#------------------------------------------------------------------------------ #$Date: 2016-03-23 23:05:24 +0200 (Wed, 23 Mar 2016) $ #$Revision: 179501 $ #$URL: file:///home/coder/svn-repositories/cod/cif/4/33/98/4339894.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_4339894 loop_ _publ_author_name 'Benson, Mark A.' 'Zacchini, Stefano' 'Boomishankar, Ramamoorthy' 'Chan, Yuri' 'Steiner, Alexander' _publ_section_title ; Alkylation and acylation of cyclotriphosphazenes. ; _journal_issue 17 _journal_name_full 'Inorganic chemistry' _journal_page_first 7097 _journal_page_last 7108 _journal_paper_doi 10.1021/ic7009463 _journal_volume 46 _journal_year 2007 _chemical_formula_sum 'C25 H63 N10 O3 P3' _chemical_formula_weight 644.76 _chemical_name_systematic ; ? ; _space_group_IT_number 2 _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 _cell_angle_alpha 77.702(4) _cell_angle_beta 73.267(4) _cell_angle_gamma 74.620(4) _cell_formula_units_Z 2 _cell_length_a 9.9751(17) _cell_length_b 11.719(2) _cell_length_c 16.369(3) _cell_measurement_temperature 100(2) _cell_volume 1747.4(5) _computing_structure_refinement 'SHELXL-97 (Sheldrick, 1997)' _computing_structure_solution 'SHELXS-97 (Sheldrick, 1990)' _diffrn_ambient_temperature 100(2) _diffrn_measured_fraction_theta_full 0.978 _diffrn_measured_fraction_theta_max 0.978 _diffrn_measurement_device_type 'Bruker Smart Apex' _diffrn_measurement_method 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 0.0000 _diffrn_reflns_av_sigmaI/netI 0.0820 _diffrn_reflns_limit_h_max 10 _diffrn_reflns_limit_h_min -10 _diffrn_reflns_limit_k_max 12 _diffrn_reflns_limit_k_min -12 _diffrn_reflns_limit_l_max 17 _diffrn_reflns_limit_l_min 0 _diffrn_reflns_number 4644 _diffrn_reflns_theta_full 22.49 _diffrn_reflns_theta_max 22.49 _diffrn_reflns_theta_min 4.09 _exptl_absorpt_coefficient_mu 0.212 _exptl_absorpt_correction_T_max 1.000 _exptl_absorpt_correction_T_min 0.397 _exptl_absorpt_correction_type empirical _exptl_absorpt_process_details SADABS _exptl_crystal_colour colourless _exptl_crystal_density_diffrn 1.225 _exptl_crystal_density_method 'not measured' _exptl_crystal_description plate _exptl_crystal_F_000 704 _exptl_crystal_size_max 0.3 _exptl_crystal_size_mid 0.3 _exptl_crystal_size_min 0.1 _refine_diff_density_max 0.409 _refine_diff_density_min -0.380 _refine_diff_density_rms 0.068 _refine_ls_extinction_method none _refine_ls_goodness_of_fit_ref 0.965 _refine_ls_hydrogen_treatment mixed _refine_ls_matrix_type full _refine_ls_number_parameters 390 _refine_ls_number_reflns 4644 _refine_ls_number_restraints 15 _refine_ls_restrained_S_all 0.964 _refine_ls_R_factor_all 0.0813 _refine_ls_R_factor_gt 0.0546 _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^)+(0.0760P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3' _refine_ls_weighting_scheme calc _refine_ls_wR_factor_gt 0.1282 _refine_ls_wR_factor_ref 0.1367 _reflns_number_gt 3200 _reflns_number_total 4644 _reflns_threshold_expression >2sigma(I) _cod_data_source_file ic7009463-file003.cif _cod_data_source_block '[5Me]NO3' _cod_database_code 4339894 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 P1 P 0.76240(11) 0.66256(10) 0.20466(7) 0.0193(3) Uani 1 1 d . P2 P 0.69178(11) 0.92527(10) 0.20334(7) 0.0194(3) Uani 1 1 d . P3 P 0.60915(11) 0.77246(10) 0.35176(7) 0.0203(3) Uani 1 1 d . N1 N 0.7458(3) 0.8029(3) 0.1535(2) 0.0187(8) Uani 1 1 d . N2 N 0.5870(3) 0.8979(3) 0.2923(2) 0.0173(8) Uani 1 1 d . N3 N 0.6824(3) 0.6607(3) 0.3012(2) 0.0198(8) Uani 1 1 d . N4 N 0.9324(4) 0.6100(3) 0.1813(2) 0.0213(9) Uani 1 1 d D H4 H 0.981(4) 0.658(3) 0.162(3) 0.026 Uiso 1 1 d D N5 N 0.7021(3) 0.5815(3) 0.1609(2) 0.0218(9) Uani 1 1 d D H5 H 0.758(4) 0.553(4) 0.122(2) 0.026 Uiso 1 1 d D N6 N 0.8436(4) 0.9508(3) 0.2010(2) 0.0232(9) Uani 1 1 d D H6 H 0.917(3) 0.910(3) 0.181(3) 0.028 Uiso 1 1 d D N7 N 0.6134(3) 1.0394(3) 0.1482(2) 0.0195(9) Uani 1 1 d D H7 H 0.665(4) 1.068(4) 0.1070(19) 0.023 Uiso 1 1 d D N8 N 0.6968(4) 0.7888(3) 0.4176(2) 0.0241(9) Uani 1 1 d D H8 H 0.741(4) 0.837(3) 0.395(3) 0.029 Uiso 1 1 d D N9 N 0.4603(4) 0.7382(3) 0.4115(2) 0.0219(9) Uani 1 1 d D H9 H 0.444(4) 0.683(3) 0.400(3) 0.026 Uiso 1 1 d D C1 C 0.8062(4) 0.8211(4) 0.0593(2) 0.0247(11) Uani 1 1 d . H1A H 0.9040 0.8333 0.0470 0.037 Uiso 1 1 calc R H1B H 0.7465 0.8917 0.0328 0.037 Uiso 1 1 calc R H1C H 0.8083 0.7505 0.0355 0.037 Uiso 1 1 calc R C41 C 1.0177(4) 0.4851(4) 0.1914(3) 0.0220(10) Uani 1 1 d . C42 C 0.9363(4) 0.4067(4) 0.2620(3) 0.0284(11) Uani 1 1 d . H42A H 0.8487 0.4038 0.2475 0.043 Uiso 1 1 calc R H42B H 0.9110 0.4393 0.3162 0.043 Uiso 1 1 calc R H42C H 