##############################################################################
###                                                                        ###
###        Electronic paper (Acta Crystallographica Section E)             ###
###                                                                        ###
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#                                                                            #
# This CIF contains the data in a paper accepted for publication in Acta     #
# Crystallographica Section E. It conforms to the requirements of Notes      #
# for Authors for Section E, and has been peer reviewed under the auspices   #
# of the IUCr Commission on Journals.                                        #
#                                                                            #
# Full details of the Crystallographic Information File format               #
# are given in the paper "The Crystallographic Information File (CIF):       #
# a New Standard Archive File for Crystallography" by S. R. Hall, F. H.      #
# Allen and I. D. Brown [Acta Cryst. (1991), A47, 655-685].                  #
#                                                                            #
# The current version of the core CIF dictionary is obtainable from          #
# ftp://ftp.iucr.org/pub/cif_core.dic. The current version number is 2.1.    #
#                                                                            #
# Software is freely available for graphical display of the structure(s) in  #
# this CIF.  For information consult the CIF home page http://www.iucr.org/  #
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##############################################################################
                                             
data_global
_audit_creation_method     SHELXL-97
_journal_date_recd_electronic     2005-03-15
_journal_date_accepted     2005-03-22
_journal_name_full     'Acta Crystallographica, Section E'
_journal_year     2005
_journal_volume     61
_journal_issue      4
_journal_page_first     o1147
_journal_page_last     o1149
_journal_paper_category     EO
_publ_contact_author_name     'Prof. Ji-Ben Meng'
_publ_contact_author_address
;
Department of Chemistry
Nankai University
Tianjin
People's Republic of china
;
_publ_contact_author_email     mengjiben@nankai.edu.cn
_publ_contact_author_fax     '+86-22-23502230'
_publ_contact_author_phone     '+86-22-23509933'
_publ_section_title
;
7-Methyl-1-(β-D-erythro-pentofuranosyl)-1H-benzimidazol-2(3H)-one
;
loop_
    _publ_author_name
    _publ_author_address
    'Qi, Ji'
;
Department of Chemistry
Nankai University
Tianjin 300071
People's Republic of China
;
    'Hui, Guo'
;
Department of Chemistry
Nankai University
Tianjin 300071
People's Republic of China
;
    'Hai-Bin, Song'
;
State Key Laboratory of Elemento-Organic Chemistry
Nankai University
Tianjin 300071
People's Republic of China
;
    'Fei, Huang'
;
Department of Chemistry
Nankai University
Tianjin 300071
People's Republic of China
;
    'Ji-Ben, Meng'
;
Department of Chemistry
Nankai University
Tianjin 300071
People's Republic of China
;
data_II
_chemical_name_systematic
;
7-Methyl-1-(β-D-erythro-pentofuranosyl)-1H-benzimidazol-2(3H)-one
;
_chemical_name_common     ?
_chemical_formula_moiety     'C13 H16 N2 O5'
_chemical_formula_sum     'C13 H16 N2 O5'
_chemical_formula_iupac     'C13 H16 N2 O5'
_chemical_formula_weight     280.28
_chemical_melting_point     ?
_symmetry_cell_setting     Orthorhombic
_symmetry_space_group_name_H-M     'P 21 21 21'
_symmetry_space_group_name_Hall     'P 2ac 2ab'
loop_
    _symmetry_equiv_pos_as_xyz
    'x, y, z'
    '-x+1/2, -y, z+1/2'
    '-x, y+1/2, -z+1/2'
    'x+1/2, -y+1/2, -z'
_cell_length_a     6.741(4)
_cell_length_b     9.119(5)
_cell_length_c     20.465(11)
_cell_angle_alpha     90.00
_cell_angle_beta     90.00
_cell_angle_gamma     90.00
_cell_volume     1258.0(11)
_cell_formula_units_Z     4
_cell_measurement_reflns_used     2668
_cell_measurement_theta_min     2.44
_cell_measurement_theta_max     26.84
_cell_measurement_temperature     293(2)
_exptl_crystal_description     Plate
_exptl_crystal_colour     colourless
_exptl_crystal_size_max     0.38
_exptl_crystal_size_mid     0.22
_exptl_crystal_size_min     0.10
_exptl_crystal_density_diffrn     1.480
_exptl_crystal_density_meas     ?
