#------------------------------------------------------------------------------ #$Date: 2011-09-10 04:16:28 +0100 (Sat, 10 Sep 2011) $ #$Revision: 25271 $ #$URL: svn://www.crystallography.net/cod/cif/2/2003084.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_2003084 loop_ _publ_author_name 'Krebs, Frederik C.' 'Laursen, Bo W.' 'Johannsen, Ib' 'Faldt, Andr\'e' 'Bechgaard, Klaus' 'Jacobsen, Claus S.' 'Thorup, Niels' 'Boubekeur, Kamal' _publ_section_title ; The geometry and structural properties of the 4,8,12-trioxa-4,8,12,12c-tetrahydrodibenzo[cd,mn]pyrene system in the cationic state. Structures of a planar organic cation with various monovalent and divalent anions ; _journal_issue 3 _journal_name_full 'Acta Crystallographica Section B' _journal_page_first 410 _journal_page_last 423 _journal_volume 55 _journal_year 1999 _chemical_formula_moiety 'C19 H9 O3,Cl7 Mo3' _chemical_formula_sum 'C19 H9 Cl7 Mo3 O3' _chemical_formula_weight 821.23 _chemical_name_systematic ; Bis(4,8,12-trioxa-4,8,12,12c-tetrahydro-dibenzo[cd,mn]pyrenium) tetradecachlorohexamolybdate ; _space_group_IT_number 15 _symmetry_cell_setting monoclinic _symmetry_space_group_name_Hall '-C 2yc' _symmetry_space_group_name_H-M 'C 1 2/c 1' _audit_creation_method SHELXL-97 _cell_angle_alpha 90.00 _cell_angle_beta 97.93(3) _cell_angle_gamma 90.00 _cell_formula_units_Z 8 _cell_length_a 18.205(4) _cell_length_b 13.540(3) _cell_length_c 18.679(4) _cell_measurement_temperature 120(2) _cell_volume 4560.3(18) _computing_cell_refinement 'SAINT Siemens' _computing_data_collection 'SMART Siemens' _computing_data_reduction 'SAINT Siemens' _computing_molecular_graphics 'SHELXTL (Sheldrick)' _computing_publication_material 'XCIF (Sheldrick)' _computing_structure_refinement 'SHELXL-97 (Sheldrick, 1997)' _computing_structure_solution 'SHELXS-97 (Sheldrick, 1990)' _diffrn_ambient_temperature 293(2) _diffrn_measured_fraction_theta_full .478 _diffrn_measured_fraction_theta_max .478 _diffrn_measurement_device_type 'Siemens SMART CCD' _diffrn_measurement_method 'omega scan, frame data integration' _diffrn_radiation_monochromator graphite _diffrn_radiation_source 'fine-focus sealed tube' _diffrn_radiation_type MoK\a _diffrn_radiation_wavelength .71073 _diffrn_reflns_av_R_equivalents .0297 _diffrn_reflns_av_sigmaI/netI .0207 _diffrn_reflns_limit_h_max 22 _diffrn_reflns_limit_h_min -22 _diffrn_reflns_limit_k_max 16 _diffrn_reflns_limit_k_min -16 _diffrn_reflns_limit_l_max 23 _diffrn_reflns_limit_l_min -23 _diffrn_reflns_number 23431 _diffrn_reflns_theta_full 26.32 _diffrn_reflns_theta_max 26.32 _diffrn_reflns_theta_min 1.88 _exptl_absorpt_coefficient_mu 2.468 _exptl_absorpt_correction_T_max .862 _exptl_absorpt_correction_T_min .776 _exptl_absorpt_correction_type empirical _exptl_crystal_colour orange _exptl_crystal_density_diffrn 2.392 _exptl_crystal_density_method 'not measured' _exptl_crystal_description prism _exptl_crystal_F_000 3136 _exptl_crystal_size_max .18 _exptl_crystal_size_mid .13 _exptl_crystal_size_min .10 _refine_diff_density_max .379 _refine_diff_density_min -1.210 _refine_ls_extinction_method none _refine_ls_goodness_of_fit_ref 1.094 _refine_ls_hydrogen_treatment mixed _refine_ls_matrix_type full _refine_ls_number_parameters 289 _refine_ls_number_reflns 4631 _refine_ls_number_restraints 0 _refine_ls_restrained_S_all 1.094 _refine_ls_R_factor_all .0288 _refine_ls_R_factor_gt .0221 _refine_ls_shift/su_max .010 _refine_ls_structure_factor_coef Fsqd _refine_ls_weighting_scheme 'calc w=1/[\s^2^(Fo^2^)+(0.0310P)^2^+4.5834P] where P=(Fo^2^+2Fc^2^)/3' _refine_ls_wR_factor_ref .0563 _reflns_number_gt 4029 _reflns_number_total 4631 _reflns_threshold_expression >2sigma(I) _[local]_cod_data_source_file os0007.cif _[local]_cod_data_source_block 9 _[local]_cod_cif_authors_sg_H-M 'C 2/c' _cod_original_cell_volume 4560.3(16) _cod_database_code 2003084 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' 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_occupancy _atom_site_type_symbol Mo1 .050872(12) .519055(16) .421732(11) .00874(6) Uani d 1 Mo Mo2 -.088778(12) .522183(16) .441491(11) .00876(6) Uani d 1 Mo Mo3 -.007917(12) .366634(16) .478971(11) .00892(6) Uani d 1 Mo Cl1 .11919(4) .54599(5) .32044(3) .01566(14) Uani d 1 Cl Cl2 -.20765(3) .55673(5) .36800(3) .01437(13) Uani d 1 Cl Cl3 -.02055(4) .19090(5) .45114(4) .01621(14) Uani d 1 Cl Cl4 -.02895(3) .66392(5) .38961(3) .01189(13) Uani d 1 Cl Cl5 -.13876(3) .37565(5) .49929(3) .01174(13) Uani d 1 Cl Cl6 .12389(3) .36952(4) .46138(3) .01160(13) Uani d 1 Cl Cl7 -.04240(3) .41385(5) .35073(3) .01179(13) Uani d 1 Cl O1 -.29081(10) .36002(13) .59683(10) .0146(4) Uani d 1 O O2 -.37390(11) .66348(14) .69485(10) .0167(4) Uani