#------------------------------------------------------------------------------ #$Date: 2013-12-28 13:58:47 +0000 (Sat, 28 Dec 2013) $ #$Revision: 91933 $ #$URL: svn://www.crystallography.net/cod/cif/2/01/19/2011904.cif $ #------------------------------------------------------------------------------ # # This file is available in the Crystallography Open Database (COD), # http://www.crystallography.net/. The original data for this entry # were provided by IUCr Journals, http://journals.iucr.org/. # # The file may be used within the scientific community so long as # proper attribution is given to the journal article from which the # data were obtained. # data_2011904 loop_ _publ_author_name 'Bats, Jan W.' 'Bolte, Michael' 'Grundl, Marc A.' 'Hashmi, A. Stephen K.' _publ_section_title ;Dimethyl dispiro[tricyclo[3.3.1.1^3,7^]decane-1,2'-bicyclo[1.1.0]butane-4',1''-tricyclo[3.3.1.1^3,7^]decane]-1',3'-dicarboxylate, a strain-enhanced bicyclo[1.1.0]butane with a very short intramolecular C---H···H---C contact ; _journal_issue 4 _journal_name_full 'Acta Crystallographica Section C' _journal_page_first 441 _journal_page_last 443 _journal_volume 57 _journal_year 2001 _chemical_formula_iupac 'C26 H34 O4' _chemical_formula_moiety 'C26 H34 O4' _chemical_formula_sum 'C26 H34 O4' _chemical_formula_weight 410.53 _chemical_name_systematic ; Dimethyl dispiro[tricyclo[3.3.1.1^3,7^]decan-1,2'-bicyclo[1.1.0]butan-4',1"- tricyclo[3.3.1.1^3,7^]decane]-1',3'-dicarboxylate ; _space_group_IT_number 2 _symmetry_cell_setting triclinic _symmetry_space_group_name_Hall '-P 1' _symmetry_space_group_name_H-M 'P -1' _audit_creation_method SHELXL-97 _cell_angle_alpha 89.442(11) _cell_angle_beta 82.317(14) _cell_angle_gamma 70.628(8) _cell_formula_units_Z 2 _cell_length_a 9.710(2) _cell_length_b 10.3412(12) _cell_length_c 11.051(2) _cell_measurement_reflns_used 154 _cell_measurement_temperature 143(2) _cell_measurement_theta_max 23 _cell_measurement_theta_min 3 _cell_volume 1036.7(3) _computing_cell_refinement SMART _computing_data_collection 'SMART (Siemens, 1995)' _computing_data_reduction 'SAINT (Siemens, 1995)' _computing_molecular_graphics 'XP in SHELXTL (Sheldrick, 1996)' _computing_publication_material 'CIF in SHELXL97' _computing_structure_refinement 'SHELXL97 (Sheldrick, 1997)' _computing_structure_solution 'SHELXS97 (Sheldrick, 1997)' _diffrn_ambient_temperature 143(2) _diffrn_measured_fraction_theta_full .991 _diffrn_measured_fraction_theta_max .904 _diffrn_measurement_device_type 'Siemens SMART' _diffrn_measurement_method \w _diffrn_radiation_monochromator graphite _diffrn_radiation_source 'normal-focus sealed tube' _diffrn_radiation_type MoK\a _diffrn_radiation_wavelength .71073 _diffrn_reflns_av_R_equivalents .039 _diffrn_reflns_av_sigmaI/netI .0313 _diffrn_reflns_limit_h_max 13 _diffrn_reflns_limit_h_min -13 _diffrn_reflns_limit_k_max 14 _diffrn_reflns_limit_k_min -15 _diffrn_reflns_limit_l_max 15 _diffrn_reflns_limit_l_min -14 _diffrn_reflns_number 18851 _diffrn_reflns_theta_full 28.00 _diffrn_reflns_theta_max 31.00 _diffrn_reflns_theta_min 1.86 _diffrn_standards_decay_% .0 _diffrn_standards_interval_time 600 _diffrn_standards_number 299 _exptl_absorpt_coefficient_mu .087 _exptl_absorpt_correction_T_max .979 _exptl_absorpt_correction_T_min .952 _exptl_absorpt_correction_type numerical _exptl_absorpt_process_details 'using 7 indexed faces (SHELXTL; Sheldrick, 1996)' _exptl_crystal_colour colorless _exptl_crystal_density_diffrn 1.315 _exptl_crystal_density_method 'not measured' _exptl_crystal_description block _exptl_crystal_F_000 444 _exptl_crystal_size_max .48 _exptl_crystal_size_mid .40 _exptl_crystal_size_min .28 _refine_diff_density_max .37 _refine_diff_density_min -.22 _refine_ls_extinction_coef .010(2) _refine_ls_extinction_method SHELXL97 _refine_ls_goodness_of_fit_ref 1.060 _refine_ls_hydrogen_treatment constr _refine_ls_matrix_type full _refine_ls_number_parameters 274 _refine_ls_number_reflns 5993 _refine_ls_number_restraints 0 _refine_ls_restrained_S_all 1.060 _refine_ls_R_factor_all .051 _refine_ls_R_factor_gt .040 _refine_ls_shift/su_max <0.001 _refine_ls_shift/su_mean <0.001 _refine_ls_structure_factor_coef Fsqd _refine_ls_weighting_details 'calc w = 1/[\s^2^(Fo^2^)+(0.05P)^2^+0.3P] where P = (Fo^2^+2Fc^2^)/3' _refine_ls_weighting_scheme calc _refine_ls_wR_factor_ref .108 _reflns_number_gt 5005 _reflns_number_total 5993 _reflns_threshold_expression I>2\s(I) _[local]_cod_data_source_file sk1443.cif _[local]_cod_data_source_block I _cod_database_code 2011904 loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, -y, -z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv _atom_site_adp_type _atom_site_calc_flag _atom_site_refinement_flags _atom_site_occupancy _atom_site_disorder_assembly _atom_site_disorder_group _atom_site_type_symbol O1 .42055(8) .32625(8) .57659(7) .02072(16) Uani d . 1 . . O O2 .25334(9) .24662(10) .51236(8) .0295(2) Uani d . 1 . . O O3 .37319(11) .09580(9) .12022(8) .0303(2) Uani d . 1 . . O O4 .42088(11) .00529(9) .30046(9) .0345(2) Uani d . 1 . . O C1 .35946(12) .31470(12) .70090(10) .0227(2) Uani d . 1 . . C H1A .4143 .3441 .7570 .036 Uiso calc R 1 . . H H1B .3669 .2191 .7152 .036 Uiso calc R 1 . . H H1C .2557 .3731 .7150 .036 Uiso calc R 1 . . H C2 .35698(10) .28582(10) .49006(9) .01687(19) Uani d . 1 . . C C3 .43031(10) .30462(10) .36752(9) .01465(18) Uani d . 1 . . C C4 .45481(10) .22145(10) .24934(9) .01527(18) Uani d . 1 . . C C5 .41527(11) .09617(10) .23112(10) .0188(2) Uani d . 