4-(<i>N</i>-Methylnitramino)pyridine 1-oxide
Zaleski, Jacek; Daszkiewicz, Zdzisław; Kyzioł, Janusz B.; Acta Crystallographica Section C 55 (1999) 1292–1295; doi:10.1107/S0108270199004552

data_2008788
_publ_section_title
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 4-(<i>N</i>-Methylnitramino)pyridine 1-oxide
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_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              1292
_journal_page_last               1295
_journal_paper_doi               10.1107/S0108270199004552
_journal_volume                  55
_journal_year                    1999
_chemical_formula_sum            'C6 H7 N3 O3'
_chemical_formula_weight         169.15
_chemical_name_systematic
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 4-(N-Methylnitramino)-pyridine 1-oxide
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   12.756(3)
_cell_length_b                   6.8700(10)
_cell_length_c                   15.740(3)
_cell_measurement_reflns_used    28
_cell_measurement_temperature    90.00(10)
_cell_measurement_theta_max      23
_cell_measurement_theta_min      18
_cell_volume                     1379.4(5)
_computing_cell_refinement       'Kuma Diffraction Software (Kuma, 1997)'
_computing_data_reduction        'Kuma Diffraction Software'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 1990)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.755
_diffrn_measured_fraction_theta_max 0.755
_diffrn_measurement_device_type  'Kuma KM-4 diffractometer'
_diffrn_measurement_method       \w-\q
_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    0.0315
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       0
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       0
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            1757
_diffrn_reflns_theta_full        30.07
_diffrn_reflns_theta_max         30.87
_diffrn_reflns_theta_min         2.59
_diffrn_standards_decay_%        0.32
_diffrn_standards_interval_count 50
_diffrn_standards_number         2
_exptl_absorpt_coefficient_mu    0.133
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            'light yellow'
_exptl_crystal_density_diffrn    1.629
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             704
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.36
_refine_diff_density_max         0.423
_refine_diff_density_min         -0.386
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.153
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     137
_refine_ls_number_reflns         1757
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.153
_refine_ls_R_factor_all          0.1045
_refine_ls_R_factor_gt           0.0575
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0066P)^2^+6.7646P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.1462
_reflns_number_gt                1183
_reflns_number_total             1757
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            gd1027.cif
_cod_data_source_block           1_at_90_K
_cod_depositor_comments
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The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc w =
1/[\s^2^(Fo^2^)+(0.0066P)^2^+6.7646P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to 'w =
1/[\s^2^(Fo^2^)+(0.0066P)^2^+6.7646P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
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_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               2008788