d 1 O O3 -.38274(10) .35869(14) .82754(10) .0153(4) Uani d 1 O C1 -.35013(14) .4602(2) .70579(14) .0129(5) Uani d 1 C C2 -.33433(14) .5109(2) .64497(14) .0135(5) Uani d 1 C C3 -.30655(14) .4590(2) .58929(14) .0142(6) Uani d 1 C C4 -.29515(15) .5081(2) .52694(15) .0172(6) Uani d 1 C H4 -.2793 .4744 .4885 .021 Uiso calc 1 H C5 -.30814(15) .6098(2) .52334(15) .0177(6) Uani d 1 C H5 -.3001 .6430 .4816 .021 Uiso calc 1 H C6 -.33248(15) .6641(2) .57888(15) .0175(6) Uani d 1 C H6 -.3386 .7322 .5752 .021 Uiso calc 1 H C7 -.34714(14) .6135(2) .63956(14) .0145(5) Uani d 1 C C8 -.37924(15) .5109(2) .76055(14) .0127(5) Uani d 1 C C9 -.39032(15) .6136(2) .75494(14) .0146(6) Uani d 1 C C10 -.41693(16) .6648(2) .81001(15) .0191(6) Uani d 1 C H10 -.4232 .7329 .8078 .023 Uiso calc 1 H C11 -.43409(16) .6105(2) .86891(15) .0196(6) Uani d 1 C H11 -.4527 .6445 .9058 .024 Uiso calc 1 H C12 -.42508(16) .5082(2) .87612(15) .0170(6) Uani d 1 C H12 -.4382 .4748 .9160 .020 Uiso calc 1 H C13 -.39594(15) .4586(2) .82168(15) .0140(5) Uani d 1 C C14 -.33509(14) .3594(2) .71291(14) .0133(5) Uani d 1 C C15 -.35026(15) .3097(2) .77502(14) .0143(5) Uani d 1 C C16 -.33338(15) .2107(2) .78344(15) .0169(6) Uani d 1 C H16 -.3439 .1760 .8237 .020 Uiso calc 1 H C17 -.30006(15) .1646(2) .72952(15) .0163(6) Uani d 1 C H17 -.2880 .0980 .7352 .020 Uiso calc 1 H C18 -.28375(15) .2126(2) .66731(15) .0166(6) Uani d 1 C H18 -.2607 .1794 .6330 .020 Uiso calc 1 H C19 -.30282(14) .3101(2) .65858(14) .0142(6) Uani d 1 C 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 Mo1 .00966(11) .00890(12) .00809(11) .00078(8) .00280(8) .00075(8) Mo2 .00910(11) .00898(12) .00841(11) .00116(8) .00194(9) .00080(8) Mo3 .01010(11) .00791(11) .00914(11) .00078(8) .00268(9) .00043(8) Cl1 .0183(3) .0175(3) .0127(3) -.0004(3) .0076(3) .0012(2) Cl2 .0125(3) .0172(3) .0131(3) .0030(3) .0005(2) .0001(2) Cl3 .0196(3) .0102(3) .0195(3) .0002(3) .0049(3) -.0019(3) Cl4 .0135(3) .0109(3) .0116(3) .0018(2) .0030(2) .0032(2) Cl5 .0114(3) .0114(3) .0128(3) -.0012(2) .0030(2) .0002(2) Cl6 .0119(3) .0120(3) .0116(3) .0026(2) .0038(2) .0003(2) Cl7 .0131(3) .0131(3) .0094(3) .0002(2) .0019(2) -.0014(2) O1 .0171(10) .0153(10) .0121(9) .0011(8) .0044(8) -.0003(7) O2 .0227(10) .0142(10) .0141(9) .0060(8) .0059(8) .0022(8) O3 .0203(10) .0151(10) .0115(9) -.0008(8) .0065(8) .0005(7) C1 .0081(12) .0176(14) .0123(13) .0001(10) -.0013(10) .0003(10) C2 .0097(12) .0182(14) .0123(13) .0006(11) .0005(10) .0009(11) C3 .0117(13) .0164(14) .0138(13) -.0011(11) -.0013(11) .0013(10) C4 .0138(13) .0252(15) .0129(14) .0037(12) .0031(11) .0008(11) C5 .0150(13) .0257(15) .0129(13) .0045(12) .0039(11) .0080(12) C6 .0147(13) .0187(15) .0191(14) .0046(11) .0024(11) .0055(11) C7 .0112(13) .0184(14) .0138(13) .0024(11) .0018(10) .0007(11) C8 .0117(13) .0149(14) .0113(13) .0016(10) .0008(10) .0006(10) C9 .0138(13) .0173(14) .0130(13) .0025(11) .0028(11) .0028(11) C10 .0211(15) .0167(14) .0196(15) .0067(12) .0035(12) .0005(12) C11 .0208(15) .0235(16) .0152(14) .0041(12) .0048(12) -.0042(12) C12 .0167(14) .0214(15) .0139(13) -.0008(12) .0056(11) .0016(11) C13 .0127(13) .0147(14) .0146(13) -.0009(11) .0014(11) -.0001(10) C14 .0122(13) .0141(13) .0135(13) -.0017(10) .0013(10) -.0007(10) C15 .0142(13) .0172(14) .0111(12) -.0024(11) .0006(10) -.0023(11) C16 .0193(14) .0149(14) .0165(14) -.0039(11) .0021(11) .0010(11) C17 .0173(14) .0113(13) .0191(14) .0002(11) -.0013(11) -.0024(11) C18 .0175(14) .0164(14) .0154(13) .0007(11) .0000(11) -.0049(11) C19 .0127(13) .0184(14) .0110(12) -.0020(11) -.0001(10) -.0004(11) 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' Cl Cl .1484 .1585 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' Mo Mo -1.6832 .6857 '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_site_symmetry_1 _geom_angle_site_symmetry_3 _geom_angle Cl1 Mo1 Cl7 . . 93.24(3) Cl1 Mo1 Cl4 . . 92.23(3) Cl7 Mo1 Cl4 . . 89.41(3) Cl1 Mo1 Cl5 . 5_566 91.11(3) Cl7 Mo1 Cl5 . 5_566 175.61(2) Cl4 Mo1 Cl5 . 5_566 89.86(3) Cl1 Mo1 Cl6 . . 92.53(3) Cl7 Mo1 Cl6 . . 89.42(3) Cl4 Mo1 Cl6 . . 175.15(2) Cl5 Mo1 Cl6 5_566 . 90.95(3) Cl1 Mo1 Mo2 . 5_566 134.31(2) Cl7 Mo1 Mo2 . 5_566 118.23(3) Cl4 Mo1 Mo2 . 5_566 118.37(2) Cl5 Mo1 Mo2 5_566 5_566 58.54(2) Cl6 Mo1 Mo2 . 5_566 58.33(2) Cl1 Mo1 Mo3 . 5_566 134.27(2) Cl7 Mo1 Mo3 . 5_566 118.24(2) Cl4 Mo1 Mo3 . 5_566 58.55(2) Cl5 Mo1 Mo3 5_566 5_566 57.88(2) Cl6 Mo1 Mo3 . 5_566 118.15(2) Mo2 Mo1 Mo3 5_566 5_566 59.855(14) Cl1 Mo1 Mo2 . . 135.90(3) Cl7 Mo1 Mo2 . . 58.27(2) Cl4 Mo1 Mo2 . . 58.025(18) Cl5 Mo1 Mo2 5_566 . 117.85(2) Cl6 Mo1 Mo2 . . 117.52(2) Mo2 Mo1 Mo2 5_566 . 89.78(3) Mo3 Mo1 Mo2 5_566 . 59.98(2) Cl1 Mo1 Mo3 . . 135.85(2) Cl7 Mo1 Mo3 . . 