#------------------------------------------------------------------------------ #$Date: 2010-01-30 15:59:17 +0200 (Sat, 30 Jan 2010) $ #$Revision: 966 $ #$URL: file:///home/coder/svn-repositories/cod/cif/2/2015269.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_2015269 loop_ _publ_author_name 'Kenny Stahl' 'Jens E.T. Andersen' 'Stephan Christgau' _publ_section_title ; Strontium diibuprofenate dihydrate, strontium malonate sesquihydrate, strontium diascorbate dihydrate and strontium 2-oxidobenzoate hydrate at 120 K ; _journal_coeditor_code SK1898 _journal_issue 4 _journal_name_full 'Acta Crystallographica, Section C' _journal_page_first m144 _journal_page_last m149 _journal_volume 62 _journal_year 2006 _chemical_formula_iupac '[Sr (C13 H17 O2)2 (H2 O)2]' _chemical_formula_moiety 'Sr 2+, 2C13 H17 O2 -, 2H2 O' _chemical_formula_sum 'C26 H38 O6 Sr' _chemical_formula_weight 534.18 _chemical_name_common 'strontium ibuprofenate hydrate' _chemical_name_systematic ; poly[diaquabis[\m-2-(4-isobutylphenyl)propionato]strontium(II)] ; _symmetry_cell_setting triclinic _symmetry_space_group_name_Hall '-P 1' _symmetry_space_group_name_H-M 'P -1' _atom_sites_solution_hydrogens difmap _atom_sites_solution_primary direct _atom_sites_solution_secondary difmap _audit_creation_method SHELXL-97 _cell_angle_alpha 86.088(2) _cell_angle_beta 79.784(2) _cell_angle_gamma 70.605(2) _cell_formula_units_Z 2 _cell_length_a 7.9116(7) _cell_length_b 10.4870(10) _cell_length_c 18.2493(17) _cell_measurement_reflns_used 3382 _cell_measurement_temperature 120(2) _cell_measurement_theta_max 27.58 _cell_measurement_theta_min 2.34 _cell_volume 1405.5(2) _computing_cell_refinement 'SAINT-Plus (Bruker, 1999)' _computing_data_collection 'SMART (Bruker, 1999)' _computing_data_reduction 'SAINT-Plus and SADABS (Sheldrick, 2002)' _computing_molecular_graphics 'ORTEP-3 (Farrugia, 1997) and ATOMS (Dowty, 2000)' _computing_publication_material SHELXL97 _computing_structure_refinement 'SHELXL97 (Sheldrick, 1997)' _computing_structure_solution 'SHELXS97 (Sheldrick, 1997)' _diffrn_ambient_temperature 120(2) _diffrn_measured_fraction_theta_full 0.995 _diffrn_measured_fraction_theta_max 0.910 _diffrn_measurement_device_type 'Bruker SMART APEX diffractometer' _diffrn_measurement_method '\w scan, frame data integration' _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 0.0511 _diffrn_reflns_av_sigmaI/netI 0.0890 _diffrn_reflns_limit_h_max 11 _diffrn_reflns_limit_h_min -11 _diffrn_reflns_limit_k_max 14 _diffrn_reflns_limit_k_min -15 _diffrn_reflns_limit_l_max 26 _diffrn_reflns_limit_l_min -26 _diffrn_reflns_number 19139 _diffrn_reflns_theta_full 29.00 _diffrn_reflns_theta_max 31.01 _diffrn_reflns_theta_min 2.06 _diffrn_standards_decay_% 0 _diffrn_standards_interval_count 0 _diffrn_standards_interval_time 0 _diffrn_standards_number 0 _exptl_absorpt_coefficient_mu 1.952 _exptl_absorpt_correction_T_max 0.9438 _exptl_absorpt_correction_T_min 0.5482 _exptl_absorpt_correction_type multi-scan _exptl_absorpt_process_details ; (SADABS; Sheldrick, 2002) ; _exptl_crystal_colour colorless _exptl_crystal_density_diffrn 1.262 _exptl_crystal_density_method 'not measured' _exptl_crystal_description plate _exptl_crystal_F_000 560 _exptl_crystal_size_max 0.35 _exptl_crystal_size_mid 0.06 _exptl_crystal_size_min 0.03 _refine_diff_density_max 0.793 _refine_diff_density_min -0.439 _refine_ls_extinction_method none _refine_ls_goodness_of_fit_ref 0.982 _refine_ls_hydrogen_treatment mixed _refine_ls_matrix_type full _refine_ls_number_parameters 310 _refine_ls_number_reflns 8160 _refine_ls_number_restraints 4 _refine_ls_restrained_S_all 0.982 _refine_ls_R_factor_all 0.1116 _refine_ls_R_factor_gt 0.0581 _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^)+(0.0724P)^2^] where P=(Fo^2^+2Fc^2^)/3' _refine_ls_weighting_scheme calc _refine_ls_wR_factor_gt 0.1253 _refine_ls_wR_factor_ref 0.1450 _reflns_number_gt 5038 _reflns_number_total 8160 _reflns_threshold_expression I>2\s(I) _[local]_cod_data_source_file sk1898.cif loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, -y, -z' 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' O O 0.0106 0.0060 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' Sr Sr -1.5307 3.2498 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' loop_ _atom_site_type_symbol _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 Sr Sr1 0.76760(4) 0.44979(4) 0.012433(17) 0.03868(12) Uani d . 1 O O3 0.8918(3) 0.3797(3) 0.13485(14) 0.0453(6) Uani d D 1 H H31 0.976(4) 0.403(4) 0.139(2) 0.068 Uiso d D 1 H H32 0.819(5) 0.400(4) 0.1733(16) 0.068 Uiso d D 1 O O4 0.7381(3) 0.2360(3) -0.03646(15) 0.0476(6) Uani d D 1 H H41 0.641(4) 0.253(4) -0.049(2) 0.071 Uiso d D 1 H H42 0.815(5) 0.179(3) -0.065(2) 0.071 Uiso d D 1 O O11 0.5234(3) 0.5662(3) -0.08197(13) 0.0463(6) Uani d . 1 O O12 0.8107(3) 0.5425(3) -0.12268(13) 0.0464(6) Uani d . 1 C C11 0.5004(4) 0.5821(4) -0.24407(18) 0.0370(8) Uani d . 1 C C12 0.5251(4) 0.4451(4) -0.23561(19) 0.0405(8) Uani d . 