# Electronic Supplementary Material (ESI) for Chemical Communications # This journal is © The Royal Society of Chemistry 2013 ####################################################################### # # Cambridge Crystallographic Data Centre # CCDC # ####################################################################### # # This CIF contains data from an original supplementary publication # deposited with the CCDC, and may include chemical, crystal, # experimental, refinement, atomic coordinates, # anisotropic displacement parameters and molecular geometry data, # as required by the journal to which it was submitted. # # This CIF is provided on the understanding that it is used for bona # fide research purposes only. It may contain copyright material # of the CCDC or of third parties, and may not be copied or further # disseminated in any form, whether machine-readable or not, # except for the purpose of generating routine backup copies # on your local computer system. # # For further information on the CCDC, data deposition and # data retrieval see: # www.ccdc.cam.ac.uk # # Bona fide researchers may freely download Mercury and enCIFer # from this site to visualise CIF-encoded structures and # to carry out CIF format checking respectively. # data_3aa _audit_creation_method SHELXL-97 _chemical_name_systematic ; 4-(1H-indol-3-yl)-2,5-diphenyloxazole ; _chemical_name_common ? _chemical_melting_point ? _chemical_formula_moiety 'C23 H16 N2 O' _chemical_formula_sum 'C23 H16 N2 O' _chemical_formula_weight 336.38 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' N N 0.0311 0.0180 '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' _symmetry_cell_setting Monoclinic _symmetry_space_group_name_H-M 'P 2(1)/c' loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, y+1/2, -z+1/2' '-x, -y, -z' 'x, -y-1/2, z-1/2' _cell_length_a 12.0222(2) _cell_length_b 7.23960(10) _cell_length_c 20.9825(3) _cell_angle_alpha 90.00 _cell_angle_beta 106.4820(10) _cell_angle_gamma 90.00 _cell_volume 1751.19(5) _cell_formula_units_Z 4 _cell_measurement_temperature 120(2) _cell_measurement_reflns_used 7545 _cell_measurement_theta_min 3.835 _cell_measurement_theta_max 70.570 _exptl_crystal_description Rod _exptl_crystal_colour 'Light Brown' _exptl_crystal_size_max 0.26 _exptl_crystal_size_mid 0.12 _exptl_crystal_size_min 0.12 _exptl_crystal_density_meas ? _exptl_crystal_density_diffrn 1.276 _exptl_crystal_density_method 'not measured' _exptl_crystal_F_000 704 _exptl_absorpt_coefficient_mu 0.623 _exptl_absorpt_correction_type Multi-scan _exptl_absorpt_correction_T_min 