#------------------------------------------------------------------------------ #$Date: 2011-09-10 04:16:28 +0100 (Sat, 10 Sep 2011) $ #$Revision: 25271 $ #$URL: svn://www.crystallography.net/cod/cif/2/2202352.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_2202352 loop_ _publ_author_name 'Clegg, William' 'Horsburgh, Lynne' _publ_section_title ; trans-(6-Amino-2-pyridinio)iodobis(triphenylphosphine)palladium(II) iodide ethyl acetate solvate ; _journal_issue 9 _journal_name_full 'Acta Crystallographica Section E' _journal_page_first m700 _journal_page_last m702 _journal_volume 59 _journal_year 2003 _chemical_formula_iupac '[Pd (C5 H6 N2) (C18 H15 P}2] I, C4 H8 O2' _chemical_formula_moiety 'C41 H36 I N2 P2 Pd 1+, I 1-, C4 H8 O2' _chemical_formula_sum 'C45 H44 I2 N2 O2 P2 Pd' _chemical_formula_weight 1066.96 _chemical_name_systematic ; trans-(6-amino-2-pyridinio)iodobis(triphenylphosphine)palladium(II) iodide ethyl acetate solvate ; _space_group_IT_number 36 _symmetry_cell_setting orthorhombic _symmetry_space_group_name_Hall 'C 2c -2' _symmetry_space_group_name_H-M 'C m c 21' _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 90.00 _cell_angle_gamma 90.00 _cell_formula_units_Z 4 _cell_length_a 15.0297(9) _cell_length_b 16.9603(10) _cell_length_c 17.2897(11) _cell_measurement_reflns_used 13025 _cell_measurement_temperature 160(2) _cell_measurement_theta_max 28.8 _cell_measurement_theta_min 2.2 _cell_volume 4407.3(5) _computing_cell_refinement 'local programs' _computing_data_collection 'SMART (Bruker, 2001)' _computing_data_reduction 'SAINT (Bruker, 2001)' _computing_molecular_graphics SHELXTL _computing_publication_material 'SHELXTL and local programs' _computing_structure_refinement SHELXTL _computing_structure_solution 'SHELXTL (Sheldrick, 2001)' _diffrn_ambient_temperature 160(2) _diffrn_detector_area_resol_mean 8.192 _diffrn_measured_fraction_theta_full 0.999 _diffrn_measured_fraction_theta_max 0.942 _diffrn_measurement_device_type 'Bruker SMART 1K CCD' _diffrn_measurement_method 'narrow-frame \w' _diffrn_radiation_monochromator graphite _diffrn_radiation_source 'sealed tube' _diffrn_radiation_type MoK\a _diffrn_radiation_wavelength 0.71073 _diffrn_reflns_av_R_equivalents 0.0297 _diffrn_reflns_av_sigmaI/netI 0.0348 _diffrn_reflns_limit_h_max 19 _diffrn_reflns_limit_h_min -19 _diffrn_reflns_limit_k_max 17 _diffrn_reflns_limit_k_min -22 _diffrn_reflns_limit_l_max 19 _diffrn_reflns_limit_l_min -23 _diffrn_reflns_number 14181 _diffrn_reflns_theta_full 26.00 _diffrn_reflns_theta_max 28.80 _diffrn_reflns_theta_min 1.81 _diffrn_standards_number 0 _exptl_absorpt_coefficient_mu 1.932 _exptl_absorpt_correction_T_max 0.824 _exptl_absorpt_correction_T_min 0.600 _exptl_absorpt_correction_type multi-scan _exptl_absorpt_process_details '(SADABS; Sheldrick, 2002)' _exptl_crystal_colour 'pale yellow' _exptl_crystal_density_diffrn 1.608 _exptl_crystal_density_method 'not measured' _exptl_crystal_description plate _exptl_crystal_F_000 2104 _exptl_crystal_size_max 0.40 _exptl_crystal_size_mid 0.21 _exptl_crystal_size_min 0.10 _refine_diff_density_max 1.280 _refine_diff_density_min -0.705 _refine_ls_abs_structure_details 'Flack (1983); 2220 Friedel pairs' _refine_ls_abs_structure_Flack -0.005(16) _refine_ls_extinction_method none _refine_ls_goodness_of_fit_ref 1.035 _refine_ls_hydrogen_treatment constr _refine_ls_matrix_type full _refine_ls_number_parameters 270 _refine_ls_number_reflns 5016 _refine_ls_number_restraints 1 _refine_ls_restrained_S_all 1.035 _refine_ls_R_factor_all 0.0271 _refine_ls_R_factor_gt 0.0255 _refine_ls_shift/su_max 0.001 _refine_ls_shift/su_mean 0.000 _refine_ls_structure_factor_coef Fsqd _refine_ls_weighting_details 'w = 1/[\s^2^(Fo^2^)+(0.0393P)^2^+0.905P] where P = (Fo^2^+2Fc^2^)/3' _refine_ls_weighting_scheme calc _refine_ls_wR_factor_gt 0.0651 _refine_ls_wR_factor_ref 0.0658 _reflns_number_gt 4828 _reflns_number_total 5016 _reflns_threshold_expression I>2\s(I) _[local]_cod_data_source_file bt6322.cif _[local]_cod_data_source_block I _cod_database_code 2202352 loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, -y, z+1/2' 'x, -y, z+1/2' '-x, y, z' 'x+1/2, y+1/2, z' '-x+1/2, -y+1/2, z+1/2' 'x+1/2, -y+1/2, z+1/2' '-x+1/2, y+1/2, 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_type_symbol Pd1 0.5000 0.278578(18) 0.282560(19) 0.01377(7) Uani d S 1 Pd I1 0.5000 0.420395(18) 0.21713(2) 0.02785(9) Uani d S 1 I C1 0.5000 0.1796(3) 0.3462(3) 0.0177(9) Uani d S 1 C N1 0.5000 0.1095(2) 0.3084(2) 0.0209(8) Uani d S 1 N H1 0.5000 0.1114 0.2576 0.025 Uiso calc SR 1 H C2 0.5000 0.0360(3) 0.3416(3) 0.0279(11) Uani d S 1 C N2 0.5000 -0.0265(3) 0.2959(3) 0.0354(11) Uani d S 1 N H2A 0.5000 -0.0204 0.2454 0.042 Uiso calc SR 1 H H2B 0.5000 -0.0741 0.3161 0.042 Uiso calc SR 1 H C3 0.5000 0.0335(3) 0.4235(3) 0.0304(12) Uani d S 1 C H3 0.5000 -0.0158 0.4496 0.036 Uiso calc SR 1 H C4 0.5000 0.1024(3) 0.4646(3) 0.0310(13) Uani d S 1 C H4 0.5000 0.1006 0.5195 0.037 Uiso calc SR 1 H C5 0.5000 0.1769(3) 0.4264(3) 0.0240(10) Uani d S 1 C H5 0.5000 0.2243 0.4556 0.029 Uiso calc SR 1 H P1 0.65508(4) 0.27780(4) 0.28541(5) 0.01498(14) Uani d . 