1 H H12 0.5999 0.3940 -0.2029 0.049 Uiso calc R 1 C C13 0.4399(5) 0.3828(4) -0.27514(18) 0.0424(8) Uani d . 1 H H13 0.4583 0.2907 -0.2685 0.051 Uiso calc R 1 C C14 0.3282(5) 0.4564(4) -0.32417(18) 0.0417(8) Uani d . 1 C C15 0.3020(5) 0.5935(4) -0.33199(19) 0.0427(8) Uani d . 1 H H15 0.2263 0.6450 -0.3643 0.051 Uiso calc R 1 C C16 0.3874(5) 0.6554(4) -0.29224(18) 0.0405(8) Uani d . 1 H H16 0.3678 0.7477 -0.2983 0.049 Uiso calc R 1 C C17 0.6473(4) 0.5823(4) -0.13118(19) 0.0409(8) Uani d . 1 C C18 0.5944(6) 0.6549(4) -0.2032(2) 0.0534(10) Uani d . 1 H H18 0.5035 0.7425 -0.1884 0.064 Uiso calc R 1 C C19 0.7462(8) 0.6859(7) -0.2536(3) 0.110(2) Uani d . 1 H H19A 0.7035 0.7314 -0.2975 0.132 Uiso calc R 1 H H19B 0.8430 0.6032 -0.2673 0.132 Uiso calc R 1 H H19C 0.7899 0.7429 -0.2283 0.132 Uiso calc R 1 C C20 0.2412(7) 0.3893(5) -0.3721(2) 0.0651(12) Uani d . 1 H H20A 0.1134 0.4414 -0.3690 0.078 Uiso calc R 1 H H20B 0.2500 0.2994 -0.3526 0.078 Uiso calc R 1 C C21 0.3331(10) 0.3791(6) -0.4542(2) 0.094(2) Uani d . 1 H H21 0.3255 0.4706 -0.4724 0.113 Uiso calc R 1 C C22 0.2258(13) 0.3248(8) -0.4996(3) 0.177(5) Uani d . 1 H H22A 0.1013 0.3823 -0.4927 0.212 Uiso calc R 1 H H22B 0.2320 0.2348 -0.4830 0.212 Uiso calc R 1 H H22C 0.2773 0.3236 -0.5514 0.212 Uiso calc R 1 C C23 0.5376(11) 0.2925(6) -0.4625(3) 0.129(3) Uani d . 1 H H23A 0.5984 0.3328 -0.4345 0.155 Uiso calc R 1 H H23B 0.5917 0.2887 -0.5141 0.155 Uiso calc R 1 H H23C 0.5488 0.2027 -0.4439 0.155 Uiso calc R 1 O O31 0.8989(3) 0.6557(3) 0.02531(13) 0.0481(6) Uani d . 1 O O32 0.6074(3) 0.6942(3) 0.06225(14) 0.0490(6) Uani d . 1 C C31 0.8393(4) 0.8894(3) 0.12206(17) 0.0351(7) Uani d . 1 C C32 0.8892(5) 1.0051(4) 0.1233(2) 0.0446(8) Uani d . 1 H H32A 0.8533 1.0742 0.0888 0.053 Uiso calc R 1 C C33 0.9909(5) 1.0190(4) 0.1747(2) 0.0473(9) Uani d . 1 H H33 1.0230 1.0967 0.1742 0.057 Uiso calc R 1 C C34 1.0450(5) 0.9188(4) 0.22697(19) 0.0427(8) Uani d . 1 C C35 0.9992(5) 0.8025(3) 0.22540(18) 0.0390(8) Uani d . 1 H H35 1.0367 0.7334 0.2596 0.047 Uiso calc R 1 C C36 0.8985(4) 0.7874(3) 0.17374(18) 0.0367(7) Uani d . 1 H H36 0.8701 0.7082 0.1736 0.044 Uiso calc R 1 C C37 0.7435(4) 0.7334(4) 0.05112(18) 0.0414(8) Uani d . 1 C C38 0.7215(5) 0.8792(4) 0.0677(2) 0.0456(9) Uani d . 1 H H38 0.7601 0.9207 0.0207 0.055 Uiso calc R 1 C C39 0.5246(6) 0.9680(5) 0.0984(3) 0.0775(14) Uani d . 1 H H39A 0.4450 0.9646 0.0650 0.093 Uiso calc R 1 H H39B 0.5207 1.0597 0.1026 0.093 Uiso calc R 1 H H39C 0.4862 0.9346 0.1465 0.093 Uiso calc R 1 C C40 1.1434(6) 0.9389(4) 0.2874(2) 0.0555(10) Uani d . 