_publ_flag C16 Si1 C22 C5 -9.6(2) . . . . ? C9 Si1 C22 C5 -140.7(2) . . . . ? C21 Si1 C22 C5 121.9(2) . . . . ? C16 Si1 C22 C3 171.0(2) . . . . ? C9 Si1 C22 C3 39.8(2) . . . . ? C21 Si1 C22 C3 -57.6(2) . . . . ? C16 Si1 C21 C15 57.1(2) . . . . ? C22 Si1 C21 C15 -73.4(2) . . . . ? C9 Si1 C21 C15 176.1(2) . . . . ? C16 Si1 C21 C17 -120.91(17) . . . . ? C22 Si1 C21 C17 108.61(17) . . . . ? C9 Si1 C21 C17 -1.94(17) . . . . ? F8 C23 C19 F6 -2.0(3) . . . . ? C17 C23 C19 F6 179.4(2) . . . . ? F8 C23 C19 C14 178.4(2) . . . . ? C17 C23 C19 C14 -0.1(4) . . . . ? F8 C23 C17 C21 -176.8(2) . . . . ? C19 C23 C17 C21 1.7(3) . . . . ? F8 C23 C17 C13 1.2(4) . . . . ? C19 C23 C17 C13 179.7(2) . . . . ? C15 C21 C17 C23 -1.7(3) . . . . ? Si1 C21 C17 C23 176.51(17) . . . . ? C15 C21 C17 C13 -180.0(2) . . . . ? Si1 C21 C17 C13 -1.8(2) . . . . ? C22 Si1 C16 C11 119.3(2) . . . . ? C9 Si1 C16 C11 -113.4(2) . . . . ? C21 Si1 C16 C11 -11.5(2) . . . . ? C22 Si1 C16 C25 -60.4(2) . . . . ? C9 Si1 C16 C25 66.9(2) . . . . ? C21 Si1 C16 C25 168.85(19) . . . . ? C17 C21 C15 F9 179.84(19) . . . . ? Si1 C21 C15 F9 2.0(3) . . . . ? C17 C21 C15 C14 0.2(3) . . . . ? Si1 C21 C15 C14 -177.70(18) . . . . ? F6 C19 C14 F5 0.1(4) . . . . ? C23 C19 C14 F5 179.6(2) . . . . ? F6 C19 C14 C15 179.1(2) . . . . ? C23 C19 C14 C15 -1.4(4) . . . . ? F9 C15 C14 F5 0.7(3) . . . . ? C21 C15 C14 F5 -179.6(2) . . . . ? F9 C15 C14 C19 -178.3(2) . . . . ? C21 C15 C14 C19 1.4(4) . . . . ? C23 C17 C13 C8 10.5(4) . . . . ? C21 C17 C13 C8 -171.5(2) . . . . ? C23 C17 C13 C9 -171.9(2) . . . . ? C21 C17 C13 C9 6.1(3) . . . . ? C5 C20 C12 C4 0.0(4) . . . . ? C25 C16 C11 C7 -0.4(4) . . . . ? Si1 C16 C11 C7 179.94(19) . . . . ? F3 C18 C10 F2 -0.8(4) . . . . ? C8 C18 C10 F2 178.7(2) . . . . ? F3 C18 C10 C6 179.3(2) . . . . ? C8 C18 C10 C6 -1.2(4) . . . . ? C8 C13 C9 C6 -3.1(3) . . . . ? C17 C13 C9 C6 179.0(2) . . . . ? C8 C13 C9 Si1 170.38(17) . . . . ? C17 C13 C9 Si1 -7.5(2) . . . . ? C16 Si1 C9 C6 -64.8(2) . . . . ? C22 Si1 C9 C6 64.1(2) . . . . ? C21 Si1 C9 C6 178.2(2) . . . . ? C16 Si1 C9 C13 122.39(17) . . . . ? C22 Si1 C9 C13 -108.76(17) . . . . ? C21 Si1 C9 C13 5.38(17) . . . . ? F3 C18 C8 F4 -2.7(3) . . . . ? C10 C18 C8 F4 177.8(2) . . . . ? F3 C18 C8 C13 178.9(2) . . . . ? C10 C18 C8 C13 -0.7(4) . . . . ? C9 C13 C8 F4 -175.5(2) . . . . ? C17 C13 C8 F4 2.0(4) . . . . ? C9 C13 C8 C18 2.8(3) . . . . ? C17 C13 C8 C18 -179.7(2) . . . . ? C16 C11 C7 C2 0.6(4) . . . . ? C13 C9 C6 F7 -178.0(2) . . . . ? Si1 C9 C6 F7 9.6(4) . . . . ? C13 C9 C6 C10 1.4(4) . . . . ? Si1 C9 C6 C10 -171.0(2) . . . . ? F2 C10 C6 F7 0.3(4) . . . . ? C18 C10 C6 F7 -179.8(2) . . . . ? F2 C10 C6 C9 -179.1(2) . . . . ? C18 C10 C6 C9 0.8(4) . . . . ? C12 C20 C5 C22 -0.1(4) . . . . ? C3 C22 C5 C20 0.4(4) . . . . ? Si1 C22 C5 C20 -179.0(2) . . . . ? C20 C12 C4 C3 -0.3(4) . . . . ? C11 C16 C25 C1 0.4(4) . . . . ? Si1 C16 C25 C1 -179.9(2) . . . . ? C12 C4 C3 C22 0.6(5) . . . . ? C5 C22 C3 C4 -0.7(4) . . . . ? Si1 C22 C3 C4 178.8(2) . . . . ? C11 C7 C2 C1 -0.7(4) . . . . ? C7 C2 C1 C25 0.8(4) . . . . ? C16 C25 C1 C2 -0.6(4) . . . . ? _diffrn_measured_fraction_theta_max 0.999 _diffrn_reflns_theta_full 23.25 _diffrn_measured_fraction_theta_full 0.999 _refine_diff_density_max 0.237 _refine_diff_density_min -0.250 _refine_diff_density_rms 0.043