#------------------------------------------------------------------------------ #$Date: 2014-03-10 20:43:55 +0200 (Mon, 10 Mar 2014) $ #$Revision: 104231 $ #$URL: file:///home/coder/svn-repositories/cod/cif/1/51/33/1513356.cif $ #------------------------------------------------------------------------------ # # This file is available in the Crystallography Open Database (COD), # http://www.crystallography.net/ # # All data on this site have been placed in the public domain by the # contributors. # data_1513356 loop_ _publ_author_name 'Li, Rui-Juan' 'Lin, Zhao-Min' 'Kang, Ya-Qi' 'Guo, Yan-Xia' 'Lv, Xin' 'Zhou, Jin-Chuan' 'Wang, Song' 'Lou, Hong-Xiang' _publ_section_title ; Cembrane-Type Diterpenoids from the Chinese Liverworts Chandonanthus hirtellus and C. birmensis. ; _journal_issue 2 _journal_name_full 'Journal of natural products' _journal_page_first 339 _journal_page_last 345 _journal_paper_doi 10.1021/np400936t _journal_volume 77 _journal_year 2014 _chemical_absolute_configuration ad _chemical_formula_moiety 'C22 H34 O5' _chemical_formula_sum 'C22 H34 O5' _chemical_formula_weight 378.49 _chemical_name_systematic ; ? ; _space_group_IT_number 4 _symmetry_cell_setting monoclinic _symmetry_space_group_name_Hall 'P 2yb' _symmetry_space_group_name_H-M 'P 1 21 1' _atom_sites_solution_hydrogens geom _atom_sites_solution_primary direct _atom_sites_solution_secondary difmap _audit_creation_method SHELXL-97 _cell_angle_alpha 90.00 _cell_angle_beta 95.410(2) _cell_angle_gamma 90.00 _cell_formula_units_Z 2 _cell_length_a 5.6773(2) _cell_length_b 13.9911(5) _cell_length_c 13.0148(5) _cell_measurement_reflns_used 7851 _cell_measurement_temperature 100(2) _cell_measurement_theta_max 69.23 _cell_measurement_theta_min 3.41 _cell_volume 1029.18(7) _computing_cell_refinement 'Bruker SAINT' _computing_data_collection 'Bruker APEX2' _computing_data_reduction 'Bruker SAINT' _computing_molecular_graphics 'Bruker SHELXTL' _computing_publication_material 'Bruker SHELXTL' _computing_structure_refinement 'SHELXL-97 (Sheldrick, 2008)' _computing_structure_solution 'SHELXS-97 (Sheldrick, 2008)' _diffrn_ambient_temperature 100(2) _diffrn_measured_fraction_theta_full 0.936 _diffrn_measured_fraction_theta_max 0.936 _diffrn_measurement_device_type 'Bruker APEX-II CCD' _diffrn_measurement_method '\f and \w scans' _diffrn_radiation_monochromator graphite _diffrn_radiation_source 'fine-focus sealed tube' _diffrn_radiation_type CuK\a _diffrn_radiation_wavelength 1.54178 _diffrn_reflns_av_R_equivalents 0.0460 _diffrn_reflns_av_sigmaI/netI 0.0582 _diffrn_reflns_limit_h_max 6 _diffrn_reflns_limit_h_min -6 _diffrn_reflns_limit_k_max 16 _diffrn_reflns_limit_k_min -16 _diffrn_reflns_limit_l_max 15 _diffrn_reflns_limit_l_min -14 _diffrn_reflns_number 8221 _diffrn_reflns_theta_full 69.44 _diffrn_reflns_theta_max 69.44 _diffrn_reflns_theta_min 3.41 _exptl_absorpt_coefficient_mu 0.684 _exptl_absorpt_correction_T_max 0.9163 _exptl_absorpt_correction_T_min 0.6387 _exptl_absorpt_correction_type multi-scan _exptl_absorpt_process_details sadabs _exptl_crystal_colour colourless _exptl_crystal_density_diffrn 1.221 _exptl_crystal_density_method 'not measured' _exptl_crystal_description prism _exptl_crystal_F_000 412 _exptl_crystal_size_max 0.72 _exptl_crystal_size_mid 0.14 _exptl_crystal_size_min 0.13 _refine_diff_density_max 0.294 _refine_diff_density_min -0.323 _refine_diff_density_rms 0.073 _refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881' _refine_ls_abs_structure_Flack 0.21(17) _refine_ls_extinction_method none _refine_ls_goodness_of_fit_ref 1.097 _refine_ls_hydrogen_treatment constr _refine_ls_matrix_type full _refine_ls_number_parameters 250 _refine_ls_number_reflns 3232 _refine_ls_number_restraints 1 _refine_ls_restrained_S_all 1.097 _refine_ls_R_factor_all 0.0472 _refine_ls_R_factor_gt 0.0471 _refine_ls_shift/su_max 0.001 _refine_ls_shift/su_mean 0.000 _refine_ls_structure_factor_coef Fsqd _refine_ls_weighting_details 'calc w=1/[\s^2^(Fo^2^)+(0.0784P)^2^+0.1446P] where P=(Fo^2^+2Fc^2^)/3' _refine_ls_weighting_scheme calc _refine_ls_wR_factor_gt 0.1185 _refine_ls_wR_factor_ref 0.1187 _reflns_number_gt 3215 _reflns_number_total 3232 _reflns_threshold_expression >2sigma(I) _[local]_cod_data_source_file np400936t_si_003.cif _[local]_cod_data_source_block cu_lhx3_0m _[local]_cod_cif_authors_sg_H-M 'P 21' _cod_depositor_comments ; The following automatic conversions were performed: '_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic' according to /usr/data/users/saulius/automatic-downloads/current/ACS/lib/dictionaries/cif_core.dic dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26. Automatic conversion script Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius ; _cod_database_code 1513356 loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, y+1/2, -z' 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 O4 O 0.9069(2) 1.01343(10) 0.34542(10) 0.0202(3) Uani 1 1 d . O21 O 1.1289(3) 1.13995(11) 