0.8548 _exptl_absorpt_correction_T_max 0.9290 _exptl_absorpt_process_details 'SADABS V2.07 (Sheldrick, G.M., 2007)' _exptl_special_details ; SADABS was used to perform the Absorption correction Parameter refinement on 8495 reflections reduced R(int) from 0.0966 to 0.0733 Ratio of minimum to maximum apparent transmission: 0.797292 The given Tmin and Tmax were generated using the SHELX SIZE command. ; _diffrn_ambient_temperature 120(2) _diffrn_radiation_wavelength 1.54184 _diffrn_radiation_type CuK\a _diffrn_radiation_source 'fine-focus sealed tube' _diffrn_radiation_monochromator graphite _diffrn_measurement_device_type 'Bruker SMART 6000' _diffrn_measurement_method 'Omega scans' _diffrn_detector_area_resol_mean ? _diffrn_standards_number ? _diffrn_standards_interval_count ? _diffrn_standards_interval_time ? _diffrn_standards_decay_% ? _diffrn_reflns_number 11907 _diffrn_reflns_av_R_equivalents 0.0655 _diffrn_reflns_av_sigmaI/netI 0.0635 _diffrn_reflns_limit_h_min -14 _diffrn_reflns_limit_h_max 14 _diffrn_reflns_limit_k_min -8 _diffrn_reflns_limit_k_max 7 _diffrn_reflns_limit_l_min -23 _diffrn_reflns_limit_l_max 24 _diffrn_reflns_theta_min 6.50 _diffrn_reflns_theta_max 66.58 _reflns_number_total 3042 _reflns_number_gt 2678 _reflns_threshold_expression >2\s(I) _computing_data_collection 'SMART V5.626 (Bruker, 1997)' _computing_cell_refinement 'SAINT V6.28A (Bruker, 1997)' _computing_data_reduction 'SAINT V6.28A (Bruker, 1997)' _computing_structure_solution 'SHELXS-97 (Sheldrick, 2008)' _computing_structure_refinement 'SHELXL-97 (Sheldrick, 2008)' _computing_molecular_graphics ; OLEX2 (Dolomanov, O.V., Bourhis, L.J., Gildea, R.J., Howard, J.A.K, & Puschmann, H., 2009) ; _computing_publication_material 'WinGX (Farrugia, 1999)' _refine_special_details ; Refinement of F^2^ against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F^2^, conventional R-factors R are based on F, with F set to zero for negative F^2^. The threshold expression of F^2^ > 2\s(F^2^) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F^2^ are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. ; _refine_ls_structure_factor_coef Fsqd _refine_ls_matrix_type full _refine_ls_weighting_scheme calc _refine_ls_weighting_details 'calc w=1/[\s^2^(Fo^2^)+(0.0896P)^2^+0.3860P] where P=(Fo^2^+2Fc^2^)/3' _atom_sites_solution_primary direct _atom_sites_solution_secondary difmap _atom_sites_solution_hydrogens geom _refine_ls_hydrogen_treatment mixed _refine_ls_extinction_method none _refine_ls_extinction_coef ? _refine_ls_number_reflns 3042 _refine_ls_number_parameters 238 _refine_ls_number_restraints 0 _refine_ls_R_factor_all 0.0575 _refine_ls_R_factor_gt 0.0525 _refine_ls_wR_factor_ref 0.1537 _refine_ls_wR_factor_gt 0.1455 _refine_ls_goodness_of_fit_ref 1.057 _refine_ls_restrained_S_all 1.057 _refine_ls_shift/su_max 0.000 _refine_ls_shift/su_mean 0.000 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 C1 C 0.53145(13) 0.7177(2) 0.06820(8) 0.0324(4) Uani 1 1 d . . . C2 C 0.70364(13) 0.7332(2) 0.13810(7) 0.0282(4) Uani 1 1 d . . . C3 C 0.62664(12) 0.6739(2) 0.17043(8) 0.0293(4) Uani 1 1 d . . . C4 C 0.64165(12) 0.6113(2) 0.23866(8) 0.0313(4) Uani 1 1 d . . . C5 C 0.58573(13) 0.4597(2) 0.25455(8) 0.0352(4) Uani 1 1 d . . . H5 H 0.5315 0.3853 0.2233 0.042 Uiso 1 1 calc R . . C6 C 0.69681(13) 0.5674(2) 0.35171(8) 0.0342(4) Uani 1 1 d . . . C7 C 0.71214(13) 0.6848(2) 0.30079(8) 0.0319(4) Uani 1 1 d . . . C8 C 0.78500(15) 0.8390(2) 0.31892(8) 0.0368(4) Uani 1 1 d . . . H8 H 0.7961 0.9212 0.2860 0.044 Uiso 1 1 calc R . . C9 C 0.84033(17) 0.8697(3) 0.38526(9) 0.0430(4) Uani 1 1 d . . . H9 H 0.8900 0.9736 0.3977 0.052 Uiso 1 1 calc R . . C10 C 0.82472(16) 0.7507(3) 0.43477(9) 0.0434(5) Uani 1 1 d . . . H10 H 0.8640 0.7754 0.4800 0.052 Uiso 1 1 calc R . . C11 C 0.75297(15) 0.5978(2) 0.41867(8) 0.0389(4) Uani 1 1 d . . . H11 H 0.7425 0.5166 0.4521 0.047 Uiso 1 1 calc R . . C12 C 0.44443(14) 0.7279(2) 0.00335(9) 0.0377(4) Uani 1 1 d . . . C13 C 0.33315(16) 0.6609(3) -0.00264(10) 0.0475(5) Uani 1 1 d . . . H13 H 0.3140 0.6119 0.0349 0.057 Uiso 1 1 calc R . . C14 C 0.25053(18) 0.6669(3) -0.06443(12) 0.0597(6) Uani 1 1 d . . . H14 H 0.1744 0.6221 -0.0690 0.072 Uiso 1 1 calc R . . C15 C 0.2785(2) 0.7373(3) -0.11901(11) 0.0637(7) Uani 1 1 d . . . H15 H 0.2216 0.7398 -0.1610 0.076 Uiso 1 1 calc R . . C16 C 0.3882(2) 0.8039(3) -0.11314(10) 0.0553(6) Uani 1 1 d . . . H16 H 0.4065 0.8533 -0.1509 0.066 Uiso 1 1 calc R . . C17 C 0.47218(17) 0.7988(2) -0.05201(9) 0.0442(5) Uani 1 1 d . . . H17 H 0.5482 0.8435 -0.0480 0.053 Uiso 1 1 calc R . . C18 C 0.82941(13) 0.7547(2) 0.15407(8) 0.0280(4) Uani 1 1 d . . . C19 C 0.87974(14) 0.8646(2) 0.11505(8) 0.0324(4) Uani 1 1 d . . . H19 H 0.8317 0.9298 0.0782 0.039 Uiso 1 1 calc R . . C20 C 0.99990(14) 0.8793(2) 0.12981(8) 0.0359(4) Uani 1 1 d . . . H20 H 1.0334 0.9556 0.1033 0.043 Uiso 1 1 calc R . . C21 C 1.07068(13) 0.7828(2) 0.18304(8) 0.0348(4) Uani 1 1 d . . . H21 H 1.1526 0.7916 0.1928 0.042 Uiso 1 1 calc R . . C22 C 1.02134(13) 0.6731(2) 0.22202(8) 0.0325(4) Uani 1 1 d . . . H22 H 1.0698 0.6073 0.2586 0.039 Uiso 1 1 calc R . . C23 C 0.90175(13) 0.6590(2) 0.20783(8) 0.0306(4) Uani 