1 Supplementary Information I. Experimental procedure: Metathesis reaction of TDDA with syn-tricyclooctadiene: A suspension of TDDA (100 mg, 0.28 mmol), syn-tricyclooctadiene (300 mg, 2.88 mmol) and naphthalene (20 mg, 0.15 mmol) in benzene (200 ml) was agitated with a stream of argon and irradiated with a 15 W low-pressure mercury lamp in a quartz photoreactor. After 24 h of irradiation the solvent was evaporated and the solid residue was dissolved in dichloromethane and passed through a short column of silical gel. For separation of the products a semipreparative HPLC silica gel column and a mixture of heptane/dichloromethane 95/5 was used. The Moebius C2 compound could only be isolated after removing the cyclohexadiene Cs isomer (which has a very similar retention time) by adding a solution of tetracyanoethylene (TCNE) (3 mg, 0.023 mmol) in 2 ml of dichloromethane to the corresponding fraction. Immediate filtration over a short silica column retained the Diels-Alder adduct of the cyclohexadiene Cs compound and the excess of TCNE and enabled the separation of the two remaining fully conjugated products. Möbius C2: H H 13’ 12’ H H 11’ 14’ H 3’ 2’ 4’ 1’ 10a’ 9a’ H 10’ 10b’ 5’ H 6’ H H H H H 8 5 9b 10b 9’ 9b’ 8’ 7’ H 7 6H 9 H H 9a 1 2 H H 11 10 10a 4 H 14 12 13 H H H H 3 H H NMR (500 MHz, CDCl3/TMS): = 7.709 (ddd, 3J1-H, 2-H = 7.5 Hz, 4J1-H, 3-H = 1.3, 5J1-H, 4-H = 0.5, 2H, 1-H); 7.516* (m, 2H, 8-H); 7.209* (m, 2H, 4-H); 7.201* (m, 2H, 5-H); 7.184 (ddd, 3 J2-H, 1-H = 7.5 Hz, 4J2-H, 4-H = 1.3, 2H, 2-H); 7.098 (ddd, 3J3-H, 2-H = 7.5 Hz, 3J3-H, 4-H = 7.5, 4 J3-H, 1-H = 1.3, 2H, 3-H); 7.009 (ddd, 3J7-H, 6-H = 7.4 Hz, 3J7-H, 8-H = 7.4, 4J7-H, 5-H = 2.0, 2H, 7HA); 7.003 (ddd, 3J6-H, 7-H = 7.4 Hz, 3J6-H, 7-H = 7.4, 4J6-H, 8-H, = 2.0, 2H, 6-HB); 6.486 (dd, 3 J11-H, 12-H = 12.5 Hz, 4J11-H, 13-H = 1.5, 2H, 11-H); 6.118 (dd, 3J12-H, 11-H = 12.5 Hz, 3J12-H, 13-H = 11.9, 2H, 12-H); 5.940 (dd, 3J14-H, 13-H = 4.7 Hz, 4J14-H, 14’-H = 1.9, 2H, 14-H); 5.690 (dddd, 3 J13-H, 12-H = 11.9 Hz, 3J13-H, 14-H = 4.7, 4J13-H, 14’-H = 1.9, nJ = 0.9, 2H, 13-H). *chemical shifts were calculated from HSQC spectra. 13 C NMR (125.8 MHz, CDCl3/TMS): = 140.67 (10-C), 139.92 (9-C), 139.36 (10b-C), 138.93 (9a-C), 138.34 (9b-C), 135.91 (10a-C), 128.09 (1-C), 127.79 (12-C), 127.04 (14-C), 126.42 (6-C), 126.27 (8-C), 126.15 (4-C), 125.97 (3-C), 125.41 (2-C), 125.24 (7-C), 124.89 (11-C), 122.05 (5-C). UV/Vis (CH2Cl2): max () = 253 (26231), 312 (17251), 400 (broad, 2946) nm. MS (70 eV): m/z (%): 456 (100) [M+]. 