1 H H40A 1.2437 0.9697 0.2647 0.067 Uiso calc R 1 H H40B 1.1934 0.8530 0.3119 0.067 Uiso calc R 1 C C41 1.0180(7) 1.0416(4) 0.3455(2) 0.0614(12) Uani d . 1 H H41A 0.9715 1.1280 0.3196 0.074 Uiso calc R 1 C C42 1.1266(9) 1.0630(5) 0.4018(3) 0.097(2) Uani d . 1 H H42A 1.2278 1.0883 0.3762 0.117 Uiso calc R 1 H H42B 1.1703 0.9807 0.4294 0.117 Uiso calc R 1 H H42C 1.0501 1.1335 0.4355 0.117 Uiso calc R 1 C C43 0.8562(7) 1.0009(5) 0.3824(3) 0.0766(14) Uani d . 1 H H43A 0.7930 0.9869 0.3449 0.092 Uiso calc R 1 H H43B 0.7757 1.0712 0.4152 0.092 Uiso calc R 1 H H43C 0.8973 0.9187 0.4103 0.092 Uiso calc R 1 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 Sr1 0.01726(14) 0.0745(3) 0.03160(17) -0.02246(14) -0.00314(11) -0.01354(14) O3 0.0255(12) 0.0823(18) 0.0360(13) -0.0290(13) -0.0001(10) -0.0079(12) O4 0.0209(12) 0.0727(18) 0.0510(16) -0.0147(12) -0.0039(11) -0.0207(13) O11 0.0240(11) 0.0844(18) 0.0376(13) -0.0274(12) -0.0026(10) -0.0062(12) O12 0.0225(11) 0.0815(17) 0.0426(14) -0.0266(12) -0.0022(10) -0.0100(12) C11 0.0260(16) 0.057(2) 0.0310(17) -0.0178(15) -0.0036(13) -0.0036(15) C12 0.0287(17) 0.055(2) 0.0346(18) -0.0092(15) -0.0039(14) -0.0028(15) C13 0.049(2) 0.045(2) 0.0319(18) -0.0161(17) -0.0018(16) -0.0070(15) C14 0.0418(19) 0.055(2) 0.0307(17) -0.0202(17) -0.0005(15) -0.0120(15) C15 0.0400(19) 0.055(2) 0.0328(18) -0.0115(17) -0.0107(15) -0.0060(15) C16 0.0417(19) 0.049(2) 0.0330(18) -0.0166(16) -0.0060(15) -0.0038(15) C17 0.0302(17) 0.067(2) 0.0358(18) -0.0283(17) -0.0047(14) -0.0099(16) C18 0.053(2) 0.082(3) 0.045(2) -0.045(2) -0.0154(18) 0.0029(19) C19 0.122(5) 0.202(7) 0.066(3) -0.128(5) -0.041(3) 0.040(4) C20 0.088(3) 0.076(3) 0.049(2) -0.044(3) -0.019(2) -0.011(2) C21 0.192(7) 0.086(4) 0.041(3) -0.085(4) -0.035(3) 0.003(2) C22 0.374(14) 0.180(7) 0.071(4) -0.193(9) -0.081(6) 0.002(4) C23 0.211(9) 0.091(4) 0.060(4) -0.042(5) 0.039(4) -0.025(3) O31 0.0209(11) 0.0852(18) 0.0431(14) -0.0214(12) -0.0013(10) -0.0241(12) O32 0.0204(11) 0.0809(18) 0.0507(15) -0.0218(11) -0.0019(10) -0.0183(13) C31 0.0254(15) 0.048(2) 0.0304(17) -0.0089(14) -0.0031(13) -0.0063(14) C32 0.044(2) 0.047(2) 0.041(2) -0.0104(17) -0.0129(16) -0.0009(16) C33 0.051(2) 0.046(2) 0.048(2) -0.0170(18) -0.0087(18) -0.0104(17) C34 0.0404(19) 0.052(2) 0.0380(19) -0.0139(16) -0.0101(16) -0.0137(16) C35 0.0383(18) 0.044(2) 0.0331(18) -0.0089(15) -0.0086(15) -0.0057(14) C36 0.0330(17) 0.0432(19) 0.0351(18) -0.0123(15) -0.0053(14) -0.0104(14) C37 0.0216(15) 0.075(2) 0.0291(17) -0.0141(16) -0.0081(13) -0.0092(16) C38 