4-Methyl-3-nitrobenzonitrile
Cui, Li-Jing; Dai, Jing; Acta Crystallographica Section E 64 (2008) o1898–; doi:10.1107/S1600536808027414

data_2219726
_publ_section_title
;
 4-Methyl-3-nitrobenzonitrile
;
_journal_coeditor_code           WK2090
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1898
_journal_paper_doi               10.1107/S1600536808027414
_journal_volume                  64
_journal_year                    2008
_chemical_formula_moiety         'C8 H6 N2 O2'
_chemical_formula_sum            'C8 H6 N2 O2'
_chemical_formula_weight         162.15
_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(3)
_cell_angle_beta                 99.13(3)
_cell_angle_gamma                90.00(3)
_cell_formula_units_Z            4
_cell_length_a                   3.9088(8)
_cell_length_b                   13.576(3)
_cell_length_c                   14.819(4)
_cell_measurement_reflns_used    1764
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      27.59
_cell_measurement_theta_min      3.07
_cell_volume                     776.4(3)
_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  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      298(2)
_diffrn_detector_area_resol_mean 13.6612
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Rigaku Mercury2'
_diffrn_measurement_method       \w
_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  0.0367
_diffrn_reflns_av_sigmaI/netI    0.0335
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            7589
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         3.00
_exptl_absorpt_coefficient_mu    0.103
_exptl_absorpt_correction_T_max  0.990
_exptl_absorpt_correction_T_min  0.965
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(CrystalClear; Rigaku/MSC, 2005)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.387
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             336
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.331
_refine_diff_density_min         -0.280
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.097
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     109
_refine_ls_number_reflns         1753
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.097
_refine_ls_R_factor_all          0.0867
_refine_ls_R_factor_gt           0.0676
_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^)+(0.1036P)^2^+0.2336P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1917
_refine_ls_wR_factor_ref         0.2077
_reflns_number_gt                1336
_reflns_number_total             1761
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            wk2090.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2219726
_cod_database_fobs_code          2219726