4-Amino-1-(4-nitrobenzyl)pyridinium bromide
Sundar, T. V.; Parthasarathi, V.; Ravikumar, K.; Venkatesan, P.; Nallu, M.; Acta Crystallographica Section E 62 (2006) o1118–o1120; doi:10.1107/S1600536806005605

data_2208301
_publ_section_title
;
 4-Amino-1-(4-nitrobenzyl)pyridinium bromide
;
_journal_coeditor_code           CV6638
_journal_issue                   3
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1118
_journal_page_last               o1120
_journal_paper_doi               10.1107/S1600536806005605
_journal_volume                  62
_journal_year                    2006
_chemical_formula_iupac          'C12 H12 N3 O2 +, Br -'
_chemical_formula_moiety         'C12 H12 N3 O2 +, Br -'
_chemical_formula_sum            'C12 H12 Br N3 O2'
_chemical_formula_weight         310.16
_chemical_melting_point          562.0(10)
_chemical_name_systematic
;
4-Amino-1-(4-nitrobenzyl)pyridinium bromide
;
_space_group_IT_number           64
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-C 2ac 2'
_symmetry_space_group_name_H-M   'C m c a'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   6.7257(4)
_cell_length_b                   14.3806(8)
_cell_length_c                   26.0364(15)
_cell_measurement_reflns_used    6556
_cell_measurement_temperature    273(2)
_cell_measurement_theta_max      53.138
_cell_measurement_theta_min      5.391
_cell_volume                     2518.2(3)
_computing_cell_refinement       'SAINT (Bruker, 2001)'
_computing_data_collection       'SMART (Bruker, 2001)'
_computing_data_reduction        SAINT
_computing_molecular_graphics
;
ORTEP-3 (Farrugia, 1997), PLATON (Spek, 2003)
and Qmol (Gans & Shalloway, 2001)
;
_computing_publication_material  'SHELXL97 and PARST (Nardelli, 1995)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'DIRDIF99 (Beurskens <i>et al.</i>,  1999)'
_diffrn_ambient_temperature      273(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device       'Bruker SMART APEX CCD area-detector'
_diffrn_measurement_device_type  'Bruker SMART CCD area-detector'
_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  0.0317
_diffrn_reflns_av_sigmaI/netI    0.0242
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            11396
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.83
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    3.262
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.636
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1248
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.196
_refine_diff_density_min         -0.383
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     111
_refine_ls_number_reflns         1205
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0264
_refine_ls_R_factor_gt           0.0244
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.033P)^2^+2.5916P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0655
_refine_ls_wR_factor_ref         0.0677
_reflns_number_gt                1134
_reflns_number_total             1205
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            cv6638.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_chemical_melting_point' value '561--563' was changed to '562.0(10)'
- the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 

The following automatic conversions were performed:

'_chemical_melting_point' value '561--563' was changed to '562.0(10)'
- the average value was taken and precision was
estimated.

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_Hall     '-C 2bc 2'
_cod_original_formula_sum        'C12 H12 Br1 N3 O2'
_cod_database_code               2208301