1 2 Hückel Cs: H H 13’ 12’ H 11’ 14’ H H H 6’ 7’ H H 5’ 8’ H 10b’ H 9b’ 10’ 10a’ 4’ H 5 9b 10b 9 H H 2’ H 3’ H 8 9’ 9a’ 1’ 7 6H H 10a 4 H H 11 12 13 10 9a 1 dihedral 103° H H 14 H 3 H 2 H H NMR (500 MHz, CDCl3/TMS): = 7.733 (ddd, 3J8-H, 7-H = 7.5 Hz, 4J8-H, 6-H = 1.3, 5J8-H, 5-H = 0.6, 2H, 8-H); 7.609 (ddd, 3J1-H, 2-H = 7.3 Hz, 4J1-H, 3-H = 1.5, 5J1-H, 4-H = 0.6, 2H, 1-H); 7.332 (ddd, 3J5-H, 6-H = 7.3 Hz, 4J5-H, 7-H = 1.5 Hz, 2H, 5-H); 7.114 (m, 2H, 4-H); 7.087 (ddd, 3 J7-H, 8-H = 7.5 Hz, 3J7-H, 6-H = 7.3, 4J7-H, 5H = 1.5, 2H, 7-H); 7.043 (ddd, 3J6-H, 7-H = 7.3 Hz, 3J6-H, 4 3 3 4 5-H = 7.5, J6-H, 8-H = 1.3, 2H, 6-H); 7.005 (ddd, J2-H, 1-H = 7.3 Hz, J2-H, 3-H = 7.3, J2-H, 4-H = 1.5, 2H, 2-H); 6.978 (ddd, 3J3-H, 2-H = 7.3 Hz, 3J3-H, 4-H = 7.5, 4J3-H, 1-H, = 1.5, 2H, 3-H); 6.624 (dd, 3J12-H, 11-H = 11.0 Hz, 3J12-H, 13-H = 10.8, 2H, 12-H); 6.260 (dd, 3J11-H, 12-H = 11.0 Hz, 4 J11-H, 13-H = 1.3, 2H, 11-H); 6.238 (ddd, 3J14-H, 14’-H = 11.0 Hz, 3J14-H, 13-H = 2.4, 4J14-H, 13’-H = 1.1, 2H, 14-H); 5.875 (dddd, 3J13-H, 12-H = 10.8 Hz, 3J13-H, 14-H = 2.4, 4J13-H, 14’-H = 1.1, 4J13-H, 11-H = 0.9, 2H, 13-H). 13 C NMR (125.8 MHz, CDCl3/TMS): = 139.76 (9-C)*, 138.19 (10-C)*, 137.93 (10a-C)*, 137.65 (9b-C)*, 137.47 (9a-C)*, 136.31 (10b-C)*, 131.52 (13-C), 129.83 (14-C), 128.45 (8C), 128.02 (12-C), 127.94 (1-C), 126.44 (3-C), 126.06 (6-C), 125.41 (5-C), 125.23 (7-C), 124.60 (2-C), 123.29 (4-C), 122.00 (11). *assignement according to a CSGT B3LYP/6-31G* calculation. UV/Vis (CH2Cl2): max () = 259 (17027), 299 (16334) nm. MS (70 eV): m/z (%): 456 (100) [M+]. 1 UV spectra: 30 000 max = 253 nm = 26 231 Möbius C2 20 000 Hückel Cs max = 259 nm = 17 027 max = 312 nm = 17 251 max = 299 nm = 16 334 10 000 max = 400 nm = 2 946 250 300 350 400 450 500 550 [nm] 3 X-ray data: Möbius C2: 4 data_oeda_n6a 5 # SUBMISSION DETAILS data_oeda_n6a _publ_contact_author ; Herges, Rainer **** type your address here and complete the following ***** ; Institut fuer Organische Chemie Universitaet Kiel Otto-Hahn-Platz 4 24118 Kiel Germany _publ_contact_author_phone +49 431 880 2440 _publ_contact_author_fax +49 431 880 1558 _publ_contact_author_email rherges@oc.uni-kiel.de _publ_requested_journal Nature _publ_requested_coeditor_name Dariush Ajami _publ_contact_letter ; Please consider this CIF submission for publication in ***** please complete ****** ; #========================================================================== ==== # TITLE AND AUTHOR LIST _publ_section_title ; **** Synthesis of a Moebius aromatic hydrocarbon **** ; loop_ _publ_author_name _publ_author_address ; 'Ajami, Dariush' Institut fuer Organische Chemie Universitaet Kiel Otto-Hahn-Platz 4 24118 Kiel Germany ; ; 'Oeckler, Oliver' Max-Planck-Institut f\"ur Festk\"orperforschung Heisenbergstra\&se 1 70569 Stuttgart Bundesrepublik Deutschland ; ; 'Simon, Arndt' Max-Planck-Institut f\"ur Festk\"orperforschung Heisenbergstra\&se 1 70569 Stuttgart Bundesrepublik Deutschland ; ; ; 'Herges, Rainer' Institut fuer Organische Chemie Universitaet Kiel Otto-Hahn-Platz 4 24118 Kiel Germany 6 ***** complete author list !!! *********** #========================================================================== ==== _audit_creation_method _chemical_name_systematic ; ? ; _chemical_name_common _chemical_melting_point _chemical_formula_moiety _chemical_formula_sum 'C36 H24' _chemical_formula_weight SHELXL-97 TDDA-TCOD-Moebius-C2-atEcZcEt ? ? 