0.9961 0.3257 0.2685 0.043 Uiso 1 1 calc R C43 C 1.1529(4) 0.4904(4) 0.2128(3) 0.0309(12) Uani 1 1 d . H43A H 1.2053 0.5419 0.1662 0.046 Uiso 1 1 calc R H43B H 1.2132 0.4096 0.2191 0.046 Uiso 1 1 calc R H43C H 1.1281 0.5230 0.2669 0.046 Uiso 1 1 calc R C44 C 1.0577(4) 0.4378(4) 0.1066(3) 0.0318(12) Uani 1 1 d . H44A H 1.1106 0.4904 0.0614 0.048 Uiso 1 1 calc R H44B H 0.9704 0.4354 0.0915 0.048 Uiso 1 1 calc R H44C H 1.1180 0.3569 0.1120 0.048 Uiso 1 1 calc R C51 C 0.5558(4) 0.5627(4) 0.1757(3) 0.0217(10) Uani 1 1 d . C52 C 0.5556(5) 0.5101(4) 0.0987(3) 0.0299(12) Uani 1 1 d . H52A H 0.5780 0.5669 0.0460 0.045 Uiso 1 1 calc R H52B H 0.4608 0.4944 0.1060 0.045 Uiso 1 1 calc R H52C H 0.6281 0.4351 0.0944 0.045 Uiso 1 1 calc R C53 C 0.5219(4) 0.4766(4) 0.2575(3) 0.0272(11) Uani 1 1 d . H53A H 0.5930 0.4009 0.2531 0.041 Uiso 1 1 calc R H53B H 0.4261 0.4622 0.2660 0.041 Uiso 1 1 calc R H53C H 0.5245 0.5109 0.3065 0.041 Uiso 1 1 calc R C54 C 0.4477(4) 0.6808(4) 0.1808(3) 0.0221(10) Uani 1 1 d . H54A H 0.4716 0.7357 0.1273 0.033 Uiso 1 1 calc R H54B H 0.4501 0.7156 0.2296 0.033 Uiso 1 1 calc R H54C H 0.3515 0.6675 0.1889 0.033 Uiso 1 1 calc R C61 C 0.8803(4) 1.0538(4) 0.2228(3) 0.0217(10) Uani 1 1 d . C62 C 0.7467(4) 1.1380(4) 0.2651(3) 0.0293(11) Uani 1 1 d . H62A H 0.6959 1.0947 0.3180 0.044 Uiso 1 1 calc R H62B H 0.6839 1.1693 0.2254 0.044 Uiso 1 1 calc R H62C H 0.7737 1.2046 0.2793 0.044 Uiso 1 1 calc R C63 C 0.9770(4) 1.0018(4) 0.2842(3) 0.0290(11) Uani 1 1 d . H63A H 0.9245 0.9597 0.3370 0.043 Uiso 1 1 calc R H63B H 1.0074 1.0666 0.2984 0.043 Uiso 1 1 calc R H63C H 1.0615 0.9456 0.2567 0.043 Uiso 1 1 calc R C64 C 0.9603(5) 1.1187(4) 0.1411(3) 0.0300(11) Uani 1 1 d . H64A H 1.0465 1.0632 0.1145 0.045 Uiso 1 1 calc R H64B H 0.9879 1.1853 0.1548 0.045 Uiso 1 1 calc R H64C H 0.8983 1.1497 0.1008 0.045 Uiso 1 1 calc R C71 C 0.4598(4) 1.0917(4) 0.1522(3) 0.0222(11) Uani 1 1 d . C72 C 0.3856(4) 0.9977(4) 0.1475(3) 0.0285(11) Uani 1 1 d . H72A H 0.3898 0.9350 0.1976 0.043 Uiso 1 1 calc R H72B H 0.4334 0.9625 0.0945 0.043 Uiso 1 1 calc R H72C H 0.2851 1.0344 0.1475 0.043 Uiso 1 1 calc R C73 C 0.3887(4) 1.1472(4) 0.2341(3) 0.0277(11) Uani 1 1 d . H73A H 0.4384 1.2081 0.2358 0.042 Uiso 1 1 calc R H73B H 0.3937 1.0850 0.2844 0.042 Uiso 1 1 calc R H73C H 0.2881 1.1844 0.2350 