##############################################################################
###                                                                        ###
###        Electronic paper (Acta Crystallographica Section E)             ###
###                                                                        ###
##############################################################################
#                                                                            #
# 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/  #
# cif/home.html                                                              #
#                                                                            #
#            Copyright International Union of Crystallography                #
#                                                                            #
##############################################################################
                                             
data_global
_audit_creation_method     'from SHELXL97 CIF and IUCr SHELXL97-template'
_journal_date_recd_electronic     2005-06-21
_journal_date_accepted     2005-06-29
_journal_name_full     'Acta Crystallographica, Section E'
_journal_year     2005
_journal_volume     61
_journal_issue      8
_journal_page_first     o2496
_journal_page_last     o2498
_journal_paper_category     EO
_journal_coeditor_code     AC6179
_publ_contact_author_name     'Dr Melanie Rademeyer'
_publ_contact_author_address
;
School of Chemistry
University of KwaZulu-Natal
Durban
4041
South Africa
;
_publ_contact_author_email     rademeyerm@ukzn.ac.za
_publ_contact_author_fax     '+27 31 260 3091'
_publ_contact_author_phone     '+27 31 260 3097'
_publ_section_title
;
4-Aminopyridinium nitrate
;
loop_
    _publ_author_name
    _publ_author_address
    'Rademeyer, Melanie'
;
School of Chemistry
University of KwaZulu-Natal
Howard College Campus
Durban 4041
South Africa
;
data_I
_audit_creation_method     SHELXL97
_chemical_name_systematic
;
4-Aminopyridinium nitrate
;
_chemical_name_common     ?
_chemical_formula_moiety     'C5 H7 N2 + , N O3 -'
_chemical_formula_sum     'C5 H7 N3 O3'
_chemical_formula_iupac     'C5 H7 N2 + , N O3 -'
_chemical_formula_weight     157.14
_chemical_melting_point     ?
_symmetry_cell_setting     monoclinic
_symmetry_space_group_name_H-M     'P 21/c'
_symmetry_space_group_name_Hall     '-P 2ybc'
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     9.192(4)
_cell_length_b     6.996(4)
_cell_length_c     10.869(5)
_cell_angle_alpha     90.00
_cell_angle_beta     93.60(4)
_cell_angle_gamma     90.00
_cell_volume     697.5(6)
_cell_formula_units_Z     4
_cell_measurement_reflns_used     209
_cell_measurement_theta_min     2
_cell_measurement_theta_max     30
_cell_measurement_temperature     200(2)
_exptl_crystal_description     needle
_exptl_crystal_colour     colourless
_exptl_crystal_size_max     0.20
_exptl_crystal_size_mid     0.20
_exptl_crystal_size_min     0.20
_exptl_crystal_density_diffrn     1.496
_exptl_crystal_density_meas     ?
_exptl_crystal_density_method     'not measured'
_exptl_crystal_F_000     328
_exptl_absorpt_coefficient_mu     0.125
_exptl_absorpt_correction_type     none
_exptl_absorpt_process_details     ?
_exptl_absorpt_correction_T_min     ?
_exptl_absorpt_correction_T_max     ?
_exptl_special_details
;
;
_diffrn_ambient_temperature     200(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     'Oxford Excalibur2'
_diffrn_measurement_method     ω/2θ
_diffrn_detector_area_resol_mean     ?
_diffrn_reflns_number     6090
_diffrn_reflns_av_R_equivalents     0.0361
_diffrn_reflns_av_sigmaI/netI     0.0535
_diffrn_reflns_theta_min     4.18
_diffrn_reflns_theta_max     31.78
_diffrn_reflns_theta_full     25.00
_diffrn_measured_fraction_theta_max     0.936
_diffrn_measured_fraction_theta_full     0.993
_diffrn_reflns_limit_h_min     -13
_diffrn_reflns_limit_h_max     13
_diffrn_reflns_limit_k_min     -10
_diffrn_reflns_limit_k_max     8
_diffrn_reflns_limit_l_min     -16
_diffrn_reflns_limit_l_max     15
_diffrn_standards_number     ?
_diffrn_standards_interval_count     ?
_diffrn_standards_interval_time     ?
