#------------------------------------------------------------------------------ #$Date: 2011-03-06 04:48:46 +0200 (Sun, 06 Mar 2011) $ #$Revision: 13281 $ #$URL: file:///home/coder/svn-repositories/cod/cif/8/8102542.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_8102542 loop_ _publ_author_name 'Yuan Wang' 'Wei-Na Wu' 'Rui-Qi Zhao' 'Qiu-Fen Wang' 'Bao-Feng Qin' _publ_section_title ; Crystal structure of ethyl 5-[(3,4-dimethyl-1H-pyrrole-2-carboxylimino)methyl]-3,4-dimethyl-1H-pyrrole-2-carboxylate monohydrate, C17H22N4O3 · H2O ; _journal_issue 4 _journal_name_full 'Zeitschrift f\"ur Kristallographie - New Crystal Structures' _journal_page_first 625 _journal_volume 224 _journal_year 2009 _chemical_formula_sum 'C17 H24 N4 O4' _chemical_formula_weight 348.40 _chemical_name_systematic ; ? ; _space_group_IT_number 2 _symmetry_cell_setting triclinic _symmetry_space_group_name_Hall '-P 1' _symmetry_space_group_name_H-M 'P -1' _atom_sites_solution_hydrogens geom _atom_sites_solution_primary direct _atom_sites_solution_secondary difmap _audit_creation_method SHELXL-97 _audit_update_record ; 2009-08-31 # Formatted by publCIF ; _cell_angle_alpha 109.3370(10) _cell_angle_beta 95.6690(10) _cell_angle_gamma 105.2850(10) _cell_formula_units_Z 2 _cell_length_a 6.4444(6) _cell_length_b 12.1465(11) _cell_length_c 12.6768(11) _cell_measurement_reflns_used 4404 _cell_measurement_temperature 296(2) _cell_measurement_theta_max 0.00 _cell_measurement_theta_min 0.00 _cell_volume 884.13(14) _computing_cell_refinement 'Bruker SMART' _computing_data_collection 'Bruker SMART' _computing_data_reduction 'Bruker SAINT' _computing_molecular_graphics 'Bruker SHELXTL' _computing_publication_material 'Bruker SHELXTL' _computing_structure_refinement 'SHELXL-97 (Sheldrick, 1997)' _computing_structure_solution 'SHELXS-97 (Sheldrick, 1990)' _diffrn_ambient_temperature 296(2) _diffrn_measured_fraction_theta_full 0.997 _diffrn_measured_fraction_theta_max 0.997 _diffrn_measurement_device_type 'Bruker APEX-II CCD' _diffrn_measurement_method 'phi and omega scans' _diffrn_radiation_monochromator graphite _diffrn_radiation_source 'fine-focus sealed tube' _diffrn_radiation_type MoK\a _diffrn_radiation_wavelength 0.71073 _diffrn_reflns_av_R_equivalents 0.0172 _diffrn_reflns_av_sigmaI/netI 0.0177 _diffrn_reflns_limit_h_max 7 _diffrn_reflns_limit_h_min -7 _diffrn_reflns_limit_k_max 14 _diffrn_reflns_limit_k_min -14 _diffrn_reflns_limit_l_max 15 _diffrn_reflns_limit_l_min -15 _diffrn_reflns_number 8785 _diffrn_reflns_theta_full 25.22 _diffrn_reflns_theta_max 25.22 _diffrn_reflns_theta_min 2.03 _exptl_absorpt_coefficient_mu 0.095 _exptl_absorpt_correction_T_max 0.986 _exptl_absorpt_correction_T_min 0.974 _exptl_absorpt_correction_type multi-scan _exptl_crystal_colour Yellow _exptl_crystal_density_diffrn 1.309 _exptl_crystal_density_method 'not measured' _exptl_crystal_description Prism _exptl_crystal_F_000 372 _exptl_crystal_size_max 0.30 _exptl_crystal_size_mid 0.23 _exptl_crystal_size_min 0.15 _refine_diff_density_max 0.239 _refine_diff_density_min -0.224 _refine_diff_density_rms 0.042 _refine_ls_extinction_coef 0.023(4) _refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^ _refine_ls_extinction_method SHELXL _refine_ls_goodness_of_fit_ref 1.039 _refine_ls_hydrogen_treatment mixed _refine_ls_matrix_type full _refine_ls_number_parameters 238 _refine_ls_number_reflns 3187 _refine_ls_number_restraints 3 _refine_ls_restrained_S_all 1.039 _refine_ls_R_factor_all 0.0464 _refine_ls_R_factor_gt 0.0399 _refine_ls_shift/su_max 0.000 _refine_ls_shift/su_mean 0.000 _refine_ls_structure_factor_coef Fsqd _refine_ls_weighting_details 'calc w=1/[\s^2^(Fo^2^)+(0.0652P)^2^+0.1897P] where P=(Fo^2^+2Fc^2^)/3' _refine_ls_weighting_scheme calc _refine_ls_wR_factor_gt 0.1119 _refine_ls_wR_factor_ref 0.1185 _reflns_number_gt 2715 _reflns_number_total 3187 _reflns_threshold_expression >2sigma(I) _[local]_cod_data_source_file 1267-2754.cff _[local]_cod_data_source_block z _[local]_cod_cif_authors_sg_H-M P-1 _cod_depositor_comments ; The following automatic conversions were performed: '_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic' according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29. '_exptl_absorpt_correction_type' value 'Multi-scan' changed to 'multi-scan' according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29. Automatic conversion script Id: cif_fix_enum 1555 2011-01-17 13:19:09Z saulius ; _cod_database_code 8102542 loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, -y, -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 _atom_site_disorder_assembly _atom_site_disorder_group N1 N 0.24778(19) 0.27862(11) 0.35253(11) 0.0435(3) Uani 1 1 d . . . H1 H 0.1664 0.2212 0.3697 0.052 Uiso 1 1 calc R . . N2 N 0.4901(2) 0.22825(11) 0.51833(11) 0.0448(3) Uani 1 1 d . . . N3 N 0.6192(2) 0.19475(12) 