1 P C6 0.7082(2) 0.32603(18) 0.20310(19) 0.0169(6) Uani d . 1 C C7 0.7793(2) 0.3781(2) 0.2112(2) 0.0250(7) Uani d . 1 C H7 0.8013 0.3910 0.2611 0.030 Uiso calc R 1 H C8 0.8176(3) 0.4111(2) 0.1457(3) 0.0318(9) Uani d . 1 C H8 0.8648 0.4479 0.1511 0.038 Uiso calc R 1 H C9 0.7880(3) 0.3910(2) 0.0725(2) 0.0282(8) Uani d . 1 C H9 0.8154 0.4134 0.0281 0.034 Uiso calc R 1 H C10 0.7193(3) 0.3389(2) 0.0645(2) 0.0286(8) Uani d . 1 C H10 0.6997 0.3245 0.0142 0.034 Uiso calc R 1 H C11 0.6778(2) 0.3068(2) 0.1291(2) 0.0242(7) Uani d . 1 C H11 0.6289 0.2718 0.1229 0.029 Uiso calc R 1 H C12 0.6957(2) 0.32586(19) 0.3731(2) 0.0189(7) Uani d . 1 C C13 0.6376(2) 0.3692(2) 0.4194(2) 0.0252(7) Uani d . 1 C H13 0.5772 0.3752 0.4042 0.030 Uiso calc R 1 H C14 0.6676(3) 0.4039(2) 0.4878(2) 0.0307(8) Uani d . 1 C H14 0.6274 0.4322 0.5200 0.037 Uiso calc R 1 H C15 0.7567(3) 0.3967(2) 0.5087(2) 0.0341(9) Uani d . 1 C H15 0.7776 0.4210 0.5548 0.041 Uiso calc R 1 H C16 0.8155(3) 0.3540(2) 0.4626(2) 0.0314(8) Uani d . 1 C H16 0.8761 0.3490 0.4773 0.038 Uiso calc R 1 H C17 0.7853(2) 0.3189(2) 0.3949(2) 0.0261(7) Uani d . 1 C H17 0.8254 0.2899 0.3634 0.031 Uiso calc R 1 H C18 0.71207(19) 0.18245(18) 0.2894(2) 0.0176(6) Uani d . 1 C C19 0.7548(2) 0.1507(2) 0.2255(2) 0.0293(8) Uani d . 1 C H19 0.7531 0.1778 0.1775 0.035 Uiso calc R 1 H C20 0.8002(3) 0.0797(2) 0.2313(3) 0.0377(10) Uani d . 1 C H20 0.8304 0.0589 0.1875 0.045 Uiso calc R 1 H C21 0.8013(3) 0.0394(2) 0.3002(2) 0.0334(9) Uani d . 1 C H21 0.8328 -0.0090 0.3041 0.040 Uiso calc R 1 H C22 0.7570(3) 0.0690(2) 0.3638(2) 0.0297(8) Uani d . 1 C H22 0.7571 0.0405 0.4111 0.036 Uiso calc R 1 H C23 0.7125(2) 0.1402(2) 0.3585(2) 0.0236(7) Uani d . 