#------------------------------------------------------------------------------
#$Date: 2017-10-13 02:48:21 +0200 (vie 13 de oct de 2017) $
#$Revision: 201957 $
#$URL: svn://www.crystallography.net/cod/cif/2/01/10/2011044.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_2011044
loop_
_publ_author_name
'Batsanov, Andrei S.'
_publ_section_title
;
 3,5-Difluoro-4-nitropyridine N-oxide and
 3,5-diamino-4-nitropyridine N-oxide monohydrate
;
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              e269
_journal_page_last               e270
_journal_paper_doi               10.1107/S0108270100006636
_journal_volume                  56
_journal_year                    2000
_chemical_formula_moiety         'C5 H2 F2 N2 O3'
_chemical_formula_sum            'C5 H2 F2 N2 O3'
_chemical_formula_weight         176.09
_chemical_melting_point          397.15
_chemical_name_systematic
;
 3,5-difluoro-4-nitropyridine N-oxide
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 104.120(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   5.479(2)
_cell_length_b                   10.840(4)
_cell_length_c                   11.159(3)
_cell_measurement_reflns_used    449
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      23.0
_cell_measurement_theta_min      10.0
_cell_volume                     642.7(4)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Siemens, 1995)'
_computing_data_reduction        'SAINT (Siemens, 1995)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Bruker, 1997)'
_diffrn_ambient_temperature      295(2)
_diffrn_detector_area_resol_mean 8
_diffrn_measured_fraction_theta_full .997
_diffrn_measured_fraction_theta_max .997
_diffrn_measurement_device_type  'SMART 1K CCD area-detector'
_diffrn_measurement_method       ω
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     .71073
_diffrn_reflns_av_R_equivalents  .032
_diffrn_reflns_av_sigmaI/netI    .0284
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            4314
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.66
_diffrn_standards_decay_%        4.6
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    .186
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            'light yellow'
_exptl_crystal_density_diffrn    1.820
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             352
_exptl_crystal_size_max          .35
_exptl_crystal_size_mid          .25
_exptl_crystal_size_min          .20
_refine_diff_density_max         .163
_refine_diff_density_min         -.151
_refine_ls_extinction_coef       .054(5)
_refine_ls_extinction_method     SHELXTL
_refine_ls_goodness_of_fit_ref   1.143
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     118
_refine_ls_number_reflns         1469
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.143
_refine_ls_R_factor_all          .064
_refine_ls_R_factor_gt           .040
_refine_ls_shift/su_max          .003
_refine_ls_shift/su_mean         .000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[σ²(Fo²)+(0.0300P)²+0.2547P] where P = (Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         .104
_reflns_number_gt                1086
_reflns_number_total             1469
_reflns_threshold_expression     I>2σ(I)
_cod_data_source_file            qa0293.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '124\% C' was changed to '397.15' -
it was converted from degrees Celsius(C) to Kelvins(K).

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 

The following automatic conversions were performed:

'_chemical_melting_point' value '124\% C' was changed to '397.15' -
it was converted from degrees Celsius(C) to Kelvins(K).

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2011044
_cod_database_fobs_code          2011044
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'
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
N1 .6315(3) .53826(15) .35891(14) .0434(4) Uani d . 1 . . N
C2 .6757(4) .61027(19) .46240(19) .0440(5) Uani d . 1 . . C
H2 .817(4) .594(2) .524(2) .061(7) Uiso d . 1 . . H
C3 .5163(4) .70703(18) .46799(17) .0420(5) Uani d . 1 . . C
C4 .3073(3) .73343(17) .37154(17) .0400(4) Uani d . 1 . . C
C5 .2711(3) .65693(18) .26861(17) .0418(5) Uani d . 1 . . C
C6 .4314(4) .56114(19) .26238(19) .0452(5) Uani d . 1 . . C
H6 .411(4) .511(2) .195(2) .056(6) Uiso d . 1 . . H
O1 .7806(3) .44597(15) .35385(14) .0640(5) Uani d . 1 . . O
F3 .5653(2) .77428(13) .57141(11) .0638(4) Uani d . 1 . . F
N4 .1388(3) .83620(16) .37957(16) .0493(4) Uani d . 1 . . N
O41 -.0870(3) .81918(16) .33561(18) .0714(5) Uani d . 1 . . O
O42 .2333(3) .93172(14) .42902(16) .0674(5) Uani d . 1 . . O
F5 .0801(2) .67666(12) .17059(11) .0640(4) Uani d . 1 . . F
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
N1 .0450(9) .0417(9) .0425(9) .0058(7) .0086(7) .0026(7)
C2 .0400(10) .0500(11) .0394(10) .0006(9) .0045(8) .0022(9)
C3 .0418(10) .0464(11) .0373(10) -.0039(8) .0087(8) -.0033(8)
C4 .0369(10) .0377(9) .0463(11) -.0017(8) .0116(8) .0028(8)
C5 .0382(10) .0417(10) .0401(10) -.0022(8) -.0011(8) .0042(8)
C6 .0504(12) .0426(11) .0395(10) .0003(9) .0047(9) -.0021(9)
O1 .0658(10) .0593(10) .0620(10) .0265(8) .0062(8) -.0039(8)
F3 .0642(8) .0720(9) .0491(7) .0071(6) .0017(6) -.0199(6)
N4 .0483(10) .0462(10) .0556(11) .0058(8) .0169(8) .0066(8)
O41 .0436(9) .0709(11) .1007(14) .0100(8) .0194(9) .0095(10)
O42 .0835(12) .0447(9) .0731(11) .0051(8) .0175(9) -.0089(8)
F5 .0578(8) .0642(8) .0554(8) .0093(6) -.0144(6) -.0037(6)
loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
C C .0033 .0016 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
H H .0000 .0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
N N .0061 .0033 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
O O .0106 .0060 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
F F .0171 .0103 '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
O1 N1 C6 119.96(17)
O1 N1 C2 119.51(17)
C6 N1 C2 120.52(17)
N1 C2 C3 119.39(19)
N1 C2 H2 117.4(15)
C3 C2 H2 123.1(15)
F3 C3 C2 117.34(18)
F3 C3 C4 120.55(17)
C2 C3 C4 122.09(18)
C5 C4 C3 116.05(17)
C5 C4 N4 122.63(18)
C3 C4 N4 121.31(17)
F5 C5 C6 117.61(18)
F5 C5 C4 120.45(17)
C6 C5 C4 121.92(18)
N1 C6 C5 120.02(19)
N1 C6 H6 117.5(14)
C5 C6 H6 122.5(14)
O42 N4 O41 125.44(18)
O42 N4 C4 117.81(18)
O41 N4 C4 116.76(18)
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
N1 O1 . 1.301(2) yes
N1 C6 . 1.359(3) yes
N1 C2 . 1.366(3) yes
C2 C3 . 1.376(3) yes
C2 H2 . .92(2) ?
C3 F3 . 1.336(2) yes
C3 C4 . 1.396(3) yes
C4 C5 . 1.391(3) yes
C4 N4 . 1.464(2) yes
C5 F5 . 1.334(2) yes
C5 C6 . 1.372(3) ?
C6 H6 . .91(2) ?
N4 O42 . 1.227(2) yes
N4 O41 . 1.228(2) yes
loop_
_cod_related_entry_id
_cod_related_entry_database
_cod_related_entry_code
1 ChemSpider 8854191
