3,5-Dimethyl-4-nitroso-1<i>H</i>-pyrazole
Safyanova, Inna; Dudarenko, Nikolay M.; Pavlenko, Vadim A.; Iskenderov, Turganbay S.; Haukka, Matti; Acta Crystallographica Section E 67 (2011) o2520–o2521; doi:10.1107/S1600536811033794

data_2231569
_publ_section_title
;
 3,5-Dimethyl-4-nitroso-1<i>H</i>-pyrazole
;
_journal_coeditor_code           JH2317
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2520
_journal_page_last               o2521
_journal_paper_doi               10.1107/S1600536811033794
_journal_volume                  67
_journal_year                    2011
_chemical_formula_iupac          'C5 H7 N3 O'
_chemical_formula_moiety         'C5 H7 N3 O'
_chemical_formula_sum            'C5 H7 N3 O'
_chemical_formula_weight         125.14
_chemical_name_systematic
;
3,5-Dimethyl-4-nitroso-1<i>H</i>-pyrazole
;
_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'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 94.613(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   4.0268(2)
_cell_length_b                   15.3793(7)
_cell_length_c                   19.6627(9)
_cell_measurement_reflns_used    4238
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      1.00
_cell_volume                     1213.75(10)
_computing_cell_refinement       'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 2000)'
_computing_data_reduction        'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'DIAMOND (Brandenburg, 2008)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SIR2004 (Burla <i>et al.</i>, 2005)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '\f scans and \w scans with \k offset'
_diffrn_radiation_monochromator  'horizontally mounted graphite crystal'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0400
_diffrn_reflns_av_sigmaI/netI    0.0610
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -4
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            9003
_diffrn_reflns_theta_full        27.39
_diffrn_reflns_theta_max         27.39
_diffrn_reflns_theta_min         2.46
_exptl_absorpt_coefficient_mu    0.101
_exptl_absorpt_correction_T_max  0.9874
_exptl_absorpt_correction_T_min  0.9548
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(DENZO/SCALEPACK; Otwinowski & Minor, 1997)'
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.370
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             528
_exptl_crystal_size_max          0.46
_exptl_crystal_size_mid          0.33
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.231
_refine_diff_density_min         -0.249
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     175
_refine_ls_number_reflns         2747
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.0720
_refine_ls_R_factor_gt           0.0413
_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^)+(0.0516P)^2^+0.0988P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0973
_refine_ls_wR_factor_ref         0.1092
_reflns_number_gt                1866
_reflns_number_total             2747
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            jh2317.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2231569
_cod_database_fobs_code          2231569