0.58676(11) 0.0464(3) Uani 1 1 d . . . H3 H 0.7601 0.2199 0.5965 0.056 Uiso 1 1 calc R . . C11 C 0.5169(2) 0.12032(13) 0.63869(13) 0.0425(3) Uani 1 1 d . . . N4 N 0.5646(2) -0.00447(12) 0.74767(12) 0.0497(3) Uani 1 1 d . . . H4 H 0.4294 -0.0501 0.7257 0.060 Uiso 1 1 calc R . . C7 C 0.4658(2) 0.33555(13) 0.39537(12) 0.0412(3) Uani 1 1 d . . . C12 C 0.6570(2) 0.09081(13) 0.71473(13) 0.0422(3) Uani 1 1 d . . . C6 C 0.5384(2) 0.42384(13) 0.34869(13) 0.0419(3) Uani 1 1 d . . . C13 C 0.8757(2) 0.14248(14) 0.77121(13) 0.0434(4) Uani 1 1 d . . . C5 C 0.3561(2) 0.41877(13) 0.27425(13) 0.0420(3) Uani 1 1 d . . . C4 C 0.1774(2) 0.32653(13) 0.27784(12) 0.0414(3) Uani 1 1 d . . . C14 C 0.9127(3) 0.07313(15) 0.83676(14) 0.0493(4) Uani 1 1 d . . . C10 C 0.5895(2) 0.30065(14) 0.47300(13) 0.0450(4) Uani 1 1 d . . . H10 H 0.7421 0.3311 0.4900 0.054 Uiso 1 1 calc R . . C15 C 0.7183(3) -0.01563(15) 0.81987(14) 0.0539(4) Uani 1 1 d . . . H15 H 0.6956 -0.0745 0.8530 0.065 Uiso 1 1 calc R . . C16 C 1.0437(3) 0.25508(15) 0.77266(15) 0.0548(4) Uani 1 1 d . . . H16A H 1.1295 0.2317 0.7164 0.082 Uiso 1 1 calc R . . H16B H 1.1383 0.2971 0.8469 0.082 Uiso 1 1 calc R . . H16C H 0.9711 0.3086 0.7557 0.082 Uiso 1 1 calc R . . C9 C 0.7669(3) 0.51042(15) 0.37489(16) 0.0543(4) Uani 1 1 d . . . H9A H 0.8609 0.4925 0.4261 0.081 Uiso 1 1 calc R . . H9B H 0.7659 0.5934 0.4099 0.081 Uiso 1 1 calc R . . H9C H 0.8204 0.5008 0.3054 0.081 Uiso 1 1 calc R . . C8 C 0.3578(3) 0.49908(16) 0.20661(16) 0.0576(4) Uani 1 1 d . . . H8A H 0.3286 0.4500 0.1266 0.086 Uiso 1 1 calc R . . H8B H 0.4991 0.5607 0.2276 0.086 Uiso 1 1 calc R . . H8C H 0.2466 0.5381 0.2221 0.086 Uiso 1 1 calc R . . C17 C 1.1269(3) 0.0956(2) 0.91189(17) 0.0696(5) Uani 1 1 d . . . H17A H 1.1541 0.1674 0.9796 0.104 Uiso 1 1 calc R . . H17B H 1.2438 0.1080 0.8714 0.104 Uiso 1 1 calc R . . H17C H 1.1198 0.0258 0.9328 0.104 Uiso 1 1 calc R . . O1 O -0.08714(17) 0.32076(11) 0.13762(10) 0.0548(3) Uani 1 1 d . . . O2 O -0.18837(19) 0.19564(11) 0.23241(12) 0.0639(4) Uani 1 1 d . . . C3 C -0.0496(2) 0.27340(14) 0.21614(13) 0.0452(4) Uani 1 1 d . . . C2 C -0.3067(3) 0.27497(17) 0.06878(15) 0.0577(4) Uani 1 1 d . . . H2A H -0.4140 0.2819 0.1171 0.069 Uiso 1 1 calc R . . H2B H -0.3409 0.1893 0.0199 0.069 Uiso 1 1 calc R . . O3 O 0.31492(17) 0.08238(11) 0.62298(11) 0.0579(3) Uani 1 1 d . . . C1 C -0.3098(3) 0.3524(2) -0.00158(17) 0.0727(6) Uani 1 1 d . . . H1A H -0.2796 0.4365 