0.30420(12) 0.0284(3) Uani 1 1 d . O14 O 0.2190(4) 0.65323(17) 0.34840(17) 0.0565(6) Uani 1 1 d . O12 O 0.3265(3) 0.60332(11) 0.15167(12) 0.0272(3) Uani 1 1 d . O7 O 1.2500(2) 0.87701(11) 0.03443(11) 0.0250(3) Uani 1 1 d . C20 C 0.6715(4) 0.53325(16) 0.25802(18) 0.0293(4) Uani 1 1 d . H20A H 0.5589 0.5275 0.3103 0.044 Uiso 1 1 calc R H20B H 0.8244 0.5554 0.2907 0.044 Uiso 1 1 calc R H20C H 0.6915 0.4708 0.2258 0.044 Uiso 1 1 calc R C12 C 0.5789(3) 0.60407(14) 0.17693(15) 0.0233(4) Uani 1 1 d . C13 C 0.4291(3) 0.68471(15) 0.20444(16) 0.0239(4) Uani 1 1 d . H13 H 0.4388 0.7436 0.1615 0.029 Uiso 1 1 calc R C14 C 0.3740(4) 0.70114(16) 0.31483(18) 0.0286(5) Uani 1 1 d . C1 C 0.5152(3) 0.77613(14) 0.37338(16) 0.0224(4) Uani 1 1 d . C2 C 0.7005(3) 0.82829(14) 0.31724(14) 0.0195(4) Uani 1 1 d . H2A H 0.7562 0.7857 0.2638 0.023 Uiso 1 1 calc R H2B H 0.8379 0.8440 0.3670 0.023 Uiso 1 1 calc R C3 C 0.6013(3) 0.92085(13) 0.26606(14) 0.0185(4) Uani 1 1 d . H3A H 0.5065 0.9036 0.2010 0.022 Uiso 1 1 calc R H3B H 0.4923 0.9503 0.3120 0.022 Uiso 1 1 calc R C4 C 0.7836(3) 0.99637(13) 0.24144(13) 0.0177(4) Uani 1 1 d . C21 C 1.0709(3) 1.08147(14) 0.36465(15) 0.0217(4) Uani 1 1 d . C22 C 1.1749(4) 1.07347(17) 0.47514(16) 0.0289(4) Uani 1 1 d . H22A H 1.3122 1.1159 0.4865 0.043 Uiso 1 1 calc R H22B H 1.2245 1.0074 0.4896 0.043 Uiso 1 1 calc R H22C H 1.0558 1.0919 0.5212 0.043 Uiso 1 1 calc R C15 C 0.4838(4) 0.79619(15) 0.47346(17) 0.0265(4) Uani 1 1 d . C17 C 0.6376(4) 0.86804(18) 0.53409(16) 0.0329(5) Uani 1 1 d . H17A H 0.7570 0.8345 0.5800 0.049 Uiso 1 1 calc R H17B H 0.5396 0.9077 0.5753 0.049 Uiso 1 1 calc R H17C H 0.7164 0.9087 0.4865 0.049 Uiso 1 1 calc R C16 C 0.3036(5) 0.7485(2) 0.53380(19) 0.0403(6) Uani 1 1 d . H16A H 0.1444 0.7620 0.5012 0.060 Uiso 1 1 calc R H16B H 0.3183 0.7731 0.6046 0.060 Uiso 1 1 calc R H16C H 0.3306 0.6793 0.5349 0.060 Uiso 1 1 calc R C11 C 0.7313(3) 0.61025(15) 0.08685(15) 0.0236(4) Uani 1 1 d . H11A H 0.8952 0.5919 0.1117 0.028 Uiso 1 1 calc R H11B H 0.6721 0.5631 0.0338 0.028 Uiso 1 1 calc R C10 C 0.7365(4) 0.70779(15) 0.03673(15) 0.0241(4) Uani 1 1 d . H10A H 0.7788 0.7562 0.0908 0.029 Uiso 1 1 calc R H10B H 0.5760 0.7232 0.0045 0.029 Uiso 1 1 calc R C9 C 0.9112(3) 0.71458(14) -0.04511(15) 0.0227(4) Uani 1 1 d . H9A H 0.8549 0.6730 -0.1039 0.027 Uiso 1 1 calc R H9B H 1.0660 0.6895 -0.0156 0.027 Uiso 1 1 calc R C8 C 0.9477(3) 0.81653(14) -0.08635(15) 0.0206(4) Uani 1 1 d . H8 H 1.0755 0.8127 -0.1341 0.025 Uiso 1 1 