1 . . C C6 .32966(17) -.01992(14) .09111(13) .0390(3) Uani d . 1 . . C H6A .2767 .0001 .0199 .062 Uiso calc R 1 . . H H6B .2652 -.0368 .1611 .062 Uiso calc R 1 . . H H6C .4176 -.1014 .0726 .062 Uiso calc R 1 . . H C7 .35160(10) .36726(10) .25817(9) .01417(18) Uani d . 1 . . C C8 .37632(10) .48833(10) .18828(9) .01560(18) Uani d . 1 . . C H8 .4838 .4766 .1765 .019 Uiso calc R 1 . . H C9 .28983(12) .62223(10) .26257(10) .0203(2) Uani d . 1 . . C H9A .3235 .6183 .3436 .024 Uiso calc R 1 . . H H9B .3081 .7007 .2197 .024 Uiso calc R 1 . . H C10 .12491(12) .64259(11) .27870(10) .0212(2) Uani d . 1 . . C H10 .0689 .7296 .3272 .025 Uiso calc R 1 . . H C11 .07358(11) .64998(11) .15280(10) .0230(2) Uani d . 1 . . C H11A -.0335 .6652 .1625 .028 Uiso calc R 1 . . H H11B .0916 .7279 .1087 .028 Uiso calc R 1 . . H C12 .15783(11) .51578(11) .07917(9) .0204(2) Uani d . 1 . . C H12 .1237 .5200 -.0027 .025 Uiso calc R 1 . . H C13 .13139(11) .39529(11) .14811(10) .0207(2) Uani d . 1 . . C H13A .1842 .3089 .0996 .025 Uiso calc R 1 . . H H13B .0248 .4078 .1597 .025 Uiso calc R 1 . . H C14 .18625(10) .38593(10) .27338(9) .01628(19) Uani d . 1 . . C H14 .1683 .3071 .3178 .020 Uiso calc R 1 . . H C15 .10014(11) .52073(11) .34696(9) .0199(2) Uani d . 1 . . C H15A -.0063 .5327 .3595 .024 Uiso calc R 1 . . H H15B .1334 .5169 .4282 .024 Uiso calc R 1 . . H C16 .32288(11) .49341(11) .06308(9) .0192(2) Uani d . 1 . . C H16A .3429 .5690 .0165 .023 Uiso calc R 1 . . H H16B .3773 .4063 .0161 .023 Uiso calc R 1 . . H C17 .58552(10) .22727(10) .31183(9) .01446(18) Uani d . 1 . . C C18 .69998(10) .29134(10) .25623(9) .01571(18) Uani d . 1 . . C H18 .6490 .3806 .2200 .019 Uiso calc R 1 . . H C19 .78388(11) .31636(10) .35730(10) .01844(19) Uani d . 1 . . C H19A .8543 .3623 .3231 .022 Uiso calc R 1 . . H H19B .7134 .3774 .4227 .022 Uiso calc R 1 . . H C20 .86764(11) .18011(11) .41104(10) .0199(2) Uani d . 1 . . C H20 .9242 .1972 .4748 .024 Uiso calc R 1 . . H C21 .97368(11) .08379(11) .30920(10) .0210(2) Uani d . 1 . . C H21A 1.0462 .1259 .2715 .025 Uiso calc R 1 . . H H21B 1.0282 -.0040 .3439 .025 Uiso calc R 1 . . H C22 .88707(11) .05673(10) .21186(10) .0189(2) Uani d . 1 . . C H22 .9563 -.0076 .1465 .023 Uiso calc R 1 . . H C23 .77315(11) -.00646(10) .27077(10) .0187(2) Uani d . 1 . . C H23A .8241 -.0948 .3065 .022 Uiso calc R 1 . . H H23B .7177 -.0247 .2078 .022 Uiso calc R 1 . . H C24 .66555(10) .09231(10) .37140(9) .01657(19) Uani d . 1 . . C H24 .5918 .0504 .4095 .020 Uiso calc R 1 . . H C25 .75475(11) .11592(11) .46857(9) .0197(2) Uani d . 1 . . C H25A .6875 .1775 .5353 .024 Uiso calc R 1 . . H H25B .8060 .0274 .5039 .024 Uiso calc R 1 . . H C26 .80737(11) .19318(10) .15616(9) .01813(19) Uani d . 