0.0479 0.109 Uiso 1 1 calc R . . H1B H -0.4518 0.3237 -0.0506 0.109 Uiso 1 1 calc R . . H1C H -0.1998 0.3465 -0.0472 0.109 Uiso 1 1 calc R . . O1W O 0.00234(18) -0.14613(11) 0.52306(11) 0.0571(3) Uani 1 1 d D . . H1WA H 0.093(3) -0.0682(11) 0.5600(16) 0.086 Uiso 1 1 d D . . H1WB H -0.123(2) -0.1384(17) 0.4933(17) 0.086 Uiso 1 1 d 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 N1 0.0359(7) 0.0448(7) 0.0517(7) 0.0251(6) 0.0058(5) 0.0080(5) N2 0.0348(6) 0.0518(7) 0.0511(7) 0.0248(6) 0.0035(5) 0.0136(6) N3 0.0296(6) 0.0577(8) 0.0577(8) 0.0320(6) 0.0032(5) 0.0117(5) C11 0.0336(8) 0.0412(8) 0.0503(8) 0.0175(7) 0.0052(6) 0.0084(6) N4 0.0436(7) 0.0462(7) 0.0577(8) 0.0255(6) 0.0059(6) 0.0051(6) C7 0.0348(7) 0.0435(8) 0.0443(8) 0.0173(6) 0.0056(6) 0.0106(6) C12 0.0385(8) 0.0408(8) 0.0480(8) 0.0198(6) 0.0074(6) 0.0097(6) C6 0.0367(7) 0.0421(8) 0.0454(8) 0.0166(6) 0.0080(6) 0.0094(6) C13 0.0393(8) 0.0454(8) 0.0462(8) 0.0197(6) 0.0066(6) 0.0118(6) C5 0.0405(8) 0.0419(8) 0.0461(8) 0.0194(6) 0.0097(6) 0.0128(6) C4 0.0384(8) 0.0439(8) 0.0446(8) 0.0199(6) 0.0070(6) 0.0134(6) C14 0.0468(9) 0.0548(9) 0.0486(9) 0.0234(7) 0.0046(7) 0.0164(7) C10 0.0338(7) 0.0505(9) 0.0503(8) 0.0221(7) 0.0041(6) 0.0097(6) C15 0.0610(10) 0.0521(9) 0.0554(9) 0.0307(8) 0.0087(8) 0.0167(8) C16 0.0393(8) 0.0567(10) 0.0642(10) 0.0284(8) 0.0027(7) 0.0038(7) C9 0.0408(8) 0.0535(9) 0.0654(10) 0.0262(8) 0.0068(7) 0.0060(7) C8 0.0538(10) 0.0598(10) 0.0691(11) 0.0391(9) 0.0109(8) 0.0149(8) C17 0.0601(11) 0.0849(14) 0.0709(12) 0.0414(11) -0.0016(9) 0.0239(10) O1 0.0408(6) 0.0673(7) 0.0549(7) 0.0297(6) -0.0017(5) 0.0100(5) O2 0.0406(6) 0.0656(8) 0.0853(9) 0.0415(7) 0.0009(6) 0.0035(6) C3 0.0400(8) 0.0454(8) 0.0504(9) 0.0193(7) 0.0064(7) 0.0133(7) C2 0.0425(9) 0.0669(11) 0.0554(10) 0.0189(8) -0.0042(7) 0.0143(8) O3 0.0324(6) 0.0658(7) 0.0781(8) 0.0380(6) 0.0055(5) 0.0074(5) C1 0.0624(12) 0.0986(15) 0.0628(11) 0.0390(11) 0.0013(9) 0.0270(11) O1W 0.0368(6) 0.0627(7) 0.0750(8) 0.0371(6) 0.0037(5) 0.0089(5) 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' N N 0.0061 0.0033 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' O O 0.0106 0.0060 '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 _geom_angle_site_symmetry_1 _geom_angle_site_symmetry_3 _geom_angle_publ_flag C7 N1 C4 109.41(12) . . ? C7 N1 H1 125.3 . . ? C4 N1 H1 125.3 . . ? C10 N2 N3 116.70(13) . . ? C11 N3 N2 117.73(12) . . ? C11 N3 H3 121.1 . . ? N2 N3 H3 