456.55 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' _symmetry_cell_setting _symmetry_space_group_name_H-M monoclinic 'C2/c' 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 _cell_length_b _cell_length_c _cell_angle_alpha _cell_angle_beta _cell_angle_gamma _cell_volume _cell_formula_units_Z _cell_measurement_temperature _cell_measurement_reflns_used _cell_measurement_theta_min _cell_measurement_theta_max 16.280(2) 10.9590(10) 14.373(2) 90.00 110.41(2) 90.00 2403.3(5) 4 173(2) 9482 2.2 32 _exptl_crystal_description _exptl_crystal_colour _exptl_crystal_size_max _exptl_crystal_size_mid _exptl_crystal_size_min _exptl_crystal_density_meas _exptl_crystal_density_diffrn 'irregular polyhedron' 'yellow' 0.55 0.35 0.10 ? 1.262 7 _exptl_crystal_density_method _exptl_crystal_F_000 _exptl_absorpt_coefficient_mu _exptl_absorpt_correction_type _exptl_absorpt_correction_T_min _exptl_absorpt_correction_T_max _exptl_absorpt_process_details 'not measured' 960 0.071 multi-scan 0.74 0.93 ? _exptl_special_details ; ? ; _diffrn_ambient_temperature 173(2) _diffrn_measurement_device '2-circle goniometer' _diffrn_measurement_device_type 'STOE IPDS 2' _diffrn_detector 'image plate (34 cm diameter)' _diffrn_detector_type 'STOE' _diffrn_detector_area_resol_mean 6.67 _diffrn_source 'sealed X-ray tube, 12 x 0.4 mm long-fine focus' _diffrn_source_voltage 50 _diffrn_source_current 55 _diffrn_source_power 2.75 _diffrn_radiation_type 'Mo K\a' _diffrn_radiation_wavelength 0.71073 _diffrn_radiation_monochromator 'plane graphite' _diffrn_radiation_polarisn_norm 0 _diffrn_radiation_collimation '0.5 mm diameter, multiple pinhole' _diffrn_measurement_method 'rotation method' _diffrn_measurement_details ; 180 frames, 1 deg per frame ; _diffrn_standards_number _diffrn_standards_interval_count _diffrn_standards_interval_time _diffrn_standards_decay_% _diffrn_reflns_number _diffrn_reflns_av_R_equivalents _diffrn_reflns_av_sigmaI/netI _diffrn_reflns_limit_h_min _diffrn_reflns_limit_h_max _diffrn_reflns_limit_k_min _diffrn_reflns_limit_k_max _diffrn_reflns_limit_l_min _diffrn_reflns_limit_l_max _diffrn_reflns_theta_min _diffrn_reflns_theta_max _reflns_number_total _reflns_number_gt _reflns_threshold_expression _computing_data_collection _computing_cell_refinement _computing_data_reduction _computing_structure_solution _computing_structure_refinement _computing_molecular_graphics _computing_publication_material 0 0 0 0 28913 