58.22(2) Cl4 Mo1 Mo3 . . 117.76(2) Cl5 Mo1 Mo3 5_566 . 118.54(2) Cl6 Mo1 Mo3 . . 57.79(2) Mo2 Mo1 Mo3 5_566 . 60.022(15) Mo3 Mo1 Mo3 5_566 . 89.87(2) Mo2 Mo1 Mo3 . . 59.742(14) Cl2 Mo2 Cl4 . . 92.01(2) Cl2 Mo2 Cl7 . . 95.05(3) Cl4 Mo2 Cl7 . . 88.92(3) Cl2 Mo2 Cl6 . 5_566 90.01(3) Cl4 Mo2 Cl6 . 5_566 89.98(3) Cl7 Mo2 Cl6 . 5_566 174.86(2) Cl2 Mo2 Cl5 . . 92.74(2) Cl4 Mo2 Cl5 . . 175.23(2) Cl7 Mo2 Cl5 . . 90.25(3) Cl6 Mo2 Cl5 5_566 . 90.43(3) Cl2 Mo2 Mo3 . . 136.77(2) Cl4 Mo2 Mo3 . . 118.00(2) Cl7 Mo2 Mo3 . . 58.17(2) Cl6 Mo2 Mo3 5_566 . 118.23(2) Cl5 Mo2 Mo3 . . 57.79(2) Cl2 Mo2 Mo1 . 5_566 133.18(3) Cl4 Mo2 Mo1 . 5_566 118.58(2) Cl7 Mo2 Mo1 . 5_566 118.28(2) Cl6 Mo2 Mo1 5_566 5_566 58.122(19) Cl5 Mo2 Mo1 . 5_566 57.919(19) Mo3 Mo2 Mo1 . 5_566 60.140(16) Cl2 Mo2 Mo3 . 5_566 133.09(2) Cl4 Mo2 Mo3 . 5_566 58.490(19) Cl7 Mo2 Mo3 . 5_566 117.59(2) Cl6 Mo2 Mo3 5_566 5_566 57.76(2) Cl5 Mo2 Mo3 . 5_566 118.00(2) Mo3 Mo2 Mo3 . 5_566 90.09(2) Mo1 Mo2 Mo3 5_566 5_566 60.11(2) Cl2 Mo2 Mo1 . . 136.54(2) Cl4 Mo2 Mo1 . . 57.867(19) Cl7 Mo2 Mo1 . . 57.64(2) Cl6 Mo2 Mo1 5_566 . 117.71(3) Cl5 Mo2 Mo1 . . 117.91(2) Mo3 Mo2 Mo1 . . 60.140(12) Mo1 Mo2 Mo1 5_566 . 90.22(3) Mo3 Mo2 Mo1 5_566 . 59.962(16) Cl3 Mo3 Cl5 . . 90.94(2) Cl3 Mo3 Cl6 . . 92.97(2) Cl5 Mo3 Cl6 . . 176.07(2) Cl3 Mo3 Cl7 . . 92.40(2) Cl5 Mo3 Cl7 . . 90.84(4) Cl6 Mo3 Cl7 . . 89.34(3) Cl3 Mo3 Cl4 . 5_566 93.02(2) Cl5 Mo3 Cl4 . 5_566 89.50(4) Cl6 Mo3 Cl4 . 5_566 89.95(4) Cl7 Mo3 Cl4 . 5_566 174.56(2) Cl3 Mo3 Mo2 . . 134.18(2) Cl5 Mo3 Mo2 . . 58.682(18) Cl6 Mo3 Mo2 . . 118.335(19) Cl7 Mo3 Mo2 . . 58.23(2) Cl4 Mo3 Mo2 5_566 . 117.66(2) Cl3 Mo3 Mo1 . 5_566 134.37(2) Cl5 Mo3 Mo1 . 5_566 58.14(2) Cl6 Mo3 Mo1 . 5_566 118.45(3) Cl7 Mo3 Mo1 . 5_566 118.20(2) Cl4 Mo3 Mo1 5_566 5_566 57.687(19) Mo2 Mo3 Mo1 . 5_566 60.003(16) Cl3 Mo3 Mo2 . 5_566 135.90(2) Cl5 Mo3 Mo2 . 5_566 118.19(2) Cl6 Mo3 Mo2 . 5_566 58.41(2) Cl7 Mo3 Mo2 . 5_566 117.50(3) Cl4 Mo3 Mo2 5_566 5_566 57.79(2) Mo2 Mo3 Mo2 . 5_566 89.91(2) Mo1 Mo3 Mo2 5_566 5_566 60.054(16) Cl3 Mo3 Mo1 . . 135.49(2) Cl5 Mo3 Mo1 . . 118.78(2) Cl6 Mo3 Mo1 . . 58.230(19) Cl7 Mo3 Mo1 . . 57.65(2) Cl4 Mo3 Mo1 5_566 . 117.63(2) Mo2 Mo3 Mo1 . . 60.118(16) Mo1 Mo3 Mo1 5_566 . 90.13(2) Mo2 Mo3 Mo1 5_566 . 59.865(14) Mo1 Cl4 Mo2 . . 64.11(2) Mo1 Cl4 Mo3 . 5_566 63.77(2) Mo2 Cl4 Mo3 . 5_566 63.72(2) Mo3 Cl5 Mo1 . 5_566 63.98(2) Mo3 Cl5 Mo2 . . 