1 1 d . . . H23 H 0.8688 0.5837 0.2348 0.037 Uiso 1 1 calc R . . N1 N 0.51635(11) 0.66595(18) 0.12443(7) 0.0326(3) Uani 1 1 d . . . N2 N 0.61932(12) 0.4315(2) 0.32158(7) 0.0380(4) Uani 1 1 d . . . H2 H 0.5914(18) 0.340(3) 0.3424(10) 0.046 Uiso 1 1 d . . . O1 O 0.64257(9) 0.76362(15) 0.07219(5) 0.0311(3) 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 C1 0.0317(8) 0.0274(8) 0.0364(9) -0.0063(6) 0.0072(7) 0.0059(6) C2 0.0306(8) 0.0277(8) 0.0256(8) -0.0012(6) 0.0070(6) 0.0050(6) C3 0.0273(7) 0.0274(8) 0.0334(9) -0.0041(6) 0.0087(6) 0.0027(6) C4 0.0277(7) 0.0341(9) 0.0351(9) -0.0018(6) 0.0138(6) 0.0007(6) C5 0.0306(8) 0.0411(9) 0.0372(9) -0.0044(7) 0.0149(6) -0.0035(6) C6 0.0334(8) 0.0363(9) 0.0388(9) -0.0004(7) 0.0197(7) -0.0013(6) C7 0.0325(8) 0.0348(9) 0.0318(9) -0.0010(6) 0.0149(6) 0.0017(6) C8 0.0443(9) 0.0356(9) 0.0338(9) -0.0001(7) 0.0162(7) -0.0058(7) C9 0.0530(10) 0.0418(10) 0.0364(10) -0.0067(7) 0.0160(8) -0.0113(8) C10 0.0507(10) 0.0507(11) 0.0311(9) -0.0034(7) 0.0154(8) -0.0051(8) C11 0.0435(9) 0.0464(10) 0.0330(9) 0.0029(7) 0.0208(7) -0.0007(7) C12 0.0376(9) 0.0292(9) 0.0397(10) -0.0091(7) 0.0002(7) 0.0096(6) C13 0.0403(9) 0.0358(10) 0.0569(12) -0.0117(8) -0.0013(8) 0.0047(7) C14 0.0439(11) 0.0422(12) 0.0749(16) -0.0186(10) -0.0123(10) 0.0053(8) C15 0.0711(15) 0.0426(11) 0.0529(13) -0.0156(9) -0.0219(11) 0.0213(10) C16 0.0705(14) 0.0430(11) 0.0390(11) -0.0093(8) -0.0063(9) 0.0200(9) C17 0.0539(11) 0.0361(10) 0.0366(10) -0.0066(7) 0.0033(8) 0.0136(8) C18 0.0298(8) 0.0277(8) 0.0282(8) -0.0041(6) 0.0107(6) 0.0014(6) C19 0.0365(8) 0.0325(9) 0.0305(8) 0.0006(6) 0.0129(6) 0.0051(6) C20 0.0385(9) 0.0359(9) 0.0384(9) -0.0012(7) 0.0194(7) -0.0017(7) C21 0.0290(8) 0.0370(9) 0.0405(9) -0.0070(7) 0.0131(7) -0.0010(6) C22 0.0301(8) 0.0349(9) 0.0314(9) -0.0027(6) 0.0071(6) 0.0031(6) C23 0.0318(8) 0.0303(8) 0.0311(8) 0.0001(6) 0.0112(6) 0.0006(6) N1 0.0284(7) 0.0321(7) 0.0364(8) -0.0058(5) 0.0078(5) 0.0029(5) N2 0.0379(7) 0.0413(8) 0.0406(8) 0.0006(6) 0.0207(6) -0.0080(6) O1 0.0299(6) 0.0327(6) 0.0295(6) -0.0018(4) 0.0065(5) 0.0040(4) _geom_special_details ; All s.u.'s (except the s.u. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell s.u.'s are taken into account individually in the estimation of s.u.'s in distances, angles and torsion angles; correlations between s.u.