calc R C19 C 0.7258(4) 0.85568(16) -0.14915(16) 0.0265(4) Uani 1 1 d . H19A H 0.5948 0.8585 -0.1053 0.040 Uiso 1 1 calc R H19B H 0.6828 0.8136 -0.2081 0.040 Uiso 1 1 calc R H19C H 0.7582 0.9200 -0.1741 0.040 Uiso 1 1 calc R C7 C 1.0412(3) 0.87867(13) 0.00502(14) 0.0186(4) Uani 1 1 d . C6 C 0.8708(3) 0.93900(13) 0.06098(14) 0.0178(4) Uani 1 1 d . H6A H 0.7177 0.9051 0.0607 0.021 Uiso 1 1 calc R H6B H 0.8418 1.0002 0.0238 0.021 Uiso 1 1 calc R C5 C 0.9679(3) 0.95943(13) 0.17254(13) 0.0174(4) Uani 1 1 d . H5A H 1.0380 0.8999 0.2031 0.021 Uiso 1 1 calc R H5B H 1.0963 1.0073 0.1721 0.021 Uiso 1 1 calc R C18 C 0.6561(3) 1.08618(14) 0.20061(14) 0.0219(4) Uani 1 1 d . H18A H 0.5575 1.1108 0.2525 0.033 Uiso 1 1 calc R H18B H 0.5561 1.0709 0.1372 0.033 Uiso 1 1 calc R H18C H 0.7727 1.1347 0.1857 0.033 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 O4 0.0223(6) 0.0265(7) 0.0112(6) -0.0023(5) -0.0012(5) -0.0030(5) O21 0.0325(7) 0.0309(8) 0.0225(7) -0.0032(6) 0.0064(6) -0.0096(6) O14 0.0640(12) 0.0626(13) 0.0487(11) -0.0199(10) 0.0354(10) -0.0385(11) O12 0.0240(7) 0.0289(7) 0.0280(7) -0.0023(6) -0.0024(6) -0.0048(6) O7 0.0182(6) 0.0333(8) 0.0237(7) -0.0043(6) 0.0028(5) 0.0018(5) C20 0.0312(10) 0.0313(10) 0.0239(10) 0.0038(8) -0.0045(8) -0.0017(8) C12 0.0257(10) 0.0251(10) 0.0182(9) -0.0002(8) -0.0027(8) -0.0071(8) C13 0.0220(9) 0.0252(9) 0.0241(10) -0.0002(8) -0.0004(8) -0.0043(7) C14 0.0264(10) 0.0323(11) 0.0286(11) -0.0003(9) 0.0101(9) -0.0042(8) C1 0.0211(9) 0.0249(9) 0.0220(10) 0.0024(8) 0.0058(8) 0.0015(7) C2 0.0198(9) 0.0227(9) 0.0161(8) -0.0002(7) 0.0028(7) -0.0004(7) C3 0.0163(8) 0.0249(9) 0.0145(8) -0.0002(7) 0.0021(7) -0.0014(7) C4 0.0188(8) 0.0232(9) 0.0108(8) -0.0018(7) 0.0001(7) -0.0016(7) C21 0.0192(9) 0.0269(9) 0.0194(9) -0.0064(8) 0.0039(8) -0.0013(7) C22 0.0292(10) 0.0357(11) 0.0209(10) -0.0074(8) -0.0020(8) -0.0044(8) C15 0.0284(10) 0.0308(10) 0.0210(10) 0.0062(8) 0.0065(9) 0.0092(8) C17 0.0406(12) 0.0409(12) 0.0176(9) -0.0026(9) 0.0043(9) 0.0061(10) C16 0.0425(13) 0.0538(15) 0.0267(11) 0.0073(10) 0.0146(10) 0.0032(11) C11 0.0239(9) 0.0243(9) 0.0226(9) -0.0005(8) 0.0018(8) 0.0021(7) C10 0.0279(10) 0.0250(10) 0.0203(9) -0.0032(7) 0.0057(8) -0.0005(7) C9 0.0266(9) 0.0253(9) 0.0163(9) -0.0030(7) 0.0027(8) 0.0008(7) C8 0.0251(9) 0.0236(9) 0.0134(8) -0.0035(7) 0.0038(8) 0.0011(7) C19 0.0308(10) 0.0306(10) 0.0175(9) -0.0005(7) -0.0006(8) 0.0024(8) C7 0.0221(9) 0.0211(9) 0.0130(8) 0.0014(7) 0.0036(7) 0.0023(7) C6 0.0181(8) 0.0207(8) 