_diffrn_standards_decay_%     '<2'
_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     2220
_reflns_number_gt     1369
_reflns_threshold_expression     I>2σ(I)
_refine_ls_structure_factor_coef     Fsqd
_refine_ls_matrix_type     full
_refine_ls_R_factor_all     0.0860
_refine_ls_R_factor_gt     0.0477
_refine_ls_wR_factor_gt     0.1019
_refine_ls_wR_factor_ref     0.1158
_refine_ls_goodness_of_fit_ref     0.943
_refine_ls_restrained_S_all     0.943
_refine_ls_number_reflns     2220
_refine_ls_number_parameters     108
_refine_ls_number_restraints     0
_refine_ls_hydrogen_treatment     mixed
_refine_ls_weighting_scheme     calc
_refine_ls_weighting_details
             'calc w = 1/[σ²(Fo²)+(0.0545P)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     0.002
_refine_ls_shift/su_mean     0.000
_refine_diff_density_max     0.219
_refine_diff_density_min     -0.231
_refine_ls_extinction_method     none
_refine_ls_extinction_coef     ?
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'
_computing_data_collection     'CrysAlis CCD (Oxford Diffraction, 2003)'
_computing_cell_refinement     'CrysAlis CCD'
_computing_data_reduction     'CrysAlis RED (Oxford Diffraction, 2003)'
_computing_structure_solution     'SHELXL97 (Sheldrick, 1997)'
_computing_structure_refinement     'SHELXL97 (Sheldrick, 1997)'
_computing_molecular_graphics     'ORTEP-3 for Windows (Farrugia, 1997)'
_computing_publication_material
                                'WinGX (Farrugia, 1999) and PLATON (Spek, 2003)'
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
    H1A 0.5501(19) 0.193(2) 0.9511(17) 0.054(5) Uiso d . 1 . . H
    H1B 0.577(2) 0.104(2) 0.8252(19) 0.062(6) Uiso d . 1 . . H
    O1 0.77850(11) 0.05911(14) 0.74230(9) 0.0353(3) Uani d . 1 . . O
    N1 0.51723(13) 0.13733(18) 0.87877(13) 0.0331(3) Uani d . 1 . . N
    C1 0.37418(14) 0.12040(16) 0.85447(12) 0.0247(3) Uani d . 1 . . C
    O2 0.62171(11) 0.13015(15) 0.59360(10) 0.0449(3) Uani d . 1 . . O
    N2 0.07612(13) 0.09205(16) 0.80423(12) 0.0326(3) Uani d . 1 . . N
    H2A -0.0165 0.0849 0.7879 0.039 Uiso calc R 1 . . H
    N3 0.75137(12) 0.11466(15) 0.63267(11) 0.0289(3) Uani d . 1 . . N
    C5 0.27392(14) 0.17066(19) 0.94304(12) 0.0281(3) Uani d . 1 . . C
    H5 0.3079 0.2132 1.0206 0.034 Uiso calc R 1 . . H
    C2 0.31506(15) 0.04882(18) 0.74069(12) 0.0292(3) Uani d . 1 . . C
    H2 0.3767 0.0091 0.6810 0.035 Uiso calc R 1 . . H
    C4 0.12835(15) 0.15669(18) 0.91469(13) 0.0322(3) Uani d . 1 . . C
    H4 0.0636 0.1926 0.9729 0.039 Uiso calc R 1 . . H
    O3 0.85311(12) 0.15115(16) 0.56697(9) 0.0431(3) Uani d . 1 . . O
    C3 0.16864(16) 0.03793(19) 0.71823(13) 0.0321(3) Uani d . 1 . . C
    H3 0.1308 -0.0075 0.6424 0.039 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 0.0318(6) 0.0452(6) 0.0290(5) 0.0023(4) 0.0024(4) 0.0032(4)
    N1 0.0240(6) 0.0430(7) 0.0327(7) -0.0007(5) 0.0042(5) 0.0001(6)
    C1 0.0255(7) 0.0217(6) 0.0271(7) 0.0022(5) 0.0029(5) 0.0042(5)
    O2 0.0286(6) 0.0582(7) 0.0467(7) -0.0011(5) -0.0063(5) 0.0069(5)
    N2 0.0233(6) 0.0341(6) 0.0399(7) -0.0003(4) -0.0022(5) 0.0041(5)
    N3 0.0268(6) 0.0288(6) 0.0310(6) -0.0025(4) 0.0026(5) -0.0031(5)
    C5 0.0285(7) 0.0301(7) 0.0259(7) 0.0019(5) 0.0023(5) -0.0016(5)
    C2 0.0347(8) 0.0265(7) 0.0267(7) 0.0032(5) 0.0058(6) -0.0007(5)
    C4 0.0316(8) 0.0315(7) 0.0342(8) 0.0063(6) 0.0087(6) 0.0028(6)
    O3 0.0382(6) 0.0555(7) 0.0369(6) -0.0103(5) 0.0137(5) -0.0002(5)
    C3 0.0376(8) 0.0300(7) 0.0282(7) -0.0012(6) -0.0029(6) -0.0012(6)
_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 N3 . 1.2632(15) ?