1 C H23 0.6819 0.1605 0.4023 0.028 Uiso calc R 1 H I2 0.5000 0.09769(2) 0.11255(2) 0.03015(9) Uani d S 1 I C24 0.5000 -0.2651(8) 0.2157(9) 0.120(6) Uani d S 1 C H24A 0.4633 -0.2223 0.1947 0.180 Uiso calc PR 0.50 H H24B 0.4756 -0.3159 0.1991 0.180 Uiso calc PR 0.50 H H24C 0.5611 -0.2597 0.1965 0.180 Uiso calc PR 0.50 H C25 0.5000 -0.2605(5) 0.3083(8) 0.080(4) Uani d S 1 C O1 0.5000 -0.1948(3) 0.3390(4) 0.0605(15) Uani d S 1 O O2 0.5000 -0.3250(4) 0.3347(7) 0.111(3) Uani d S 1 O C26 0.5000 -0.3210(6) 0.4186(7) 0.069(3) Uani d S 1 C H26A 0.4466 -0.2924 0.4369 0.083 Uiso calc PR 0.50 H H26B 0.5534 -0.2924 0.4369 0.083 Uiso calc PR 0.50 H C27 0.5000 -0.4071(6) 0.4510(10) 0.101(4) Uani d S 1 C H27A 0.4812 -0.4065 0.5052 0.152 Uiso calc PR 0.50 H H27B 0.5601 -0.4292 0.4471 0.152 Uiso calc PR 0.50 H H27C 0.4587 -0.4395 0.4208 0.152 Uiso calc PR 0.50 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 Pd1 0.01199(13) 0.01359(15) 0.01575(16) 0.000 0.000 0.00026(12) I1 0.02021(15) 0.01820(14) 0.0452(2) 0.000 0.000 0.00699(14) C1 0.0101(18) 0.021(2) 0.022(2) 0.000 0.000 0.0016(17) N1 0.025(2) 0.021(2) 0.016(2) 0.000 0.000 0.0053(15) C2 0.028(3) 0.019(2) 0.037(3) 0.000 0.000 0.010(2) N2 0.058(3) 0.021(2) 0.027(3) 0.000 0.000 0.0026(19) C3 0.025(3) 0.031(3) 0.036(3) 0.000 0.000 0.016(2) C4 0.027(3) 0.044(3) 0.022(3) 0.000 0.000 0.017(2) C5 0.025(2) 0.032(3) 0.015(2) 0.000 0.000 0.0048(19) P1 0.0124(3) 0.0171(3) 0.0154(4) 0.0000(3) -0.0001(3) 0.0003(3) C6 0.0161(14) 0.0191(15) 0.0155(17) 0.0015(11) 0.0018(11) 0.0002(12) C7 0.0232(15) 0.0276(16) 0.0243(17) -0.0055(13) -0.0003(14) 0.0021(15) C8 0.0251(18) 0.039(2) 0.031(2) -0.0112(15) 0.0031(15) 0.0067(16) C9 0.0280(19) 0.032(2) 0.025(2) 0.0011(15) 0.0055(15) 0.0072(15) C10 0.037(2) 0.034(2) 0.0151(17) -0.0003(16) 0.0014(15) 0.0004(14) C11 0.0229(17) 0.0267(18) 0.023(2) -0.0034(13) -0.0003(13) 0.0020(13) C12 0.0203(15) 0.0173(15) 0.0191(17) -0.0049(12) -0.0015(12) 0.0018(12) C13 0.0239(17) 0.0264(17) 0.0254(19) -0.0030(14) 0.0005(13) -0.0024(14) C14 0.041(2) 0.0295(19) 0.022(2) -0.0033(16) 0.0049(16) -0.0057(14) C15 0.053(3) 0.032(2) 0.0179(19) -0.0134(17) -0.0102(17) 0.0021(14) C16 0.034(2) 0.0325(19) 0.028(2) -0.0069(15) -0.0129(16) 0.0045(16) C17 0.0224(16) 0.0245(18) 0.031(2) -0.0009(13) -0.0051(15) 0.0015(14) C18 0.0141(13) 0.0160(14) 0.0228(17) 0.0012(11) 0.0004(13) -0.0006(13) C19 0.042(2) 0.0287(18) 0.0176(18) 0.0089(15) -0.0002(14) -0.0009(16) C20 0.057(3) 0.0292(19) 0.027(2) 0.0159(17) 0.0068(19) -0.0036(15) C21 0.041(2) 0.0219(18) 0.037(3) 0.0111(15) -0.0027(16) 0.0018(15) C22 0.036(2) 0.0235(19) 0.029(2) 0.0057(15) 0.0010(16) 0.0078(15) C23 0.0207(15) 0.0268(17) 0.0232(17) 0.0054(13) 0.0029(13) 0.0051(14) I2 0.02745(17) 0.0432(2) 0.01984(17) 0.000 