_exptl_crystal_density_method     'not measured'
_exptl_crystal_F_000     592
_exptl_absorpt_coefficient_mu     0.115
_exptl_absorpt_correction_type     multi-scan
_exptl_absorpt_process_details     '(SADABS; Sheldrick, 1996)'
_exptl_absorpt_correction_T_min     0.940
_exptl_absorpt_correction_T_max     0.989
_exptl_special_details
;
;
_diffrn_ambient_temperature     293(2)
_diffrn_radiation_type     MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_source     'fine-focus sealed tube'
_diffrn_radiation_monochromator     graphite
_diffrn_measurement_device_type     'Bruker APEX CCD area-detector'
_diffrn_measurement_method     'φ and ω'
_diffrn_detector_area_resol_mean     ?
_diffrn_reflns_number     8479
_diffrn_reflns_av_R_equivalents     0.0252
_diffrn_reflns_av_sigmaI/netI     0.0211
_diffrn_reflns_theta_min     1.99
_diffrn_reflns_theta_max     28.10
_diffrn_reflns_theta_full     28.10
_diffrn_measured_fraction_theta_max     0.995
_diffrn_measured_fraction_theta_full     0.995
_diffrn_reflns_limit_h_min     -8
_diffrn_reflns_limit_h_max     8
_diffrn_reflns_limit_k_min     -10
_diffrn_reflns_limit_k_max     12
_diffrn_reflns_limit_l_min     -24
_diffrn_reflns_limit_l_max     27
_diffrn_standards_number     0
_diffrn_standards_interval_count     .
_diffrn_standards_interval_time     .
_diffrn_standards_decay_%     0
_refine_special_details
;
 Refinement of F² against ALL reflections.  The weighted R-factor wR and
 goodness of fit S are based on F², conventional R-factors R are based
 on F, with F set to zero for negative F². The threshold expression of
 F² > 2sigma(F²) is used only for calculating R-factors(gt) etc. and is
 not relevant to the choice of reflections for refinement.  R-factors based
 on F² are statistically about twice as large as those based on F, and R-
 factors based on ALL data will be even larger.
;
_reflns_number_total     1775
_reflns_number_gt     1496
_reflns_threshold_expression     I>2σ(I)
_refine_ls_structure_factor_coef     Fsqd
_refine_ls_matrix_type     full
_refine_ls_R_factor_all     0.0379
_refine_ls_R_factor_gt     0.0306
_refine_ls_wR_factor_gt     0.0782
_refine_ls_wR_factor_ref     0.0804
_refine_ls_goodness_of_fit_ref     1.093
_refine_ls_restrained_S_all     1.098
_refine_ls_number_reflns     1775
_refine_ls_number_parameters     185
_refine_ls_number_restraints     1
_refine_ls_hydrogen_treatment     constr
_refine_ls_weighting_scheme     calc
_refine_ls_weighting_details
             'calc w = 1/[σ²(Fo²)+(0.0515P)²] where P = (Fo²+2Fc²)/3'
_atom_sites_solution_hydrogens     geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary     difmap
_refine_ls_shift/su_max     0.001
_refine_ls_shift/su_mean     0.000
_refine_diff_density_max     0.162
_refine_diff_density_min     -0.226
_refine_ls_extinction_method     none
_refine_ls_extinction_coef     ?
_refine_ls_abs_structure_details     ?
_refine_ls_abs_structure_Flack     ?