1 . . C H26A .8803 .2347 .1182 .022 Uiso calc R 1 . . H H26B .7526 .1768 .0918 .022 Uiso calc R 1 . . H loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 O1 .0228(4) .0253(4) .0160(3) -.0119(3) .0008(3) -.0013(3) O2 .0273(4) .0459(5) .0245(4) -.0233(4) -.0077(3) .0145(4) O3 .0477(5) .0270(4) .0242(4) -.0224(4) -.0067(4) -.0036(3) O4 .0429(5) .0250(4) .0464(5) -.0212(4) -.0192(4) .0140(4) C1 .0262(5) .0254(5) .0167(5) -.0103(4) .0008(4) .0012(4) C2 .0157(4) .0148(4) .0193(5) -.0036(3) -.0038(3) .0053(3) C3 .0140(4) .0141(4) .0165(4) -.0051(3) -.0035(3) .0033(3) C4 .0149(4) .0139(4) .0178(4) -.0054(3) -.0033(3) .0021(3) C5 .0145(4) .0157(4) .0261(5) -.0056(3) -.0016(4) .0002(4) C6 .0529(8) .0343(7) .0393(7) -.0273(6) -.0047(6) -.0125(6) C7 .0132(4) .0146(4) .0154(4) -.0050(3) -.0036(3) .0023(3) C8 .0137(4) .0167(4) .0169(4) -.0052(3) -.0035(3) .0049(3) C9 .0242(5) .0160(5) .0219(5) -.0072(4) -.0057(4) .0032(4) C10 .0211(5) .0173(5) .0204(5) -.0009(4) -.0012(4) .0020(4) C11 .0166(4) .0244(5) .0239(5) -.0012(4) -.0036(4) .0091(4) C12 .0173(4) .0285(5) .0161(5) -.0070(4) -.0060(4) .0058(4) C13 .0183(4) .0263(5) .0204(5) -.0096(4) -.0077(4) .0033(4) C14 .0133(4) .0190(5) .0176(4) -.0063(3) -.0034(3) .0042(4) C15 .0163(4) .0233(5) .0167(5) -.0029(4) -.0004(4) .0031(4) C16 .0168(4) .0243(5) .0152(4) -.0052(4) -.0021(3) .0046(4) C17 .0134(4) .0139(4) .0170(4) -.0052(3) -.0036(3) .0030(3) C18 .0139(4) .0152(4) .0192(5) -.0059(3) -.0038(3) .0044(3) C19 .0172(4) .0179(5) .0217(5) -.0071(4) -.0042(4) -.0001(4) C20 .0183(4) .0226(5) .0204(5) -.0072(4) -.0078(4) .0026(4) C21 .0144(4) .0212(5) .0260(5) -.0033(4) -.0050(4) .0039(4) C22 .0169(4) .0177(5) .0203(5) -.0040(4) -.0012(4) .0002(4) C23 .0188(4) .0140(4) .0230(5) -.0048(4) -.0040(4) .0021(4) C24 .0156(4) .0146(4) .0193(5) -.0042(3) -.0040(3) .0050(3) C25 .0191(4) .0213(5) .0176(5) -.0046(4) -.0050(4) .0042(4) C26 .0177(4) .0208(5) .0173(5) -.0082(4) -.0026(4) .0029(4) loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_site_symmetry_2 _geom_bond_distance _geom_bond_publ_flag O1 C2 . 1.3442(13) ? O1 C1 . 1.4420(13) ? O2 C2 . 1.2001(13) ? O3 C5 . 1.3431(14) ? O3 C6 . 1.4470(14) ? O4 C5 . 1.1986(13) ? C2 C3 . 1.4857(14) ? C3 C17 . 1.5006(13) ? C3 C4 . 1.5182(14) ? C3 C7 . 1.5387(13) ? C4 C5 . 1.4907(13) ? C4 C7 . 1.5039(13) ? C4 C17 . 1.5417(13) ? C7 C8 . 1.5338(13) ? C7 C14 . 1.5382(13) ? C8 C16 . 1.5360(14) ? C8 C9 . 1.5372(14) ? C9 C10 . 1.5301(15) ? C10 C11 . 1.5323(15) ? C10 C15 . 1.5326(15) ? C11 C12 . 1.5324(16) ? C12 C16 . 1.5272(14) ? C12 C13 . 1.5299(15) ? C13 C14 . 1.5394(14) ? C14 C15 . 1.5397(15) ? C17 C18 . 1.5329(13) ? C17 C24 . 1.5443(13) ? C18 C26 . 1.5337(14) ? C18 C19 . 1.5384(14) ? C19 C20 . 1.5336(14) ? C20 C25 . 1.5279(15) ? C20 C21 . 