121.1 . . ? O3 C11 N3 121.11(14) . . ? O3 C11 C12 122.15(14) . . ? N3 C11 C12 116.73(13) . . ? C15 N4 C12 109.43(14) . . ? C15 N4 H4 125.3 . . ? C12 N4 H4 125.3 . . ? N1 C7 C6 108.40(13) . . ? N1 C7 C10 122.28(13) . . ? C6 C7 C10 129.28(14) . . ? N4 C12 C13 107.32(13) . . ? N4 C12 C11 118.21(13) . . ? C13 C12 C11 134.38(14) . . ? C7 C6 C5 107.30(13) . . ? C7 C6 C9 126.36(14) . . ? C5 C6 C9 126.33(14) . . ? C12 C13 C14 106.94(14) . . ? C12 C13 C16 128.79(14) . . ? C14 C13 C16 124.13(14) . . ? C4 C5 C6 106.64(13) . . ? C4 C5 C8 127.66(14) . . ? C6 C5 C8 125.70(14) . . ? N1 C4 C5 108.25(12) . . ? N1 C4 C3 118.72(13) . . ? C5 C4 C3 132.95(14) . . ? C15 C14 C13 107.11(14) . . ? C15 C14 C17 127.21(16) . . ? C13 C14 C17 125.68(16) . . ? N2 C10 C7 120.22(13) . . ? N2 C10 H10 119.9 . . ? C7 C10 H10 119.9 . . ? N4 C15 C14 109.18(14) . . ? N4 C15 H15 125.4 . . ? C14 C15 H15 125.4 . . ? C13 C16 H16A 109.5 . . ? C13 C16 H16B 109.5 . . ? H16A C16 H16B 109.5 . . ? C13 C16 H16C 109.5 . . ? H16A C16 H16C 109.5 . . ? H16B C16 H16C 109.5 . . ? C6 C9 H9A 109.5 . . ? C6 C9 H9B 109.5 . . ? H9A C9 H9B 109.5 . . ? C6 C9 H9C 109.5 . . ? H9A C9 H9C 109.5 . . ? H9B C9 H9C 109.5 . . ? C5 C8 H8A 109.5 . . ? C5 C8 H8B 109.5 . . ? H8A C8 H8B 109.5 . . ? C5 C8 H8C 109.5 . . ? H8A C8 H8C 109.5 . . ? H8B C8 H8C 109.5 . . ? C14 C17 H17A 109.5 . . ? C14 C17 H17B 109.5 . . ? H17A C17 H17B 109.5 . . ? C14 C17 H17C 109.5 . . ? H17A C17 H17C 109.5 . . ? H17B C17 H17C 109.5 . . ? C3 O1 C2 117.52(13) . . ? O2 C3 O1 123.54(14) . . ? O2 C3 C4 124.82(14) . . ? O1 C3 C4 111.64(13) . . ? O1 C2 C1 106.42(15) . . ? O1 C2 H2A 110.4 . . ? C1 C2 H2A 110.4 . . ? O1 C2 H2B 110.4 . . ? C1 C2 H2B 110.4 . . ? H2A C2 H2B 108.6 . . ? C2 C1 H1A 109.5 . . ? C2 C1 H1B 109.5 . . ? H1A C1 H1B 109.5 . . ? C2 C1 H1C 109.5 . . ? H1A C1 H1C 109.5 . . ? H1B C1 H1C 109.5 . . ? H1WA O1W H1WB 104.9(12) . . ? 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 N1 C7 1.3551(18) . ? N1 C4 1.3638(18) . ? N1 H1 0.8600 . ? N2 C10 1.2744(19) . ? N2 N3 1.3714(17) . ? N3 C11 1.3606(19) . ? N3 H3 0.8600 . ? C11 O3 1.2320(17) . ? C11 C12 1.449(2) . ? N4 C15 1.346(2) . ? N4 C12 1.3689(19) . ? N4 H4 0.8600 . ? C7 C6 1.389(2) . ? C7 C10 1.443(2) . ? C12 C13 1.389(2) . ? C6 C5 1.407(2) . ? C6 C9 1.497(2) . ? C13 C14 1.410(2) . ? C13 C16 1.497(2) . ? C5 C4 1.395(2) . ? C5 C8 1.496(2) . ? C4 C3 1.453(2) . ? C14 C15 1.364(2) . ? C14 C17 1.502(2) . ? C10 H10 0.9300 . ? C15 