0.0303(17) 0.069(3) 0.039(2) -0.0159(17) -0.0148(15) 0.0052(17) C39 0.047(3) 0.091(3) 0.096(4) -0.015(2) -0.028(3) -0.014(3) C40 0.063(3) 0.059(2) 0.052(2) -0.020(2) -0.022(2) -0.0124(18) C41 0.089(3) 0.049(2) 0.050(2) -0.020(2) -0.025(2) -0.0102(18) C42 0.166(6) 0.087(4) 0.067(3) -0.058(4) -0.054(4) -0.011(3) C43 0.096(4) 0.078(3) 0.049(3) -0.024(3) 0.002(3) -0.017(2) 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 Sr1 O11 2_665 2.476(2) yes Sr1 O31 2_765 2.486(2) yes Sr1 O3 . 2.563(3) yes Sr1 O4 . 2.563(3) yes Sr1 O12 . 2.595(2) yes Sr1 O32 . 2.599(3) yes Sr1 O31 . 2.728(2) yes Sr1 O11 . 2.742(2) yes O3 H31 . 0.804(18) no O3 H32 . 0.815(19) no O4 H41 . 0.798(19) no O4 H42 . 0.829(19) no O11 C17 . 1.254(4) no O12 C17 . 1.254(4) no C11 C16 . 1.376(5) no C11 C12 . 1.386(5) no C11 C18 . 1.531(5) no C12 C13 . 1.390(5) no C12 H12 . 0.9300 no C13 C14 . 1.382(5) no C13 H13 . 0.9300 no C14 C15 . 1.385(5) no C14 C20 . 1.533(5) no C15 C16 . 1.390(5) no C15 H15 . 0.9300 no C16 H16 . 0.9300 no C17 C18 . 1.527(5) no C18 C19 . 1.489(6) no C18 H18 . 0.9800 no C19 H19A . 0.9600 no C19 H19B . 0.9600 no C19 H19C . 0.9600 no C20 C21 . 1.540(6) no C20 H20A . 0.9700 no C20 H20B . 0.9700 no C21 C22 . 1.537(7) no C21 C23 . 1.556(9) no C21 H21 . 0.9800 no C22 H22A . 0.9600 no C22 H22B . 0.9600 no C22 H22C . 0.9600 no C23 H23A . 0.9600 no C23 H23B . 0.9600 no C23 H23C . 0.9600 no O31 C37 . 1.257(4) no O32 C37 . 1.255(4) no C31 C36 . 1.393(5) no C31 C32 . 1.397(5) no C31 C38 . 1.508(4) no C32 C33 . 1.384(5) no C32 H32A . 0.9300 no C33 C34 . 1.380(5) no C33 H33 . 0.9300 no C34 C35 . 1.386(5) no C34 C40 . 1.520(5) no C35 C36 . 1.385(4) no C35 H35 . 0.9300 no C36 H36 . 0.9300 no C37 C38 . 1.526(5) no C38 C39 . 1.551(6) no C38 H38 . 0.9800 no C39 H39A . 0.9600 no C39 H39B . 0.9600 no C39 H39C . 0.9600 no C40 C41 . 1.530(6) no C40 H40A . 0.9700 no C40 H40B . 0.9700 no C41 C43 . 1.514(6) no C41 C42 . 1.523(6) no C41 H41A . 0.9800 no C42 H42A . 0.9600 no C42 H42B . 0.9600 no C42 H42C . 0.9600 no C43 H43A . 0.9600 no C43 H43B . 0.9600 no C43 H43C . 0.9600 no loop_ _geom_angle_atom_site_label_1 _geom_angle_atom_site_label_2 _geom_angle_atom_site_label_3 _geom_angle _geom_angle_publ_flag H31 O3 H32 107(4) no H41 O4 H42 109(4) no C16 C11 C12 118.1(3) no C16 C11 C18 118.7(3) no C12 C11 C18 123.2(3) no C11 C12 C13 121.1(3) no C11 C12 H12 119.4 no C13 C12 H12 119.4 no C14 C13 C12 120.6(3) no C14 C13 H13 119.7 no C12 C13 H13 119.7 no C13 C14 C15 118.2(3) no C13 C14 C20 121.9(3) no