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 0.0000
                         '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 0.0000
                         'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
    'O' 'O' 0.0106 0.0000
                         'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
_computing_data_collection     'SMART (Bruker, 1998)'
_computing_cell_refinement     'SAINT (Bruker, 1999)'
_computing_data_reduction     'SAINT'
_computing_structure_solution     'SHELXS97 (Sheldrick, 1997)'
_computing_structure_refinement     'SHELXL97 (Sheldrick, 1997)'
_computing_molecular_graphics     'SHELXTL (Bruker, 1999)'
_computing_publication_material     'SHELXTL'
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_disorder_assembly
    _atom_site_disorder_group
    _atom_site_type_symbol
    O1 0.8797(2) 0.32719(14) 0.06649(6) 0.0392(3) Uani d . 1 . . O
    O2 0.67897(19) 0.46504(11) 0.18654(6) 0.0315(3) Uani d . 1 . . O
    O3 0.37270(18) 0.15609(13) 0.14385(6) 0.0317(3) Uani d . 1 . . O
    H3 0.2794 0.1898 0.1647 0.048 Uiso calc R 1 . . H
    O4 0.4279(2) 0.25002(13) 0.27149(6) 0.0352(3) Uani d . 1 . . O
    H4 0.3872 0.1696 0.2834 0.053 Uiso calc R 1 . . H
    O5 1.0122(2) 0.25416(16) 0.18538(6) 0.0431(3) Uani d . 1 . . O
    H5 0.9612 0.2856 0.1518 0.065 Uiso calc R 1 . . H
    N1 0.7005(3) 0.42131(17) -0.02001(7) 0.0351(4) Uani d . 1 . . N
    H1A 0.7823 0.4033 -0.0513 0.042 Uiso calc R 1 . . H
    N2 0.5689(2) 0.43856(15) 0.07808(6) 0.0297(3) Uani d . 1 . . N
    C1 0.7326(3) 0.38848(18) 0.04336(9) 0.0314(4) Uani d . 1 . . C
    C2 0.5168(3) 0.48833(18) -0.02782(8) 0.0311(4) Uani d . 1 . . C
    C3 0.4237(3) 0.53647(19) -0.08395(9) 0.0405(5) Uani d . 1 . . C
    H3A 0.4807 0.5239 -0.1250 0.049 Uiso calc R 1 . . H
    C4 0.2427(4) 0.6039(2) -0.07627(9) 0.0432(5) Uani d . 1 . . C
    H4A 0.1730 0.6354 -0.1129 0.052 Uiso calc R 1 . . H
    C5 0.1631(3) 0.62554(19) -0.01487(10) 0.0403(5) Uani d . 1 . . C
    H5A 0.0426 0.6747 -0.0115 0.048 Uiso calc R 1 . . H
    C6 0.2546(3) 0.57719(18) 0.04250(9) 0.0318(4) Uani d . 1 . . C
    C7 0.1634(4) 0.6124(2) 0.10749(9) 0.0448(5) Uani d . 1 . . C
    H7A 0.1234 0.5232 0.1286 0.067 Uiso calc R 1 . . H
    H7B 0.0496 0.6741 0.1012 0.067 Uiso calc R 1 . . H
    H7C 0.2587 0.6624 0.1343 0.067 Uiso calc R 1 . . H
    C8 0.4334(3) 0.50389(17) 0.03394(8) 0.0275(4) Uani d . 1 . . C
    C9 0.5341(3) 0.39709(17) 0.14516(7) 0.0268(4) Uani d . 1 . . C
    H9 0.4024 0.4321 0.1580 0.032 Uiso calc R 1 . . H
    C10 0.5472(3) 0.23236(17) 0.16008(7) 0.0252(4) Uani d . 1 . . C
    H10 0.6578 0.1905 0.1352 0.030 Uiso calc R 1 . . H
    C11 0.6009(3) 0.23129(17) 0.23258(8) 0.0264(3) Uani d . 1 . . C
    H11 0.6729 0.1419 0.2446 0.032 Uiso calc R 1 . . H
    C12 0.7299(3) 0.36694(19) 0.24067(8) 0.0293(4) Uani d . 1 . . C
