1-Methyl-5-nitro-1<i>H</i>-imidazole
Diao, Ying; Wang, Wen-Yan; Wei, Zhi-Hua; Wang, Jian-Long; Acta Crystallographica Section E 67 (2011) o3072–; doi:10.1107/S1600536811041705

data_2232512
_publ_section_title
;
 1-Methyl-5-nitro-1<i>H</i>-imidazole
;
_journal_coeditor_code           XU5346
_journal_issue                   11
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o3072
_journal_paper_doi               10.1107/S1600536811041705
_journal_volume                  67
_journal_year                    2011
_chemical_formula_iupac          'C4 H5 N3 O2'
_chemical_formula_moiety         'C4 H5 N3 O2'
_chemical_formula_sum            'C4 H5 N3 O2'
_chemical_formula_weight         127.11
_chemical_name_systematic
;
1-Methyl-5-nitro-1<i>H</i>-imidazole
;
_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'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   5.323(3)
_cell_length_b                   12.664(6)
_cell_length_c                   15.993(8)
_cell_measurement_reflns_used    3500
_cell_measurement_temperature    113(2)
_cell_measurement_theta_max      27.8
_cell_measurement_theta_min      1.6
_cell_volume                     1078.1(10)
_computing_cell_refinement       'CrystalClear (Rigaku/MSC, 2005)'
_computing_data_collection       'CrystalClear (Rigaku/MSC, 2005)'
_computing_data_reduction        'CrystalClear (Rigaku/MSC, 2005)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXTL (Sheldrick, 2008)'
_computing_structure_solution    'SHELXTL (Sheldrick, 2008)'
_diffrn_ambient_temperature      113(2)
_diffrn_detector_area_resol_mean 14.22
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Rigaku Saturn724 CCD'
_diffrn_measurement_method       '\w and \f'
_diffrn_radiation_monochromator  multilayer
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0587
_diffrn_reflns_av_sigmaI/netI    0.0383
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            10144
_diffrn_reflns_theta_full        27.82
_diffrn_reflns_theta_max         27.82
_diffrn_reflns_theta_min         2.55
_exptl_absorpt_coefficient_mu    0.128
_exptl_absorpt_correction_T_max  0.9873
_exptl_absorpt_correction_T_min  0.9625
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(CrystalClear; Rigaku/MSC, 2005)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.566
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             528
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.171
_refine_diff_density_min         -0.324
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.012
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     83
_refine_ls_number_reflns         1272
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.012
_refine_ls_R_factor_all          0.0440
_refine_ls_R_factor_gt           0.0359
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0505P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0840
_refine_ls_wR_factor_ref         0.0884
_reflns_number_gt                1030
_reflns_number_total             1272
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            xu5346.cif
_cod_data_source_block           I
_cod_original_cell_volume        1078.1(9)
_cod_database_code               2232512
_cod_database_fobs_code          2232512