0.0813 0.0289 -21 21 -14 14 -18 18 2.29 27.50 2766 2356 >2sigma(I) 'STOE X-AREA' 'STOE X-AREA' 'STOE X-RED' 'SHELXS-97 (Sheldrick, 1990)' 'SHELXL-97 (Sheldrick, 1997)' ? ? _refine_special_details ; Refinement of F^2^ against ALL reflections. The weighted R-factor wR and 8 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 Rfactors 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^)+(0.0666P)^2^+0.5792P] where P=(Fo^2^+2Fc^2^)/3' _atom_sites_solution_primary direct _atom_sites_solution_secondary difmap _atom_sites_solution_hydrogens difmap _refine_ls_hydrogen_treatment refall _refine_ls_extinction_method SHELXL _refine_ls_extinction_coef 0.0159(15) _refine_ls_extinction_expression 'Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^' _refine_ls_number_reflns 2766 _refine_ls_number_parameters 212 _refine_ls_number_restraints 0 _refine_ls_R_factor_all 0.0465 _refine_ls_R_factor_gt 0.0400 _refine_ls_wR_factor_ref 0.1132 _refine_ls_wR_factor_gt 0.1097 _refine_ls_goodness_of_fit_ref 1.046 _refine_ls_restrained_S_all 1.046 _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 C1 C 0.48559(10) -0.30404(12) 0.20056(12) 0.0580(4) Uani 1 1 d . . . C2 C 0.46442(9) -0.21045(12) 0.12430(11) 0.0499(3) Uani 1 1 d . . . C3 C 0.42689(8) -0.09937(11) 0.11694(9) 0.0423(3) Uani 1 1 d . . . C4 C 0.39481(7) -0.03693(10) 0.18639(8) 0.0350(3) Uani 1 1 d . . . C5 C 0.37108(7) 0.08223(9) 0.17682(8) 0.0317(2) Uani 1 1 d . . . C6 C 0.37090(7) 0.16135(9) 0.09285(8) 0.0313(2) Uani 1 1 d . . . C7 C 0.32757(7) 0.13280(10) -0.00709(8) 0.0352(3) Uani 1 1 d . . . C8 C 0.32570(8) 0.21534(11) -0.08069(8) 0.0388(3) Uani 1 1 d . . . C9 C 0.36605(8) 0.32770(11) -0.05554(9) 0.0407(3) Uani 1 1 d . . . C10 C 0.41004(8) 0.35788(11) 0.04338(8) 0.0374(3) Uani 1 1 d . . . C11 C 0.41341(7) 0.27510(9) 0.11815(8) 0.0316(2) Uani 1 1 d . . . C12 C 0.45600(7) 0.29525(9) 0.22685(8) 0.0312(2) Uani 1 1 d . . . C13 C 0.39376(7) 0.26784(10) 0.27931(8) 0.0327(2) Uani 1 1 d . . . C14 C 0.37394(8) 0.34363(12) 0.34601(9) 0.0414(3) Uani 1 1 d . . . C15 C 0.31301(9) 0.30669(14) 0.38836(9) 0.0493(3) Uani 1 1 d . . . C16 C 0.27384(9) 0.19328(14) 0.36632(9) 0.0483(3) Uani 1 1 d . . . 9 C17 C 0.29382(8) 0.11562(12) 0.30075(9) 0.0399(3) Uani 1 1 d . . . C18 C 0.35234(7) 0.15308(10) 0.25525(8) 0.0328(2) Uani 1 1 d . . . H1 H 0.4809(13) -0.3912(18) 0.1713(14) 0.079(6) Uiso 1 1 d . . . H2 H 0.4793(11) -0.2349(15) 0.0616(13) 0.061(5) Uiso 1 1 d . . . H3 H 0.4215(10) -0.0520(14) 0.0528(11) 0.046(4) Uiso 1 1 d . . . H4 H 0.3980(9) -0.0820(12) 0.2533(10) 0.034(3) Uiso 1 1 d . . . H7 H 0.2952(9) 0.0556(14) -0.0248(10) 0.041(3) Uiso 1 1 d . . . H8 H 0.2955(9) 0.1937(13) -0.1520(11) 0.043(4) Uiso 1 1 d . . . H9 H 0.3635(11) 0.3871(14) -0.1083(12) 0.052(4) Uiso 1 1 d . . . H10 H 0.4385(10) 0.4375(15) 0.0609(11) 0.046(4) Uiso 1 1 d . . . H14 H 0.4020(10) 0.4222(14) 0.3622(11) 0.046(4) Uiso 1 1 d . . . H15 H 0.2981(11) 0.3625(15) 0.4330(12) 0.056(4) Uiso 1 1 d . . . H16 H 0.2285(12) 0.1679(16) 0.3957(13) 0.061(4) Uiso 1 1 d . . . H17 H 0.2657(10) 0.0352(15) 0.2845(11) 0.047(4) Uiso 1 1 d . . . 