0.0145(8) -0.0004(7) 0.0017(7) 0.0013(7) C5 0.0164(8) 0.0213(9) 0.0145(8) -0.0007(6) 0.0013(7) 0.0006(6) C18 0.0222(9) 0.0264(10) 0.0174(8) 0.0008(7) 0.0037(8) 0.0031(7) loop_ _atom_type_symbol _atom_type_description _atom_type_scat_dispersion_real _atom_type_scat_dispersion_imag _atom_type_scat_source C C 0.0181 0.0091 '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' O O 0.0492 0.0322 '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 C21 O4 C4 123.03(15) C13 O12 C12 62.05(12) C12 C20 H20A 109.5 C12 C20 H20B 109.5 H20A C20 H20B 109.5 C12 C20 H20C 109.5 H20A C20 H20C 109.5 H20B C20 H20C 109.5 O12 C12 C13 58.50(12) O12 C12 C20 115.45(17) C13 C12 C20 120.25(18) O12 C12 C11 116.73(16) C13 C12 C11 121.65(17) C20 C12 C11 112.98(18) O12 C13 C12 59.44(13) O12 C13 C14 117.77(17) C12 C13 C14 121.36(18) O12 C13 H13 115.5 C12 C13 H13 115.5 C14 C13 H13 115.5 O14 C14 C1 125.2(2) O14 C14 C13 118.5(2) C1 C14 C13 116.30(17) C15 C1 C14 121.56(18) C15 C1 C2 121.29(18) C14 C1 C2 117.13(17) C1 C2 C3 111.72(15) C1 C2 H2A 109.3 C3 C2 H2A 109.3 C1 C2 H2B 109.3 C3 C2 H2B 109.3 H2A C2 H2B 107.9 C4 C3 C2 116.34(14) C4 C3 H3A 108.2 C2 C3 H3A 108.2 C4 C3 H3B 108.2 C2 C3 H3B 108.2 H3A C3 H3B 107.4 O4 C4 C18 110.73(14) O4 C4 C5 107.41(13) C18 C4 C5 113.79(15) O4 C4 C3 100.95(14) C18 C4 C3 109.50(15) C5 C4 C3 113.68(15) O21 C21 O4 126.18(18) O21 C21 C22 124.62(19) O4 C21 C22 109.20(17) C21 C22 H22A 109.5 C21 C22 H22B 109.5 H22A C22 H22B 109.5 C21 C22 H22C 109.5 H22A C22 H22C 109.5 H22B C22 H22C 109.5 C1 C15 C16 124.4(2) C1 C15 C17 121.18(19) C16 C15 C17 114.35(19) C15 C17 H17A 109.5 C15 C17 H17B 109.5 H17A C17 H17B 109.5 C15 C17 H17C 109.5 H17A C17 H17C 109.5 H17B C17 H17C 109.5 C15 C16 H16A 109.5 C15 C16 H16B 109.5 H16A C16 H16B 109.5 C15 C16 H16C 109.5 H16A C16 H16C 109.5 H16B C16 H16C 109.5 C10 C11 C12 114.73(16) C10 C11 H11A 108.6 C12 C11 H11A 108.6 C10 C11 H11B 108.6 C12 C11 H11B 108.6 H11A C11 H11B 107.6 C11 C10 C9 113.42(17) C11 C10 H10A 108.9 C9 C10 H10A 108.9 C11 C10 H10B 108.9 C9 C10 H10B 108.9 H10A C10 H10B 107.7 C10 C9 C8 114.68(16) C10 C9 H9A 108.6 C8 C9 H9A 108.6 C10 C9 H9B 108.6 C8 C9 H9B 108.6 H9A C9 H9B 107.6 C7 C8 C19 114.74(16) C7 C8 C9 107.66(15) C19 C8 C9 112.56(17) C7 C8 H8 107.2 C19 C8 H8 107.2 C9 C8 H8 107.2 C8 C19 H19A 109.5 C8 C19 H19B 109.5 H19A C19 H19B 109.5 C8 C19 H19C 109.5 H19A C19 H19C 109.5 H19B C19 H19C 109.5 O7 C7 C6 120.49(16) O7 C7 C8 119.55(16) C6 C7 C8 119.92(15) C7 C6 C5 111.68(14) C7 C6 H6A 109.3 C5 C6 H6A 109.3 C7 C6 