    N1 C1 . 1.3301(18) ?
    N1 H1A . 0.913(19) ?
    N1 H1B . 0.86(2) ?
    C1 C2 . 1.4110(19) ?
    C1 C5 . 1.4181(18) ?
    O2 N3 . 1.2446(15) ?
    N2 C4 . 1.3431(18) ?
    N2 C3 . 1.3564(19) ?
    N2 H2A . 0.8600 ?
    N3 O3 . 1.2383(15) ?
    C5 C4 . 1.3577(19) ?
    C5 H5 . 0.9300 ?
    C2 C3 . 1.355(2) ?
    C2 H2 . 0.9300 ?
    C4 H4 . 0.9300 ?
    C3 H3 . 0.9300 ?
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
    C1 N1 H1A . . 118.6(11) ?
    C1 N1 H1B . . 120.6(14) ?
    H1A N1 H1B . . 120.6(18) ?
    N1 C1 C2 . . 121.81(13) ?
    N1 C1 C5 . . 121.31(13) ?
    C2 C1 C5 . . 116.87(12) ?
    C4 N2 C3 . . 120.37(12) ?
    C4 N2 H2A . . 119.8 ?
    C3 N2 H2A . . 119.8 ?
    O3 N3 O2 . . 121.80(13) ?
    O3 N3 O1 . . 119.72(12) ?
    O2 N3 O1 . . 118.48(12) ?
    C4 C5 C1 . . 120.09(13) ?
    C4 C5 H5 . . 120.0 ?
    C1 C5 H5 . . 120.0 ?
    C3 C2 C1 . . 120.10(13) ?
    C3 C2 H2 . . 120.0 ?
    C1 C2 H2 . . 120.0 ?
    N2 C4 C5 . . 121.27(13) ?
    N2 C4 H4 . . 119.4 ?
    C5 C4 H4 . . 119.4 ?
    C2 C3 N2 . . 121.25(13) ?
    C2 C3 H3 . . 119.4 ?
    N2 C3 H3 . . 119.4 ?
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
    N1 C1 C5 C4 . . . . 178.28(13) ?
    C2 C1 C5 C4 . . . . -2.77(18) ?
    N1 C1 C2 C3 . . . . -178.43(13) ?
    C5 C1 C2 C3 . . . . 2.63(18) ?
    C3 N2 C4 C5 . . . . 0.37(19) ?
    C1 C5 C4 N2 . . . . 1.3(2) ?
    C1 C2 C3 N2 . . . . -1.1(2) ?
    C4 N2 C3 C2 . . . . -0.5(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
    _geom_hbond_publ_flag
    N1 H1B O2 . 0.86(2) 2.58(2) 3.302(2) 142.5(17) yes
    N1 H1B O1 . 0.86(2) 2.14(2) 2.952(2) 159.3(19) yes
    N2 H2A O1 1_455 0.88(2) 1.90(2) 2.784(2) 174.6(18) yes
    N2 H2A O3 1_455 0.88(2) 2.658(19) 3.218(2) 122.1(15) yes
    N2 H2A N3 1_455 0.88(2) 2.63(2) 3.421(2) 149.2(16) yes