0.042 Uiso 1 1 calc R C74 C 0.4547(4) 1.1895(4) 0.0754(3) 0.0275(11) Uani 1 1 d . H74A H 0.5036 1.2498 0.0792 0.041 Uiso 1 1 calc R H74B H 0.3545 1.2270 0.0752 0.041 Uiso 1 1 calc R H74C H 0.5026 1.1549 0.0221 0.041 Uiso 1 1 calc R C81 C 0.7815(4) 0.6968(4) 0.4708(3) 0.0265(11) Uani 1 1 d . C82 C 0.7034(5) 0.5969(4) 0.5112(3) 0.0383(13) Uani 1 1 d . H82A H 0.6089 0.6290 0.5470 0.057 Uiso 1 1 calc R H82B H 0.7590 0.5362 0.5471 0.057 Uiso 1 1 calc R H82C H 0.6914 0.5607 0.4658 0.057 Uiso 1 1 calc R C83 C 0.7962(6) 0.7560(5) 0.5403(3) 0.0495(15) Uani 1 1 d . H83A H 0.7008 0.7861 0.5760 0.074 Uiso 1 1 calc R H83B H 0.8438 0.8228 0.5136 0.074 Uiso 1 1 calc R H83C H 0.8535 0.6976 0.5765 0.074 Uiso 1 1 calc R C84 C 0.9270(5) 0.6499(4) 0.4151(3) 0.0373(13) Uani 1 1 d . H84A H 0.9762 0.7159 0.3894 0.056 Uiso 1 1 calc R H84B H 0.9158 0.6141 0.3692 0.056 Uiso 1 1 calc R H84C H 0.9837 0.5892 0.4505 0.056 Uiso 1 1 calc R C91 C 0.3310(4) 0.8137(4) 0.4608(3) 0.0260(11) Uani 1 1 d . C92 C 0.2581(4) 0.7312(4) 0.5345(3) 0.0314(12) Uani 1 1 d . H92A H 0.3234 0.6908 0.5717 0.047 Uiso 1 1 calc R H92B H 0.2329 0.6713 0.5114 0.047 Uiso 1 1 calc R H92C H 0.1709 0.7779 0.5682 0.047 Uiso 1 1 calc R C93 C 0.2313(5) 0.8757(4) 0.4029(3) 0.0347(12) Uani 1 1 d . H93A H 0.2790 0.9290 0.3553 0.052 Uiso 1 1 calc R H93B H 0.1438 0.9226 0.4363 0.052 Uiso 1 1 calc R H93C H 0.2064 0.8158 0.3797 0.052 Uiso 1 1 calc R C94 C 0.3743(4) 0.9053(4) 0.4952(3) 0.0301(12) Uani 1 1 d . H94A H 0.4391 0.8640 0.5325 0.045 Uiso 1 1 calc R H94B H 0.2885 0.9540 0.5285 0.045 Uiso 1 1 calc R H94C H 0.4231 0.9569 0.4469 0.045 Uiso 1 1 calc R N10 N 1.1770(4) 0.7953(4) 0.0600(2) 0.0262(9) Uani 1 1 d . O1 O 1.1056(3) 0.7844(3) 0.13707(18) 0.0235(7) Uani 1 1 d . O2 O 1.2050(3) 0.8937(3) 0.02354(19) 0.0340(8) Uani 1 1 d . O3 O 1.2209(3) 0.7077(3) 0.02122(19) 0.0372(9) Uani 1 1 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 P1 0.0224(6) 0.0159(7) 0.0205(6) -0.0054(5) -0.0065(5) -0.0020(5) P2 0.0243(6) 0.0169(7) 0.0177(6) -0.0065(5) -0.0073(5) -0.0002(5) P3 0.0262(6) 0.0166(7) 0.0184(6) -0.0054(5) -0.0067(5) -0.0018(5) N1 0.0227(19) 0.016(2) 0.016(2) -0.0033(16) -0.0038(15) -0.0021(16) N2 0.0231(18) 0.013(2) 0.0188(19) -0.0080(16) -0.0088(15) -0.0016(16) N3 0.0202(18) 0.018(2) 0.020(2) -0.0066(17) -0.0055(15) 0.0007(16) N4 