2-Aminobenzimidazolium hydrogen sulfate
You, Wei; Fan, Ying; Qian, Hui-Fen; Yao, Cheng; Huang, Wei; Acta Crystallographica Section E 65 (2009) o115–; doi:10.1107/S1600536808041706

data_2220591
_publ_section_title
;
 2-Aminobenzimidazolium hydrogen sulfate
;
_journal_coeditor_code           NG2522
_journal_issue                   1
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o115
_journal_paper_doi               10.1107/S1600536808041706
_journal_volume                  65
_journal_year                    2009
_chemical_formula_iupac          'C7 H8 N3 +, H S1 O4 -'
_chemical_formula_moiety         'C7 H8 N3 +, H O4 S -'
_chemical_formula_sum            'C7 H9 N3 O4 S'
_chemical_formula_weight         231.23
_chemical_name_systematic
;
2-Aminobenzimidazolium hydrogen sulfate
;
_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                 99.025(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.855(6)
_cell_length_b                   13.049(7)
_cell_length_c                   7.082(4)
_cell_measurement_reflns_used    1841
_cell_measurement_temperature    291(2)
_cell_measurement_theta_max      0.968
_cell_measurement_theta_min      0.950
_cell_volume                     990.7(9)
_computing_cell_refinement       'SAINT (Bruker, 2000)'
_computing_data_collection       'SMART (Bruker, 2000)'
_computing_data_reduction        'SAINT (Bruker, 2000)'
_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      291(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker SMART'
_diffrn_measurement_method       '\f and \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  0.0572
_diffrn_reflns_av_sigmaI/netI    0.0472
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            5083
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         2.46
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.326
_exptl_absorpt_correction_T_max  0.9682
_exptl_absorpt_correction_T_min  0.9497
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2000)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.550
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             480
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.231
_refine_diff_density_min         -0.348
_refine_ls_extinction_coef       0
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 2008)'
_refine_ls_goodness_of_fit_ref   0.964
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     136
_refine_ls_number_reflns         1841
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.964
_refine_ls_R_factor_all          0.0509
_refine_ls_R_factor_gt           0.0380
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0593P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0973
_refine_ls_wR_factor_ref         0.1032
_reflns_number_gt                1408
_reflns_number_total             1841
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ng2522.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2220591
_cod_database_fobs_code          2220591