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 C1 0.0495(8) 0.0286(6) 0.0810(10) -0.0107(6) 0.0041(7) 0.0027(5) C2 0.0421(7) 0.0447(7) 0.0530(8) -0.0153(6) 0.0042(6) 0.0040(5) C3 0.0382(6) 0.0404(6) 0.0412(6) -0.0062(5) 0.0051(5) 0.0025(5) C4 0.0318(5) 0.0297(5) 0.0385(6) 0.0007(4) 0.0059(4) -0.0003(4) C5 0.0280(5) 0.0304(5) 0.0321(5) 0.0011(4) 0.0048(4) 0.0004(4) C6 0.0299(5) 0.0298(5) 0.0310(5) -0.0005(4) 0.0064(4) 0.0027(4) C7 0.0331(5) 0.0335(5) 0.0341(6) -0.0041(4) 0.0056(4) 0.0008(4) C8 0.0378(6) 0.0439(6) 0.0292(5) -0.0022(4) 0.0046(4) 0.0033(5) C9 0.0434(6) 0.0424(6) 0.0319(6) 0.0070(5) 0.0077(5) 0.0015(5) C10 0.0394(6) 0.0334(5) 0.0342(6) 0.0034(4) 0.0061(5) -0.0010(4) C11 0.0315(5) 0.0295(5) 0.0292(5) 0.0000(4) 0.0049(4) 0.0021(4) C12 0.0367(5) 0.0231(4) 0.0290(5) 0.0005(4) 0.0055(4) 0.0023(4) C13 0.0326(5) 0.0330(5) 0.0271(5) 0.0030(4) 0.0036(4) 0.0088(4) C14 0.0428(6) 0.0420(6) 0.0336(6) -0.0017(5) 0.0063(5) 0.0129(5) C15 0.0503(7) 0.0626(8) 0.0337(6) 0.0002(5) 0.0130(5) 0.0207(6) C16 0.0439(7) 0.0651(8) 0.0371(6) 0.0129(6) 0.0156(5) 0.0137(6) C17 0.0371(6) 0.0458(6) 0.0343(6) 0.0123(5) 0.0092(5) 0.0070(5) C18 0.0307(5) 0.0339(5) 0.0293(5) 0.0063(4) 0.0050(4) 0.0074(4) _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 C1 C1 1.332(3) 2_655 ? C1 C2 1.452(2) . ? C1 H1 1.04(2) . ? C2 C3 1.3496(18) . ? 10 C2 H2 1.047(17) . ? C3 C4 1.4494(17) . ? C3 H3 1.034(15) . ? C4 C5 1.3552(15) . ? C4 H4 1.067(13) . ? C5 C6 1.4853(14) . ? C5 C18 1.4854(15) . ? C6 C7 1.3971(15) . ? C6 C11 1.4106(14) . ? C7 C8 1.3841(17) . ? C7 H7 0.983(15) . ? C8 C9 1.3831(17) . ? C8 H8 0.998(15) . ? C9 C10 1.3906(16) . ? C9 H9 0.989(15) . ? C10 C11 1.3927(15) . ? C10 H10 0.979(16) . ? C11 C12 1.4883(14) . ? C12 C12 1.353(2) 2_655 ? C12 C13 1.4894(15) . ? C13 C14 1.3887(15) . ? C13 C18 1.4119(16) . ? C14 C15 1.393(2) . ? C14 H14 0.964(16) . ? C15 C16 1.382(2) . ? C15 H15 0.977(16) . ? C16 C17 1.3899(19) . ? C16 H16 1.009(17) . ? C17 C18 1.3923(16) . ? C17 H17 0.983(16) . ? 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 C1 C1 C2 135.06(8) 2_655 . ? C1 C1 H1 112.5(10) 2_655 . ? C2 C1 H1 112.3(10) . . ? C3 C2 C1 132.69(14) . . ? C3 C2 H2 113.4(9) . . ? C1 C2 H2 113.9(9) . . ? C2 C3 C4 129.33(13) . . ? C2 C3 H3 114.7(8) . . ? C4 C3 H3 116.0(8) . . ? C5 C4 C3 122.92(11) . . ? C5 C4 H4 117.4(7) . . ? C3 C4 H4 119.1(7) . . ? C4 C5 C6 124.38(10) . . ? C4 C5 C18 123.60(10) . . ? C6 C5 C18 111.64(8) . . ? C7 C6 C11 119.30(10) . . ? C7 C6 C5 124.19(10) . . ? C11 C6 C5 116.40(9) . . ? C8 C7 C6 120.54(10) . . ? C8 C7 H7 119.9(8) . . ? C6 C7 H7 119.5(8) . . ? C9 C8 C7 120.01(10) . . ? C9 C8 H8 119.9(8) . . ? C7 C8 H8 120.1(8) . . ? 