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell s.u.'s is used for estimating s.u.'s involving l.s. planes. ; 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 C1 N1 1.299(2) . ? C1 O1 1.3559(19) . ? C1 C12 1.464(2) . ? C2 C3 1.363(2) . ? C2 O1 1.3871(18) . ? C2 C18 1.461(2) . ? C3 N1 1.4025(19) . ? C3 C4 1.463(2) . ? C4 C5 1.377(2) . ? C4 C7 1.440(2) . ? C5 N2 1.364(2) . ? C5 H5 0.9500 . ? C6 N2 1.378(2) . ? C6 C11 1.393(2) . ? C6 C7 1.418(2) . ? C7 C8 1.403(2) . ? C8 C9 1.380(2) . ? C8 H8 0.9500 . ? C9 C10 1.402(3) . ? C9 H9 0.9500 . ? C10 C11 1.385(3) . ? C10 H10 0.9500 . ? C11 H11 0.9500 . ? C12 C17 1.394(3) . ? C12 C13 1.395(3) . ? C13 C14 1.392(3) . ? C13 H13 0.9500 . ? C14 C15 1.379(4) . ? C14 H14 0.9500 . ? C15 C16 1.377(4) . ? C15 H15 0.9500 . ? C16 C17 1.389(3) . ? C16 H16 0.9500 . ? C17 H17 0.9500 . ? C18 C19 1.396(2) . ? C18 C23 1.397(2) . ? C19 C20 1.393(2) . ? C19 H19 0.9500 . ? C20 C21 1.386(2) . ? C20 H20 0.9500 . ? C21 C22 1.388(2) . ? C21 H21 0.9500 . ? C22 C23 1.387(2) . ? C22 H22 0.9500 . ? C23 H23 0.9500 . ? N2 H2 0.91(2) . ? 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 N1 C1 O1 113.81(13) . . ? N1 C1 C12 127.70(15) . . ? O1 C1 C12 118.47(15) . . ? C3 C2 O1 107.71(13) . . ? C3 C2 C18 136.39(14) . . ? O1 C2 C18 115.62(13) . . ? C2 C3 N1 108.26(14) . . ? C2 C3 C4 132.22(14) . . ? N1 C3 C4 119.38(14) . . ? C5 C4 C7 106.13(14) . . ? C5 C4 C3 123.44(15) . . ? C7 C4 C3 130.42(15) . . ? N2 C5 C4 110.29(15) . . ? N2 C5 H5 124.9 . . ? C4 C5 H5 124.9 . . ? N2 C6 C11 130.27(15) . . ? N2 C6 C7 107.32(14) . . ? C11 C6 C7 122.41(15) . . ? C8 C7 C6 118.51(15) . . ? C8 C7 C4 134.53(15) . . ? C6 C7 C4 106.94(14) . . ? C9 C8 C7 119.14(15) . . ? C9 C8 H8 120.4 . . ? C7 C8 H8 120.4 . . ? C8 C9 C10 121.38(16) . . ? C8 C9 H9 119.3 . . ? C10 C9 H9 119.3 . . ? C11 C10 C9 121.02(16) . . ? C11 C10 H10 119.5 . . ? C9 C10 H10 119.5 . . ? C10 C11 C6 117.53(15) . . ? C10 C11 H11 121.2 . . ? C6 C11 H11 121.2 . . ? C17 C12 C13 120.20(17) . . ? C17 C12 C1 121.07(17) . . ? C13 C12 C1 118.71(18) . . ? C14 C13 C12 119.1(2) . . ? C14 C13 H13 120.5 . . ? C12 C13 H13 120.5 . . ? C15 C14 C13 120.5(2) . . ? C15 C14 H14 119.8 . . ? C13 C14 H14 119.8 . . ? C16 C15 C14 120.55(18) . . ? C16 C15 H15 119.7 . . ? C14 C15 H15 119.7 . . ? C15 C16 C17 120.0(2) . . ? C15 C16 H16 120.0 . . ? C17 C16 H16 120.0 . . ? C16 C17 C12 119.7(2) . . ? C16 C17 H17 120.1 . . ? C12 C17 H17 120.1 . . ? C19 C18 C23 118.81(14) . . ? C19 C18 C2 121.22(14) . . ? C23 C18 C2 119.93(14) . . ? C20 C19 C18 120.51(15) . . ? C20 C19 H19 119.7 . . ? C18 C19 H19 119.7 . . ? C21 C20 C19 120.10(15) . . ? C21 C20 H20 119.9 . . ? C19 C20 H20 119.9 . . ? C20 C21 C22 119.74(15) . . ? C20 C21 H21 120.1 . . ? C22 C21 H21 120.1 . . ? C23 C22 C21 120.39(15) . . ? C23 C22 H22 119.8 . . ? C21 C22 H22 119.8 . . ? C22 C23 C18 120.45(15) . . ? C22 C23 H23 119.8 . . ? C18 C23 H23 119.8 . . ? C1 N1 C3 105.36(13) . . ? C5 N2 C6 109.28(14) . . ? C5 N2 H2 124.3(12) . . ? C6 N2 H2 126.4(12) . . ? C1 O1 C2 104.85(12) . . ? 