1.5332(15) ? C21 C22 . 1.5319(15) ? C22 C23 . 1.5340(14) ? C22 C26 . 1.5346(14) ? C23 C24 . 1.5412(14) ? C24 C25 . 1.5353(14) ? loop_ _atom_type_symbol _atom_type_description _atom_type_scat_dispersion_real _atom_type_scat_dispersion_imag _atom_type_scat_source C C .0033 .0016 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' H H .0000 .0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' O O .0106 .0060 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' loop_ _geom_angle_atom_site_label_1 _geom_angle_atom_site_label_2 _geom_angle_atom_site_label_3 _geom_angle C2 O1 C1 115.45(8) C5 O3 C6 115.46(10) O2 C2 O1 123.42(10) O2 C2 C3 127.21(10) O1 C2 C3 109.30(8) C2 C3 C17 126.86(8) C2 C3 C4 129.16(8) C17 C3 C4 61.42(6) C2 C3 C7 125.72(8) C17 C3 C7 104.41(8) C4 C3 C7 58.93(6) C5 C4 C7 126.45(8) C5 C4 C3 127.32(8) C7 C4 C3 61.21(6) C5 C4 C17 125.54(8) C7 C4 C17 104.10(7) C3 C4 C17 58.73(6) O4 C5 O3 122.72(10) O4 C5 C4 127.59(10) O3 C5 C4 109.68(9) C4 C7 C8 126.51(8) C4 C7 C14 115.84(8) C8 C7 C14 108.62(7) C4 C7 C3 59.85(6) C8 C7 C3 123.88(8) C14 C7 C3 114.88(8) C7 C8 C16 109.60(8) C7 C8 C9 109.12(8) C16 C8 C9 109.81(8) C10 C9 C8 109.81(8) C9 C10 C11 109.27(9) C9 C10 C15 108.37(8) C11 C10 C15 110.22(9) C12 C11 C10 109.63(8) C16 C12 C13 108.24(8) C16 C12 C11 109.64(9) C13 C12 C11 109.70(9) C12 C13 C14 110.27(8) C7 C14 C13 110.73(8) C7 C14 C15 108.79(8) C13 C14 C15 108.19(8) C10 C15 C14 110.18(8) C12 C16 C8 110.23(8) C3 C17 C18 125.79(8) C3 C17 C4 59.85(6) C18 C17 C4 124.24(8) C3 C17 C24 116.95(8) C18 C17 C24 108.80(8) C4 C17 C24 113.76(8) C17 C18 C26 109.11(8) C17 C18 C19 109.05(8) C26 C18 C19 110.13(8) C20 C19 C18 110.41(8) C25 C20 C21 109.81(9) C25 C20 C19 108.00(8) C21 C20 C19 109.67(8) C22 C21 C20 109.86(8) C21 C22 C23 109.61(9) C21 C22 C26 108.96(8) C23 C22 C26 109.35(8) C22 C23 C24 109.99(8) C25 C24 C23 108.22(8) C25 C24 C17 111.68(8) C23 C24 C17 108.20(8) C20 C25 C24 109.88(8) C18 C26 C22 109.62(8) loop_ _geom_hbond_atom_site_label_D _geom_hbond_atom_site_label_H _geom_hbond_atom_site_label_A _geom_hbond_site_symmetry_A _geom_hbond_distance_DH _geom_hbond_distance_HA _geom_hbond_distance_DA _geom_hbond_angle_DHA _geom_hbond_publ_flag C1 H1B O4 2_656 .98 2.53 3.288(2) 134 yes C13 H13A O3 1_555 .99 2.39 3.194(2) 138 yes C14 H14 O2 1_555 1.00 2.41 3.039(2) 120 yes C23 H23A O2 2_656 .99 2.71 3.482(2) 135 yes C24 H24 O4 1_555 1.00 2.34 3.000(2) 122 yes C25 H25A O1 1_555 .99 2.52 3.320(2) 138 yes 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 C1 O1 C2 O2 2.33(14) C1 O1 C2 C3 179.55(8) O2 C2 C3 C17 -115.47(12) O1 C2 C3 C17 67.45(12) O2 C2 C3 C4 -34.71(16) O1 C2 C3 C4 148.21(9) O2 C2 C3 C7 41.76(16) O1 C2 C3 C7 -135.33(9) C2 C3 C4 C5 -2.84(16) C17 C3 C4 C5 113.09(11) C7 C3 C4 C5 -115.69(11) C2 C3 C4 C7 112.85(11) C17 C3 C4 C7 -131.22(8) C2 C3 C4 C17 -115.93(11) C7 C3 C4 C17 131.22(8) C6 O3 C5 O4 2.11(16) C6 O3 C5 C4 -179.21(10) C7 C4 C5 O4 -115.56(13) C3 C4 C5 O4 -36.50(17) C17 C4 C5 O4 38.57(17) C7 C4 C5 O3 65.84(13) C3 C4 C5 O3 144.90(10) C17 C4 C5 O3 -140.03(10) C5 C4 C7 C8 -131.14(11) C3 C4 C7 C8 111.85(10) C17 C4 C7 C8 70.34(11) C5 C4 C7 C14 11.97(14) C3 C4 C7 C14 -105.03(9) C17 C4 C7 C14 -146.55(8) C5 C4 C7 C3 117.00(11) C17 C4 C7 C3 -41.52(7) C2 C3 C7 C4 -118.35(11) C17 C3 C7 C4 43.00(7) C2 C3 C7 C8 125.63(10) C17 C3 C7 C8 -73.03(11) C4 C3 C7 C8 -116.02(10) C2 C3 C7 C14 -11.71(13) C17 C3 C7 C14 149.63(8) C4 C3 C7 C14 106.64(9) C4 C7 C8 C16 86.22(11) C14 C7 C8 C16 -59.03(10) C3 C7 C8 C16 161.41(8) C4 C7 C8 C9 -153.50(9) C14 C7 C8 C9 61.25(10) C3 C7 C8 C9 -78.31(11) C7 C8 C9 C10 -61.50(10) C16 C8 C9 C10 58.65(10) C8 C9 C10 C11 -59.94(11) C8 C9 C10 C15 60.19(11) C9 C10 C11 C12 60.61(11) C15 C10 C11 C12 -58.38(11) C10 C11 C12 C16 -60.01(11) C10 C11 C12 C13 58.73(11) C16 C12 C13 C14 59.16(11) C11 C12 C13 C14 -60.44(11) C4 C7 C14 C13 -91.39(10) C8 C7 C14 C13 58.01(10) C3 C7 C14 C13 -158.41(8) C4 C7 C14 C15 149.84(8) C8 C7 C14 C15 -60.76(10) C3 C7 C14 C15 82.83(10) C12 C13 C14 C7 -58.93(11) C12 C13 C14 C15 60.20(10) C9 C10 C15 C14 -60.14(11) C11 C10 C15 C14 59.39(11) C7 C14 C15 C10 60.88(10) C13 C14 C15 C10 -59.47(10) C13 C12 C16 C8 -60.88(11) C11 C12 C16 C8 58.76(11) C7 C8 C16 C12 61.76(11) C9 C8 C16 C12 -58.09(11) C2 C3 C17 C18 -128.09(11) C4 C3 C17 C18 112.55(10) C7 C3 C17 C18 70.85(11) C2 C3 C17 C4 119.37(11) C7 C3 C17 C4 -41.70(7) C2 C3 C17 C24 16.22(14) C4 C3 C17 C24 -103.15(9) C7 C3 C17 C24 -144.84(8) C5 C4 C17 C3 -115.96(11) C7 C4 C17 C3 42.82(7) C5 C4 C17 C18 129.03(10) C7 C4 C17 C18 -72.19(11) C3 C4 C17 C18 -115.01(10) C5 C4 C17 C24 -7.48(13) C7 C4 C17 C24 151.30(8) C3 C4 C17 C24 108.48(9) C3 C17 C18 C26 -151.18(9) C4 C17 C18 C26 -76.14(11) C24 C17 C18 C26 62.15(10) C3 C17 C18 C19 88.50(11) C4 C17 C18 C19 163.53(8) C24 C17 C18 C19 -58.18(10) C17 C18 C19 C20 62.27(10) C26 C18 C19 C20 -57.43(10) C18 C19 C20 C25 -62.07(11) C18 C19 C20 C21 57.57(10) C25 C20 C21 C22 58.85(11) C19 C20 C21 C22 -59.68(11) C20 C21 C22 C23 -58.47(11) C20 C21 C22 C26 61.16(11) C21 C22 C23 C24 59.82(10) C26 C22 C23 C24 -59.57(11) C22 C23 C24 C25 -60.47(10) C22 C23 C24 C17 60.71(10) C3 C17 C24 C25 -92.73(10) C18 C17 C24 C25 57.28(10) C4 C17 C24 C25 -159.67(8) C3 C17 C24 C23 148.27(8) C18 C17 C24 C23 -61.72(10) C4 C17 C24 C23 81.33(10) C21 C20 C25 C24 -60.37(10) C19 C20 C25 C24 59.18(11) C23 C24 C25 C20 60.66(10) C17 C24 C25 C20 -58.33(11) C17 C18 C26 C22 -60.80(10) C19 C18 C26 C22 58.86(10) C21 C22 C26 C18 -60.59(10) C23 C22 C26 C18 59.20(10) _journal_paper_doi 10.1107/S010827010100004X