H6B 109.3 C5 C6 H6B 109.3 H6A C6 H6B 107.9 C4 C5 C6 114.45(14) C4 C5 H5A 108.6 C6 C5 H5A 108.6 C4 C5 H5B 108.6 C6 C5 H5B 108.6 H5A C5 H5B 107.6 C4 C18 H18A 109.5 C4 C18 H18B 109.5 H18A C18 H18B 109.5 C4 C18 H18C 109.5 H18A C18 H18C 109.5 H18B C18 H18C 109.5 loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance O4 C21 1.339(2) O4 C4 1.483(2) O21 C21 1.202(3) O14 C14 1.219(3) O12 C13 1.426(2) O12 C12 1.440(2) O7 C7 1.211(2) C20 C12 1.506(3) C20 H20A 0.9800 C20 H20B 0.9800 C20 H20C 0.9800 C12 C13 1.477(3) C12 C11 1.524(3) C13 C14 1.517(3) C13 H13 1.0000 C14 C1 1.486(3) C1 C15 1.360(3) C1 C2 1.522(3) C2 C3 1.539(3) C2 H2A 0.9900 C2 H2B 0.9900 C3 C4 1.534(2) C3 H3A 0.9900 C3 H3B 0.9900 C4 C18 1.521(3) C4 C5 1.530(2) C21 C22 1.506(3) C22 H22A 0.9800 C22 H22B 0.9800 C22 H22C 0.9800 C15 C16 1.503(3) C15 C17 1.505(3) C17 H17A 0.9800 C17 H17B 0.9800 C17 H17C 0.9800 C16 H16A 0.9800 C16 H16B 0.9800 C16 H16C 0.9800 C11 C10 1.514(3) C11 H11A 0.9900 C11 H11B 0.9900 C10 C9 1.525(3) C10 H10A 0.9900 C10 H10B 0.9900 C9 C8 1.545(3) C9 H9A 0.9900 C9 H9B 0.9900 C8 C7 1.527(2) C8 C19 1.537(3) C8 H8 1.0000 C19 H19A 0.9800 C19 H19B 0.9800 C19 H19C 0.9800 C7 C6 1.521(3) C6 C5 1.531(2) C6 H6A 0.9900 C6 H6B 0.9900 C5 H5A 0.9900 C5 H5B 0.9900 C18 H18A 0.9800 C18 H18B 0.9800 C18 H18C 0.9800 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 C13 O12 C12 C20 111.3(2) C13 O12 C12 C11 -112.4(2) C12 O12 C13 C14 -111.8(2) C20 C12 C13 O12 -103.07(19) C11 C12 C13 O12 104.00(19) O12 C12 C13 C14 105.9(2) C20 C12 C13 C14 2.8(3) C11 C12 C13 C14 -150.10(18) O12 C13 C14 O14 -10.6(3) C12 C13 C14 O14 -80.0(3) O12 C13 C14 C1 169.76(17) C12 C13 C14 C1 100.4(2) O14 C14 C1 C15 1.4(4) C13 C14 C1 C15 -179.02(19) O14 C14 C1 C2 -179.8(2) C13 C14 C1 C2 -0.2(3) C15 C1 C2 C3 -88.1(2) C14 C1 C2 C3 93.2(2) C1 C2 C3 C4 158.87(16) C21 O4 C4 C18 -58.0(2) C21 O4 C4 C5 66.8(2) C21 O4 C4 C3 -173.89(16) C2 C3 C4 O4 -58.04(18) C2 C3 C4 C18 -174.85(15) C2 C3 C4 C5 56.6(2) C4 O4 C21 O21 4.7(3) C4 O4 C21 C22 -174.97(16) C14 C1 C15 C16 -1.8(3) C2 C1 C15 C16 179.5(2) C14 C1 C15 C17 176.27(19) C2 C1 C15 C17 -2.5(3) O12 C12 C11 C10 74.2(2) C13 C12 C11 C10 6.4(3) C20 C12 C11 C10 -148.36(17) C12 C11 C10 C9 173.65(16) C11 C10 C9 C8 -171.51(16) C10 C9 C8 C7 59.9(2) C10 C9 C8 C19 -67.5(2) C19 C8 C7 O7 -152.00(18) C9 C8 C7 O7 81.8(2) C19 C8 C7 C6 30.4(3) C9 C8 C7 C6 -95.74(19) O7 C7 C6 C5 -22.8(2) C8 C7 C6 C5 154.71(16) O4 C4 C5 C6 -179.32(15) C18 C4 C5 C6 -56.4(2) C3 C4 C5 C6 69.9(2) C7 C6 C5 C4 -164.76(15)