    H12 0.6956 0.4151 0.2820 0.035 Uiso calc R 1 . . H
    C13 0.9514(3) 0.3409(2) 0.23898(9) 0.0370(4) Uani d . 1 . . C
    H13A 1.0188 0.4347 0.2370 0.044 Uiso calc R 1 . . H
    H13B 0.9912 0.2927 0.2792 0.044 Uiso calc R 1 . . 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
    O1 0.0334(7) 0.0513(8) 0.0329(7) 0.0105(7) 0.0044(6) 0.0011(6)
    O2 0.0397(7) 0.0279(6) 0.0268(6) -0.0024(5) -0.0025(6) 0.0000(5)
    O3 0.0276(7) 0.0393(6) 0.0282(6) -0.0019(6) -0.0008(5) -0.0062(5)
    O4 0.0357(8) 0.0398(7) 0.0300(6) -0.0013(6) 0.0093(5) 0.0006(5)
    O5 0.0306(7) 0.0651(9) 0.0335(7) 0.0098(7) -0.0030(6) -0.0039(6)
    N1 0.0391(10) 0.0436(8) 0.0227(7) 0.0023(8) 0.0052(6) 0.0005(6)
    N2 0.0307(8) 0.0349(7) 0.0235(7) 0.0069(6) 0.0026(6) 0.0031(5)
    C1 0.0343(10) 0.0336(9) 0.0262(8) 0.0020(8) 0.0067(8) 0.0004(7)
    C2 0.0386(11) 0.0271(8) 0.0275(8) -0.0036(8) 0.0015(8) 0.0001(6)
    C3 0.0615(14) 0.0354(9) 0.0246(9) -0.0051(10) -0.0029(9) 0.0049(7)
    C4 0.0586(14) 0.0384(10) 0.0326(10) -0.0030(10) -0.0141(10) 0.0099(8)
    C5 0.0409(12) 0.0343(9) 0.0458(11) 0.0023(9) -0.0107(9) 0.0068(8)
    C6 0.0353(10) 0.0270(8) 0.0329(9) 0.0001(8) -0.0016(8) 0.0028(7)
    C7 0.0450(13) 0.0502(11) 0.0393(10) 0.0186(10) 0.0024(9) 0.0026(9)
    C8 0.0346(10) 0.0240(7) 0.0239(8) -0.0002(7) -0.0039(7) 0.0015(6)
    C9 0.0282(9) 0.0324(8) 0.0196(7) 0.0041(7) 0.0002(7) 0.0005(6)
    C10 0.0231(8) 0.0296(8) 0.0229(8) 0.0007(7) 0.0000(6) -0.0029(6)
    C11 0.0269(9) 0.0286(8) 0.0237(8) 0.0028(7) -0.0001(7) 0.0013(6)
    C12 0.0315(10) 0.0360(9) 0.0203(8) -0.0013(8) -0.0014(7) -0.0009(6)
    C13 0.0314(10) 0.0500(11) 0.0296(9) -0.0036(9) -0.0036(8) 0.0004(8)
_geom_special_details
;
 All esds (except the esd in the dihedral angle between two l.s. planes)
 are estimated using the full covariance matrix.  The cell esds are taken
 into account individually in the estimation of esds in distances, angles
 and torsion angles; correlations between esds in cell parameters are only
 used when they are defined by crystal symmetry.  An approximate (isotropic)
 treatment of cell esds is used for estimating esds involving l.s. planes.
;
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
    O1 C1 . 1.232(2) y
    O2 C9 . 1.433(2) y
    O2 C12 . 1.465(2) y
    O3 C10 . 1.406(2) y
    O3 H3 . 0.82 ?
    O4 C11 . 1.422(2) y
    O4 H4 . 0.82 ?
    O5 C13 . 1.413(2) y
    O5 H5 . 0.82 ?
    N1 C1 . 1.349(2) y
    N1 C2 . 1.390(3) y
    N1 H1A . 0.86 ?
    N2 C1 . 1.390(2) y
    N2 C8 . 1.416(2) y
    N2 C9 . 1.443(2) y
    C2 C3 . 1.380(3) ?
    C2 C8 . 1.390(2) ?
    C3 C4 . 1.376(3) ?
    C3 H3A . 0.93 ?
    C4 C5 . 1.380(3) ?
    C4 H4A . 0.93 ?
    C5 C6 . 1.398(3) ?
    C5 H5A . 0.93 ?
    C6 C8 . 1.389(3) ?
    C6 C7 . 1.500(3) ?
    C7 H7A . 0.96 ?