C15 C14 C20 119.8(3) no C14 C15 C16 120.9(3) no C14 C15 H15 119.5 no C16 C15 H15 119.5 no C11 C16 C15 121.0(3) no C11 C16 H16 119.5 no C15 C16 H16 119.5 no O11 C17 O12 122.4(3) no O11 C17 C18 118.0(3) no O12 C17 C18 119.6(3) no C19 C18 C17 113.9(3) no C19 C18 C11 111.8(3) no C17 C18 C11 112.3(3) no C19 C18 H18 106.0 no C17 C18 H18 106.0 no C11 C18 H18 106.0 no C18 C19 H19A 109.5 no C18 C19 H19B 109.5 no H19A C19 H19B 109.5 no C18 C19 H19C 109.5 no H19A C19 H19C 109.5 no H19B C19 H19C 109.5 no C14 C20 C21 112.2(4) no C14 C20 H20A 109.2 no C21 C20 H20A 109.2 no C14 C20 H20B 109.2 no C21 C20 H20B 109.2 no H20A C20 H20B 107.9 no C22 C21 C20 108.8(5) no C22 C21 C23 113.1(6) no C20 C21 C23 111.2(4) no C22 C21 H21 107.8 no C20 C21 H21 107.8 no C23 C21 H21 107.8 no C21 C22 H22A 109.5 no C21 C22 H22B 109.5 no H22A C22 H22B 109.5 no C21 C22 H22C 109.5 no H22A C22 H22C 109.5 no H22B C22 H22C 109.5 no C21 C23 H23A 109.5 no C21 C23 H23B 109.5 no H23A C23 H23B 109.5 no C21 C23 H23C 109.5 no H23A C23 H23C 109.5 no H23B C23 H23C 109.5 no C36 C31 C32 117.5(3) no C36 C31 C38 122.1(3) no C32 C31 C38 120.3(3) no C33 C32 C31 121.3(3) no C33 C32 H32A 119.3 no C31 C32 H32A 119.3 no C34 C33 C32 120.7(3) no C34 C33 H33 119.6 no C32 C33 H33 119.6 no C33 C34 C35 118.4(3) no C33 C34 C40 120.7(3) no C35 C34 C40 120.8(3) no C36 C35 C34 121.2(3) no C36 C35 H35 119.4 no C34 C35 H35 119.4 no C35 C36 C31 120.8(3) no C35 C36 H36 119.6 no C31 C36 H36 119.6 no O32 C37 O31 121.5(3) no O32 C37 C38 119.9(3) no O31 C37 C38 118.6(3) no C31 C38 C37 112.8(3) no C31 C38 C39 106.8(3) no C37 C38 C39 114.9(3) no C31 C38 H38 107.3 no C37 C38 H38 107.3 no C39 C38 H38 107.3 no C38 C39 H39A 109.5 no C38 C39 H39B 109.5 no H39A C39 H39B 109.5 no C38 C39 H39C 109.5 no H39A C39 H39C 109.5 no H39B C39 H39C 109.5 no C34 C40 C41 112.3(3) no C34 C40 H40A 109.2 no C41 C40 H40A 109.2 no C34 C40 H40B 109.2 no C41 C40 H40B 109.2 no H40A C40 H40B 107.9 no C43 C41 C42 112.2(4) no C43 C41 C40 111.9(3) no C42 C41 C40 109.7(4) no C43 C41 H41A 107.6 no C42 C41 H41A 107.6 no C40 C41 H41A 107.6 no C41 C42 H42A 109.5 no C41 C42 H42B 109.5 no H42A C42 H42B 109.5 no C41 C42 H42C 109.5 no H42A C42 H42C 109.5 no H42B C42 H42C 109.5 no C41 C43 H43A 109.5 no C41 C43 H43B 109.5 no H43A C43 H43B 109.5 no C41 C43 H43C 109.5 no H43A C43 H43C 109.5 no H43B C43 H43C 109.5 no 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 O3 H31 O12 2_765 0.804(18) 1.92(2) 2.706(3) 165(4) O4 H41 O32 2_665 0.798(19) 1.91(2) 2.704(3) 171(5) _cod_database_code 2015269