63.53(2) Mo1 Cl5 Mo2 5_566 . 63.54(2) Mo3 Cl6 Mo1 . . 63.979(19) Mo3 Cl6 Mo2 . 5_566 63.83(3) Mo1 Cl6 Mo2 . 5_566 63.55(2) Mo1 Cl7 Mo3 . . 64.13(2) Mo1 Cl7 Mo2 . . 64.09(2) Mo3 Cl7 Mo2 . . 63.60(2) C3 O1 C19 . . 120.6(2) C9 O2 C7 . . 120.5(2) C15 O3 C13 . . 120.2(2) C2 C1 C8 . . 119.8(2) C2 C1 C14 . . 120.1(2) C8 C1 C14 . . 120.1(2) C1 C2 C3 . . 119.6(2) C1 C2 C7 . . 119.6(2) C3 C2 C7 . . 120.8(2) O1 C3 C4 . . 120.1(2) O1 C3 C2 . . 120.2(2) C4 C3 C2 . . 119.7(3) C3 C4 C5 . . 118.1(3) C6 C5 C4 . . 123.6(3) C7 C6 C5 . . 117.8(3) C6 C7 O2 . . 120.0(2) C6 C7 C2 . . 119.9(3) O2 C7 C2 . . 120.1(2) C1 C8 C9 . . 119.8(2) C1 C8 C13 . . 119.4(2) C9 C8 C13 . . 120.8(2) C10 C9 O2 . . 119.9(2) C10 C9 C8 . . 120.1(3) O2 C9 C8 . . 120.0(2) C9 C10 C11 . . 117.6(3) C10 C11 C12 . . 124.2(3) C13 C12 C11 . . 117.5(3) O3 C13 C12 . . 119.9(2) O3 C13 C8 . . 120.2(2) C12 C13 C8 . . 119.9(2) C15 C14 C1 . . 119.4(2) C15 C14 C19 . . 121.2(2) C1 C14 C19 . . 119.4(2) O3 C15 C16 . . 119.7(2) O3 C15 C14 . . 120.6(2) C16 C15 C14 . . 119.7(2) C15 C16 C17 . . 117.8(3) C16 C17 C18 . . 123.7(3) C19 C18 C17 . . 117.9(3) C18 C19 O1 . . 120.3(2) C18 C19 C14 . . 119.7(3) O1 C19 C14 . . 120.0(2) loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_site_symmetry_2 _geom_bond_distance Mo1 Cl1 . 2.4309(9) Mo1 Cl7 . 2.4596(8) Mo1 Cl4 . 2.4655(7) Mo1 Cl5 5_566 2.4735(8) Mo1 Cl6 . 2.4785(7) Mo1 Mo2 5_566 2.6133(7) Mo1 Mo3 5_566 2.6168(5) Mo1 Mo2 . 2.6192(6) Mo1 Mo3 . 2.6198(5) Mo2 Cl2 . 2.4427(10) Mo2 Cl4 . 2.4698(8) Mo2 Cl7 . 2.4765(8) Mo2 Cl6 5_566 2.4841(8) Mo2 Cl5 . 2.4902(8) Mo2 Mo3 . 2.6093(5) Mo2 Mo1 5_566 2.6132(7) Mo2 Mo3 5_566 2.6174(7) Mo3 Cl3 . 2.4397(8) Mo3 Cl5 . 2.4662(8) Mo3 Cl6 . 2.4667(8) Mo3 Cl7 . 2.4750(8) Mo3 Cl4 5_566 2.4886(8) Mo3 Mo1 5_566 2.6168(5) Mo3 Mo2 5_566 2.6174(7) Cl4 Mo3 5_566 2.4886(8) Cl5 Mo1 5_566 2.4733(9) Cl6 Mo2 5_566 2.4841(7) O1 C3 . 1.374(3) O1 C19 . 1.380(3) O2 C9 . 1.378(3) O2 C7 . 1.379(3) O3 C15 . 1.383(3) O3 C13 . 1.376(3) C1 C2 . 1.391(4) C1 C8 . 1.396(4) C1 C14 . 1.394(4) C2 C3 . 1.406(4) C2 C7 . 1.410(4) C3 C4 . 1.381(4) C4 C5 . 1.398(4) C5 C6 . 1.393(4) C6 C7 . 1.382(4) C8 C9 . 1.406(4) C8 C13 . 1.412(4) C9 C10 . 1.382(4) C10 C11 . 1.394(4) C11 C12 . 1.400(4) C12 C13 . 1.384(4) C14 C15 . 1.401(4) C14 C19 . 1.409(4) C15 C16 . 1.379(4) C16 C17 . 1.393(4) C17 C18 . 1.399(4) C18 C19 . 1.369(4)