    C7 H7B . 0.96 ?
    C7 H7C . 0.96 ?
    C9 C10 . 1.535(2) y
    C9 H9 . 0.98 ?
    C10 C11 . 1.527(2) y
    C10 H10 . 0.98 ?
    C11 C12 . 1.521(2) y
    C11 H11 . 0.98 ?
    C12 C13 . 1.512(3) y
    C12 H12 . 0.98 ?
    C13 H13A . 0.97 ?
    C13 H13B . 0.97 ?
loop_
    _geom_angle_atom_site_label_1
    _geom_angle_atom_site_label_2
    _geom_angle_atom_site_label_3
    _geom_angle_site_symmetry_1
    _geom_angle_site_symmetry_3
    _geom_angle
    _geom_angle_publ_flag
    C9 O2 C12 . . 110.03(12) ?
    C10 O3 H3 . . 109.5 ?
    C11 O4 H4 . . 109.5 ?
    C13 O5 H5 . . 109.5 ?
    C1 N1 C2 . . 110.56(15) ?
    C1 N1 H1A . . 124.7 ?
    C2 N1 H1A . . 124.7 ?
    C1 N2 C8 . . 108.94(14) ?
    C1 N2 C9 . . 121.94(14) ?
    C8 N2 C9 . . 127.75(15) ?
    O1 C1 N1 . . 126.81(17) ?
    O1 C1 N2 . . 126.27(16) ?
    N1 C1 N2 . . 106.92(16) ?
    C3 C2 N1 . . 129.80(17) ?
    C3 C2 C8 . . 122.69(19) ?
    N1 C2 C8 . . 107.50(14) ?
    C4 C3 C2 . . 116.76(18) ?
    C4 C3 H3A . . 121.6 ?
    C2 C3 H3A . . 121.6 ?
    C3 C4 C5 . . 120.84(18) ?
    C3 C4 H4A . . 119.6 ?
    C5 C4 H4A . . 119.6 ?
    C4 C5 C6 . . 123.2(2) ?
    C4 C5 H5A . . 118.4 ?
    C6 C5 H5A . . 118.4 ?
    C8 C6 C5 . . 115.39(18) ?
    C8 C6 C7 . . 124.77(17) ?
    C5 C6 C7 . . 119.77(18) ?
    C6 C7 H7A . . 109.5 ?
    C6 C7 H7B . . 109.5 ?
    H7A C7 H7B . . 109.5 ?
    C6 C7 H7C . . 109.5 ?
    H7A C7 H7C . . 109.5 ?
    H7B C7 H7C . . 109.5 ?
    C6 C8 C2 . . 120.96(16) ?
    C6 C8 N2 . . 132.98(15) ?
    C2 C8 N2 . . 106.01(16) ?
    O2 C9 N2 . . 109.77(14) ?
    O2 C9 C10 . . 105.46(13) ?
    N2 C9 C10 . . 115.87(13) ?
    O2 C9 H9 . . 108.5 ?
    N2 C9 H9 . . 108.5 ?
    C10 C9 H9 . . 108.5 ?
    O3 C10 C11 . . 115.12(14) ?
    O3 C10 C9 . . 112.90(15) ?
    C11 C10 C9 . . 102.30(13) ?
    O3 C10 H10 . . 108.7 ?
    C11 C10 H10 . . 108.7 ?
    C9 C10 H10 . . 108.7 ?
    O4 C11 C12 . . 108.07(13) ?
    O4 C11 C10 . . 110.41(14) ?
    C12 C11 C10 . . 103.65(13) ?
    O4 C11 H11 . . 111.5 ?
    C12 C11 H11 . . 111.5 ?
    C10 C11 H11 . . 111.5 ?
    O2 C12 C13 . . 108.08(16) ?
    O2 C12 C11 . . 106.28(13) ?
    C13 C12 C11 . . 115.73(16) ?
    O2 C12 H12 . . 108.9 ?
    C13 C12 H12 . . 108.9 ?
    C11 C12 H12 . . 108.9 ?
    O5 C13 C12 . . 113.09(16) ?
    O5 C13 H13A . . 109.0 ?