0.028(2) 0.013(2) 0.021(2) 0.0018(18) -0.0054(17) -0.0055(17) N5 0.019(2) 0.026(2) 0.020(2) -0.0089(18) -0.0009(15) -0.0047(18) N6 0.024(2) 0.022(2) 0.024(2) -0.0092(18) -0.0059(17) -0.0003(17) N7 0.020(2) 0.020(2) 0.016(2) -0.0052(18) -0.0042(15) 0.0001(17) N8 0.030(2) 0.019(2) 0.022(2) 0.0006(19) -0.0073(17) -0.0057(18) N9 0.028(2) 0.016(2) 0.023(2) -0.0102(18) -0.0010(16) -0.0067(18) C1 0.026(2) 0.025(3) 0.022(3) -0.010(2) -0.002(2) -0.002(2) C41 0.023(2) 0.011(2) 0.027(3) -0.005(2) -0.007(2) 0.006(2) C42 0.031(3) 0.015(3) 0.035(3) -0.001(2) -0.008(2) -0.002(2) C43 0.029(3) 0.024(3) 0.038(3) -0.007(2) -0.011(2) 0.002(2) C44 0.031(3) 0.027(3) 0.035(3) -0.012(2) -0.005(2) 0.001(2) C51 0.020(2) 0.020(3) 0.025(3) -0.005(2) -0.0054(19) -0.002(2) C52 0.033(3) 0.026(3) 0.034(3) -0.015(2) -0.009(2) -0.004(2) C53 0.026(2) 0.025(3) 0.030(3) -0.005(2) -0.007(2) -0.004(2) C54 0.022(2) 0.021(3) 0.025(3) -0.009(2) -0.0074(19) -0.002(2) C61 0.023(2) 0.020(3) 0.025(3) -0.008(2) -0.007(2) -0.003(2) C62 0.037(3) 0.021(3) 0.035(3) -0.015(2) -0.010(2) -0.005(2) C63 0.033(3) 0.029(3) 0.029(3) -0.006(2) -0.013(2) -0.005(2) C64 0.040(3) 0.026(3) 0.030(3) -0.003(2) -0.011(2) -0.014(2) C71 0.023(2) 0.021(3) 0.023(3) -0.005(2) -0.0098(19) 0.000(2) C72 0.021(2) 0.031(3) 0.034(3) -0.008(2) -0.010(2) -0.001(2) C73 0.029(3) 0.023(3) 0.028(3) -0.005(2) -0.006(2) -0.001(2) C74 0.027(2) 0.025(3) 0.028(3) -0.004(2) -0.011(2) 0.004(2) C81 0.033(3) 0.022(3) 0.025(3) -0.002(2) -0.016(2) 0.001(2) C82 0.045(3) 0.031(3) 0.031(3) 0.005(3) -0.012(2) -0.001(3) C83 0.075(4) 0.036(3) 0.049(3) -0.011(3) -0.046(3) 0.007(3) C84 0.038(3) 0.027(3) 0.047(3) -0.004(3) -0.020(2) 0.002(2) C91 0.028(3) 0.024(3) 0.021(3) -0.005(2) -0.003(2) 0.001(2) C92 0.031(3) 0.029(3) 0.028(3) -0.004(2) 0.001(2) -0.005(2) C93 0.034(3) 0.034(3) 0.031(3) -0.005(2) -0.005(2) -0.002(2) C94 0.032(3) 0.023(3) 0.034(3) -0.014(2) -0.002(2) -0.003(2) N10 0.027(2) 0.024(3) 0.029(3) -0.003(2) -0.0093(19) -0.005(2) O1 0.0225(16) 0.0260(18) 0.0194(18) -0.0042(15) -0.0004(14) -0.0054(14) O2 0.0438(19) 0.024(2) 0.0300(19) -0.0037(17) -0.0012(15) -0.0086(16) O3 0.053(2) 0.022(2) 0.035(2) -0.0172(17) -0.0019(16) -0.0041(17) 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' loop_ _geom_angle_atom_site_label_1 _geom_angle_atom_site_label_2 _geom_angle_atom_site_label_3 _geom_angle N3 P1 N4 118.11(18) N3 P1 N5 109.84(18) N4 P1 N5 103.38(18) N3 P1 N1 110.36(18) N4 P1 N1 103.41(17) N5 P1 N1 111.45(18) N2 P2 N7 109.03(18) N2 P2 N6 118.80(17) N7 P2 N6 106.46(19) N2 P2 N1 109.06(17) N7 P2 N1 112.44(17) N6 P2 N1 100.94(17) N2 P3 N3 114.85(17) N2 P3 N9 113.58(18) N3 P3 N9 102.80(18) N2 P3 N8 104.46(18) N3 P3 N8 114.64(18) N9 P3 N8 106.49(18) C1 N1 P1 117.7(3) C1 N1 P2 117.0(3) P1 N1 P2 124.37(19) P2 N2 P3 122.6(2) P1 N3 P3 127.5(2) C41 N4 P1 131.1(3) C51 N5 P1 130.8(3) C61 N6 P2 131.3(3) C71 N7 P2 131.7(3) C81 N8 P3 129.4(3) C91 N9 P3 130.0(3) N4 C41 C42 111.2(3) N4 C41 C43 106.8(3) C42 C41 C43 110.1(3) N4 C41 C44 109.0(3) C42 C41 C44 110.8(4) C43 C41 C44 108.7(3) N5 C51 C53 109.7(3) N5 C51 C54 110.2(3) C53 C51 C54 110.6(3) N5 C51 C52 106.3(3) C53 C51 C52 110.3(4) C54 C51 C52 109.7(3) N6 C61 C64 108.6(3) N6 C61 C62 111.0(3) C64 C61 C62 110.4(4) N6 C61 C63 106.6(3) C64 C61 C63 109.9(3) C62 C61 C63 110.3(3) N7 C71 C72 110.4(3) N7 C71 C74 106.4(3) C72 C71 C74 110.4(3) N7 C71 C73 110.1(3) C72 C71 C73 110.7(3) C74 C71 C73 108.7(3) N8 C81 C84 109.4(4) N8 C81 C82 109.3(4) C84 C81 C82 110.6(4) N8 C81 C83 107.3(4) C84 C81 C83 110.3(4) C82 C81 C83 109.9(4) N9 C91 C93 109.6(3) N9 C91 C92 107.1(3) C93 C91 C92 109.8(4) N9 C91 C94 109.8(3) C93 C91 C94 110.2(4) C92 C91 C94 110.3(4) O3 N10 O2 120.4(4) O3 N10 O1 119.8(4) O2 N10 O1 119.8(4) loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance P1 N3 1.550(3) P1 N4 1.604(4) P1 N5 1.618(4) P1 N1 1.667(3) P2 N2 1.555(3) P2 N7 1.597(4) P2 N6 1.608(4) P2 N1 1.688(3) P3 N2 1.581(3) P3 N3 1.594(3) P3 N9 1.623(4) P3 N8 1.638(4) N1 C1 1.477(5) N4 C41 1.487(5) N5 C51 1.477(5) N6 C61 1.487(5) N7 C71 1.480(5) N8 C81 1.475(5) N9 C91 1.482(5) C41 C42 1.497(6) C41 C43 1.506(6) C41 C44 1.511(6) C51 C53 1.506(6) C51 C54 1.514(5) C51 C52 1.516(5) C61 C64 1.509(6) C61 C62 1.514(5) C61 C63 1.515(6) C71 C72 1.506(6) C71 C74 1.512(6) C71 C73 1.518(5) C81 C84 1.506(6) C81 C82 1.508(6) C81 C83 1.512(6) C91 C93 1.509(6) C91 C92 1.513(6) C91 C94 1.517(6) N10 O3 1.236(4) N10 O2 1.244(4) N10 O1 1.256(4) 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 N4 H4 O1 0.79(2) 2.09(2) 2.866(4) 169(4) . N6 H6 O1 0.78(2) 2.10(2) 2.884(4) 174(5) . N7 H7 O2 0.79(2) 2.18(2) 2.947(4) 163(4) 2_775