11 C8 C9 C10 120.48(11) . . ? C8 C9 H9 119.8(9) . . ? C10 C9 H9 119.7(9) . . ? C9 C10 C11 120.12(11) . . ? C9 C10 H10 120.2(8) . . ? C11 C10 H10 119.7(8) . . ? C10 C11 C6 119.53(10) . . ? C10 C11 C12 126.30(10) . . ? C6 C11 C12 114.13(9) . . ? C12 C12 C11 122.82(12) 2_655 . ? C12 C12 C13 122.80(12) 2_655 . ? C11 C12 C13 110.57(9) . . ? C14 C13 C18 119.72(11) . . ? C14 C13 C12 126.28(11) . . ? C18 C13 C12 114.00(9) . . ? C13 C14 C15 120.01(12) . . ? C13 C14 H14 119.8(9) . . ? C15 C14 H14 120.2(9) . . ? C16 C15 C14 120.21(12) . . ? C16 C15 H15 120.9(10) . . ? C14 C15 H15 118.9(10) . . ? C15 C16 C17 120.50(12) . . ? C15 C16 H16 119.9(10) . . ? C17 C16 H16 119.5(10) . . ? C16 C17 C18 119.88(12) . . ? C16 C17 H17 120.7(9) . . ? C18 C17 H17 119.4(9) . . ? C17 C18 C13 119.62(10) . . ? C17 C18 C5 123.89(10) . . ? C13 C18 C5 116.40(9) . . ? 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 C1 C1 C2 C3 -37.0(4) 2_655 . . . ? C1 C2 C3 C4 0.0(2) . . . . ? C2 C3 C4 C5 169.29(13) . . . . ? C3 C4 C5 C6 2.95(17) . . . . ? C3 C4 C5 C18 -169.43(10) . . . . ? C4 C5 C6 C7 53.63(16) . . . . ? C18 C5 C6 C7 -133.20(11) . . . . ? C4 C5 C6 C11 -130.23(11) . . . . ? C18 C5 C6 C11 42.94(12) . . . . ? C11 C6 C7 C8 -0.45(16) . . . . ? C5 C6 C7 C8 175.59(10) . . . . ? C6 C7 C8 C9 -0.75(17) . . . . ? C7 C8 C9 C10 1.15(18) . . . . ? C8 C9 C10 C11 -0.33(18) . . . . ? C9 C10 C11 C6 -0.87(17) . . . . ? C9 C10 C11 C12 -178.52(11) . . . . ? C7 C6 C11 C10 1.25(15) . . . . ? C5 C6 C11 C10 -175.09(10) . . . . ? C7 C6 C11 C12 179.17(9) . . . . ? C5 C6 C11 C12 2.84(13) . . . . ? C10 C11 C12 C12 -73.58(12) . . . 2_655 ? 12 C6 C11 C12 C12 108.66(9) . . . 2_655 ? C10 C11 C12 C13 127.88(11) . . . . ? C6 C11 C12 C13 -49.88(12) . . . . ? C12 C12 C13 C14 72.93(12) 2_655 . . . ? C11 C12 C13 C14 -128.53(11) . . . . ? C12 C12 C13 C18 -107.70(9) 2_655 . . . ? C11 C12 C13 C18 50.84(11) . . . . ? C18 C13 C14 C15 -0.43(16) . . . . ? C12 C13 C14 C15 178.91(11) . . . . ? C13 C14 C15 C16 1.76(18) . . . . ? C14 C15 C16 C17 -0.89(19) . . . . ? C15 C16 C17 C18 -1.33(18) . . . . ? C16 C17 C18 C13 2.64(16) . . . . ? C16 C17 C18 C5 -173.63(10) . . . . ? C14 C13 C18 C17 -1.77(15) . . . . ? C12 C13 C18 C17 178.82(9) . . . . ? C14 C13 C18 C5 174.78(9) . . . . ? C12 C13 C18 C5 -4.63(13) . . . . ? C4 C5 C18 C17 -52.30(15) . . . . ? C6 C5 C18 C17 134.46(11) . . . . ? C4 C5 C18 C13 131.32(11) . . . . ? C6 C5 C18 C13 -41.92(12) . . . . ? _diffrn_measured_fraction_theta_max _diffrn_reflns_theta_full _diffrn_measured_fraction_theta_full _refine_diff_density_max 0.249 _refine_diff_density_min -0.216 _refine_diff_density_rms 0.054 0.999 27.50 0.999