0.000 0.00002(15) C24 0.057(6) 0.130(10) 0.173(15) 0.000 0.000 -0.078(11) C25 0.022(3) 0.046(5) 0.172(12) 0.000 0.000 0.025(6) O1 0.040(3) 0.035(3) 0.106(5) 0.000 0.000 0.021(3) O2 0.051(4) 0.059(4) 0.224(12) 0.000 0.000 -0.005(5) C26 0.055(5) 0.069(6) 0.084(7) 0.000 0.000 0.034(5) C27 0.087(8) 0.073(7) 0.143(12) 0.000 0.000 0.035(7) loop_ _atom_type_symbol _atom_type_description _atom_type_scat_dispersion_real _atom_type_scat_dispersion_imag _atom_type_scat_source C C 0.0033 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' P P 0.1023 0.0942 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' Pd Pd -0.9988 1.0072 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' I I -0.4742 1.8119 '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_3 _geom_angle _geom_angle_publ_flag I1 Pd1 C1 . 171.95(14) yes I1 Pd1 P1 . 90.81(2) yes I1 Pd1 P1 4_655 90.81(2) ? C1 Pd1 P1 . 89.06(2) yes C1 Pd1 P1 4_655 89.06(2) ? P1 Pd1 P1 4_655 177.49(5) yes Pd1 C1 N1 . 118.0(3) ? Pd1 C1 C5 . 125.2(4) ? N1 C1 C5 . 116.8(4) ? C1 N1 H1 . 116.7 ? C1 N1 C2 . 126.6(4) ? H1 N1 C2 . 116.7 ? N1 C2 N2 . 118.6(5) ? N1 C2 C3 . 116.5(5) ? N2 C2 C3 . 124.9(5) ? C2 N2 H2A . 120.0 ? C2 N2 H2B . 120.0 ? H2A N2 H2B . 120.0 ? C2 C3 H3 . 120.2 ? C2 C3 C4 . 119.5(5) ? H3 C3 C4 . 120.2 ? C3 C4 H4 . 119.5 ? C3 C4 C5 . 121.1(5) ? H4 C4 C5 . 119.5 ? C1 C5 C4 . 119.6(5) ? C1 C5 H5 . 120.2 ? C4 C5 H5 . 120.2 ? Pd1 P1 C6 . 114.73(10) ? Pd1 P1 C12 . 110.45(11) ? Pd1 P1 C18 . 118.26(10) ? C6 P1 C12 . 107.51(14) ? C6 P1 C18 . 102.71(15) ? C12 P1 C18 . 101.94(16) ? P1 C6 C7 . 122.8(3) ? P1 C6 C11 . 117.8(2) ? C7 C6 C11 . 119.4(3) ? C6 C7 H7 . 120.3 ? C6 C7 C8 . 119.4(3) ? H7 C7 C8 . 120.3 ? C7 C8 H8 . 119.5 ? C7 C8 C9 . 120.9(3) ? H8 C8 C9 . 119.5 ? C8 C9 H9 . 120.2 ? C8 C9 C10 . 119.7(3) ? H9 C9 C10 . 120.2 ? C9 C10 H10 . 119.6 ? C9 C10 C11 . 120.7(4) ? H10 C10 C11 . 119.6 ? C6 C11 C10 . 119.8(3) ? C6 C11 H11 . 120.1 ? C10 C11 H11 . 120.1 ? P1 C12 C13 . 120.1(2) ? P1 C12 C17 . 120.4(3) ? C13 C12 C17 . 119.4(3) ? C12 C13 H13 . 119.8 ? C12 C13 C14 . 120.4(3) ? H13 C13 C14 . 119.8 ? C13 C14 H14 . 120.2 ? C13 C14 C15 . 119.5(4) ? H14 C14 C15 . 120.2 ? C14 C15 H15 . 119.8 ? C14 C15 C16 . 120.5(4) ? H15 C15 C16 . 119.8 ? C15 C16 H16 . 120.1 ? C15 C16 C17 . 119.9(4) ? H16 C16 C17 . 120.1 ? C12 C17 C16 . 120.3(3) ? C12 C17 H17 . 119.9 ? C16 C17 H17 . 119.9 ? P1 C18 C19 . 122.0(3) ? P1 C18 C23 . 