    C12 C13 H13A . . 109.0 ?
    O5 C13 H13B . . 109.0 ?
    C12 C13 H13B . . 109.0 ?
    H13A C13 H13B . . 107.8 ?
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_site_symmetry_1
    _geom_torsion_site_symmetry_2
    _geom_torsion_site_symmetry_3
    _geom_torsion_site_symmetry_4
    _geom_torsion
    _geom_torsion_publ_flag
    C2 N1 C1 O1 . . . . 179.10(17) ?
    C2 N1 C1 N2 . . . . -1.60(19) ?
    C8 N2 C1 O1 . . . . 179.31(16) ?
    C9 N2 C1 O1 . . . . -13.1(3) ?
    C8 N2 C1 N1 . . . . 0.00(19) ?
    C9 N2 C1 N1 . . . . 167.63(15) ?
    C1 N1 C2 C3 . . . . -178.43(19) ?
    C1 N1 C2 C8 . . . . 2.6(2) ?
    N1 C2 C3 C4 . . . . -177.87(17) ?
    C8 C2 C3 C4 . . . . 1.0(3) ?
    C2 C3 C4 C5 . . . . 1.9(3) ?
    C3 C4 C5 C6 . . . . -2.3(3) ?
    C4 C5 C6 C8 . . . . -0.4(3) ?
    C4 C5 C6 C7 . . . . 176.7(2) ?
    C5 C6 C8 C2 . . . . 3.2(2) ?
    C7 C6 C8 C2 . . . . -173.65(18) ?
    C5 C6 C8 N2 . . . . -179.61(18) ?
    C7 C6 C8 N2 . . . . 3.5(3) ?
    C3 C2 C8 C6 . . . . -3.7(3) ?
    N1 C2 C8 C6 . . . . 175.37(15) ?
    C3 C2 C8 N2 . . . . 178.47(16) ?
    N1 C2 C8 N2 . . . . -2.47(19) ?
    C1 N2 C8 C6 . . . . -175.91(17) ?
    C9 N2 C8 C6 . . . . 17.4(3) ?
    C1 N2 C8 C2 . . . . 1.55(19) ?
    C9 N2 C8 C2 . . . . -165.15(15) ?
    C12 O2 C9 N2 . . . . -145.15(13) ?
    C12 O2 C9 C10 . . . . -19.67(18) ?
    C1 N2 C9 O2 . . . . 69.80(19) ?
    C8 N2 C9 O2 . . . . -125.05(17) ?
    C1 N2 C9 C10 . . . . -49.5(2) ?
    C8 N2 C9 C10 . . . . 115.67(19) ?
    O2 C9 C10 O3 . . . . 157.36(13) ?
    N2 C9 C10 O3 . . . . -81.04(19) ?
    O2 C9 C10 C11 . . . . 33.03(17) ?
    N2 C9 C10 C11 . . . . 154.64(15) ?
    O3 C10 C11 O4 . . . . -40.83(18) ?
    C9 C10 C11 O4 . . . . 82.01(15) ?
    O3 C10 C11 C12 . . . . -156.36(13) ?
    C9 C10 C11 C12 . . . . -33.52(17) ?
    C9 O2 C12 C13 . . . . 122.87(15) ?
    C9 O2 C12 C11 . . . . -1.96(18) ?
    O4 C11 C12 O2 . . . . -94.45(16) ?
    C10 C11 C12 O2 . . . . 22.73(17) ?
    O4 C11 C12 C13 . . . . 145.58(15) ?
    C10 C11 C12 C13 . . . . -97.24(17) ?
    O2 C12 C13 O5 . . . . -70.0(2) ?
    C11 C12 C13 O5 . . . . 49.0(2) ?
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
    N1 H1A O3 4_555 0.86 2.06 2.876(3) 157
    O3 H3 O5 1_455 0.82 1.94 2.725(2) 160
    O4 H4 O2 3_645 0.82 2.01 2.830(2) 173
    O5 H5 O1 . 0.82 1.87 2.676(2) 168
    C10 H10 O1 . 0.98 2.40 3.072(3) 125