H15 0.9300 . ? C16 H16A 0.9600 . ? C16 H16B 0.9600 . ? C16 H16C 0.9600 . ? C9 H9A 0.9600 . ? C9 H9B 0.9600 . ? C9 H9C 0.9600 . ? C8 H8A 0.9600 . ? C8 H8B 0.9600 . ? C8 H8C 0.9600 . ? C17 H17A 0.9600 . ? C17 H17B 0.9600 . ? C17 H17C 0.9600 . ? O1 C3 1.3362(18) . ? O1 C2 1.4466(19) . ? O2 C3 1.2060(19) . ? C2 C1 1.497(3) . ? C2 H2A 0.9700 . ? C2 H2B 0.9700 . ? C1 H1A 0.9600 . ? C1 H1B 0.9600 . ? C1 H1C 0.9600 . ? O1W H1WA 0.904(9) . ? O1W H1WB 0.897(9) . ? loop_ _geom_hbond_atom_site_label_D _geom_hbond_atom_site_label_H _geom_hbond_atom_site_label_A _geom_hbond_distance_DH _geom_hbond_distance_HA _geom_hbond_distance_DA _geom_hbond_angle_DHA _geom_hbond_site_symmetry_A N1 H1 O1W 0.86 2.11 2.9139(17) 155.5 2_556 O1W H1WA O3 0.904(9) 1.860(9) 2.7542(17) 170.0(19) . O1W H1WB O3 0.897(9) 2.217(13) 3.0403(16) 152.3(19) 2_556 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 C10 N2 N3 C11 178.16(13) . . . . ? N2 N3 C11 O3 1.4(2) . . . . ? N2 N3 C11 C12 -177.22(13) . . . . ? C4 N1 C7 C6 0.88(17) . . . . ? C4 N1 C7 C10 -177.13(13) . . . . ? C15 N4 C12 C13 -1.48(18) . . . . ? C15 N4 C12 C11 -178.49(13) . . . . ? O3 C11 C12 N4 16.1(2) . . . . ? N3 C11 C12 N4 -165.28(13) . . . . ? O3 C11 C12 C13 -159.88(17) . . . . ? N3 C11 C12 C13 18.7(3) . . . . ? N1 C7 C6 C5 -0.41(17) . . . . ? C10 C7 C6 C5 177.42(15) . . . . ? N1 C7 C6 C9 178.24(15) . . . . ? C10 C7 C6 C9 -3.9(3) . . . . ? N4 C12 C13 C14 1.46(17) . . . . ? C11 C12 C13 C14 177.76(16) . . . . ? N4 C12 C13 C16 -174.45(15) . . . . ? C11 C12 C13 C16 1.9(3) . . . . ? C7 C6 C5 C4 -0.19(16) . . . . ? C9 C6 C5 C4 -178.84(15) . . . . ? C7 C6 C5 C8 179.07(14) . . . . ? C9 C6 C5 C8 0.4(2) . . . . ? C7 N1 C4 C5 -1.00(16) . . . . ? C7 N1 C4 C3 176.22(13) . . . . ? C6 C5 C4 N1 0.72(16) . . . . ? C8 C5 C4 N1 -178.52(15) . . . . ? C6 C5 C4 C3 -175.94(16) . . . . ? C8 C5 C4 C3 4.8(3) . . . . ? C12 C13 C14 C15 -0.92(18) . . . . ? C16 C13 C14 C15 175.23(16) . . . . ? C12 C13 C14 C17 179.88(16) . . . . ? C16 C13 C14 C17 -4.0(3) . . . . ? N3 N2 C10 C7 176.92(13) . . . . ? N1 C7 C10 N2 -11.5(2) . . . . ? C6 C7 C10 N2 170.97(15) . . . . ? C12 N4 C15 C14 0.91(19) . . . . ? C13 C14 C15 N4 0.02(19) . . . . ? C17 C14 C15 N4 179.21(17) . . . . ? C2 O1 C3 O2 -0.3(2) . . . . ? C2 O1 C3 C4 179.35(13) . . . . ? N1 C4 C3 O2 6.4(2) . . . . ? C5 C4 C3 O2 -177.18(16) . . . . ? N1 C4 C3 O1 -173.17(12) . . . . ? C5 C4 C3 O1 3.2(2) . . . . ? C3 O1 C2 C1 173.76(14) . . . . ?