119.2(3) ? C19 C18 C23 . 118.8(3) ? C18 C19 H19 . 119.7 ? C18 C19 C20 . 120.5(4) ? H19 C19 C20 . 119.7 ? C19 C20 H20 . 120.0 ? C19 C20 C21 . 120.0(4) ? H20 C20 C21 . 120.0 ? C20 C21 H21 . 119.9 ? C20 C21 C22 . 120.3(3) ? H21 C21 C22 . 119.9 ? C21 C22 H22 . 120.1 ? C21 C22 C23 . 119.9(3) ? H22 C22 C23 . 120.1 ? C18 C23 C22 . 120.5(3) ? C18 C23 H23 . 119.8 ? C22 C23 H23 . 119.8 ? H24A C24 H24B . 109.5 ? H24A C24 H24C . 109.5 ? H24A C24 C25 . 109.5 ? H24B C24 H24C . 109.5 ? H24B C24 C25 . 109.5 ? H24C C24 C25 . 109.5 ? C24 C25 O1 . 118.3(9) ? C24 C25 O2 . 109.9(12) ? O1 C25 O2 . 131.8(14) ? C25 O2 C26 . 110.0(10) ? O2 C26 H26A . 110.0 ? O2 C26 H26B . 110.0 ? O2 C26 C27 . 108.3(10) ? H26A C26 H26B . 108.4 ? H26A C26 C27 . 110.0 ? H26B C26 C27 . 110.0 ? C26 C27 H27A . 109.5 ? C26 C27 H27B . 109.5 ? C26 C27 H27C . 109.5 ? H27A C27 H27B . 109.5 ? H27A C27 H27C . 109.5 ? H27B C27 H27C . 109.5 ? 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 Pd1 I1 . 2.6580(5) yes Pd1 C1 . 2.006(4) yes Pd1 P1 . 2.3313(7) yes Pd1 P1 4_655 2.3313(7) ? C1 N1 . 1.356(6) ? C1 C5 . 1.388(7) ? N1 H1 . 0.880 ? N1 C2 . 1.372(6) ? C2 N2 . 1.322(7) ? C2 C3 . 1.416(8) ? N2 H2A . 0.880 ? N2 H2B . 0.880 ? C3 H3 . 0.950 ? C3 C4 . 1.369(9) ? C4 H4 . 0.950 ? C4 C5 . 1.425(7) ? C5 H5 . 0.950 ? P1 C6 . 1.825(3) ? P1 C12 . 1.826(3) ? P1 C18 . 1.831(3) ? C6 C7 . 1.393(4) ? C6 C11 . 1.398(5) ? C7 H7 . 0.950 ? C7 C8 . 1.389(5) ? C8 H8 . 0.950 ? C8 C9 . 1.382(6) ? C9 H9 . 0.950 ? C9 C10 . 1.367(5) ? C10 H10 . 0.950 ? C10 C11 . 1.391(5) ? C11 H11 . 0.950 ? C12 C13 . 1.395(5) ? C12 C17 . 1.403(5) ? C13 H13 . 0.950 ? C13 C14 . 1.397(5) ? C14 H14 . 0.950 ? C14 C15 . 1.394(6) ? C15 H15 . 0.950 ? C15 C16 . 1.393(6) ? C16 H16 . 0.950 ? C16 C17 . 1.389(5) ? C17 H17 . 0.950 ? C18 C19 . 1.385(5) ? C18 C23 . 1.394(5) ? C19 H19 . 0.950 ? C19 C20 . 1.388(5) ? C20 H20 . 0.950 ? C20 C21 . 1.373(6) ? C21 H21 . 0.950 ? C21 C22 . 1.381(5) ? C22 H22 . 0.950 ? C22 C23 . 1.384(5) ? C23 H23 . 0.950 ? C24 H24A . 0.980 ? C24 H24B . 0.980 ? C24 H24C . 0.980 ? C24 C25 . 1.603(18) ? C25 O1 . 1.236(12) ? C25 O2 . 1.185(12) ? O2 C26 . 1.453(14) ? C26 H26A . 0.990 ? C26 H26B . 0.990 ? C26 C27 . 1.564(13) ? C27 H27A . 0.980 ? C27 H27B . 0.980 ? C27 H27C . 0.980 ? 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_publ_flag N1 H1 I2 0.88 2.52 3.393(4) 173 yes N2 H2A I2 0.88 3.05 3.806(5) 146 yes N2 H2B O1 0.88 2.08 2.950(6) 168 yes