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 O1 C2 C3 N1 0.32(16) . . . . ? C18 C2 C3 N1 -172.94(16) . . . . ? O1 C2 C3 C4 175.93(15) . . . . ? C18 C2 C3 C4 2.7(3) . . . . ? C2 C3 C4 C5 -136.57(18) . . . . ? N1 C3 C4 C5 38.7(2) . . . . ? C2 C3 C4 C7 43.3(3) . . . . ? N1 C3 C4 C7 -141.44(16) . . . . ? C7 C4 C5 N2 -1.82(18) . . . . ? C3 C4 C5 N2 178.10(13) . . . . ? N2 C6 C7 C8 178.03(14) . . . . ? C11 C6 C7 C8 -1.2(2) . . . . ? N2 C6 C7 C4 -0.90(17) . . . . ? C11 C6 C7 C4 179.86(14) . . . . ? C5 C4 C7 C8 -177.03(18) . . . . ? C3 C4 C7 C8 3.0(3) . . . . ? C5 C4 C7 C6 1.65(17) . . . . ? C3 C4 C7 C6 -178.27(15) . . . . ? C6 C7 C8 C9 0.9(2) . . . . ? C4 C7 C8 C9 179.47(17) . . . . ? C7 C8 C9 C10 -0.3(3) . . . . ? C8 C9 C10 C11 0.0(3) . . . . ? C9 C10 C11 C6 -0.3(3) . . . . ? N2 C6 C11 C10 -178.17(17) . . . . ? C7 C6 C11 C10 0.9(2) . . . . ? N1 C1 C12 C17 175.48(15) . . . . ? O1 C1 C12 C17 -5.7(2) . . . . ? N1 C1 C12 C13 -6.1(2) . . . . ? O1 C1 C12 C13 172.69(14) . . . . ? C17 C12 C13 C14 -0.4(3) . . . . ? C1 C12 C13 C14 -178.78(15) . . . . ? C12 C13 C14 C15 0.3(3) . . . . ? C13 C14 C15 C16 -0.4(3) . . . . ? C14 C15 C16 C17 0.6(3) . . . . ? C15 C16 C17 C12 -0.7(3) . . . . ? C13 C12 C17 C16 0.5(2) . . . . ? C1 C12 C17 C16 178.93(15) . . . . ? C3 C2 C18 C19 -163.07(17) . . . . ? O1 C2 C18 C19 24.1(2) . . . . ? C3 C2 C18 C23 19.3(3) . . . . ? O1 C2 C18 C23 -153.61(14) . . . . ? C23 C18 C19 C20 -0.4(2) . . . . ? C2 C18 C19 C20 -178.10(14) . . . . ? C18 C19 C20 C21 0.8(2) . . . . ? C19 C20 C21 C22 -0.7(2) . . . . ? C20 C21 C22 C23 0.3(2) . . . . ? C21 C22 C23 C18 0.1(2) . . . . ? C19 C18 C23 C22 0.0(2) . . . . ? C2 C18 C23 C22 177.68(14) . . . . ? O1 C1 N1 C3 -1.11(17) . . . . ? C12 C1 N1 C3 177.74(15) . . . . ? C2 C3 N1 C1 0.45(16) . . . . ? C4 C3 N1 C1 -175.82(14) . . . . ? C4 C5 N2 C6 1.30(18) . . . . ? C11 C6 N2 C5 178.95(16) . . . . ? C7 C6 N2 C5 -0.20(18) . . . . ? N1 C1 O1 C2 1.30(16) . . . . ? C12 C1 O1 C2 -177.66(13) . . . . ? C3 C2 O1 C1 -0.93(15) . . . . ? C18 C2 O1 C1 173.92(12) . . . . ? 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 N2 H2 N1 0.91(2) 2.07(2) 2.9478(19) 163.7(18) 2_645 _diffrn_measured_fraction_theta_max 0.982 _diffrn_reflns_theta_full 66.58 _diffrn_measured_fraction_theta_full 0.982 _refine_diff_density_max 0.309 _refine_diff_density_min -0.232 _refine_diff_density_rms 0.051 _database_code_depnum_ccdc_archive 'CCDC 950268'