<i>N,N</i>-Dimethylbiguanidium bromide
Lu, Liping; Zhang, Hongmei; Feng, Sisi; Zhu, Miaoli; Acta Crystallographica Section E 60 (2004) o640–o641; doi:10.1107/S160053680400652X

data_2203518
_publ_section_title
;
 <i>N,N</i>-Dimethylbiguanidium bromide
;
_journal_issue                   4
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o640
_journal_page_last               o641
_journal_paper_doi               10.1107/S160053680400652X
_journal_volume                  60
_journal_year                    2004
_chemical_formula_iupac          'C4 H12 N5 1+, Br 1-'
_chemical_formula_moiety         'C4 H12 N5 1+, Br 1-'
_chemical_formula_sum            'C4 H12 Br N5'
_chemical_formula_weight         210.10
_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                 114.807(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.2094(18)
_cell_length_b                   14.203(3)
_cell_length_c                   8.1261(18)
_cell_measurement_reflns_used    2039
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      26.75
_cell_measurement_theta_min      2.73
_cell_volume                     860.1(3)
_computing_cell_refinement       'SAINT (Bruker, 2000)'
_computing_data_collection       'SMART (Bruker, 2000)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXTL/PC (Sheldrick, 1999)'
_computing_publication_material  SHELXTL/PC
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker SMART 1K CCD area-detector'
_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  0.0688
_diffrn_reflns_av_sigmaI/netI    0.0551
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            4122
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         2.73
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    4.721
_exptl_absorpt_correction_T_max  0.094
_exptl_absorpt_correction_T_min  0.064
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 2000)'
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.623
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             424
_exptl_crystal_size_max          0.70
_exptl_crystal_size_mid          0.50
_exptl_crystal_size_min          0.50
_refine_diff_density_max         0.447
_refine_diff_density_min         -0.683
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.970
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     93
_refine_ls_number_reflns         1516
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.970
_refine_ls_R_factor_all          0.0422
_refine_ls_R_factor_gt           0.0337
_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^)+(0.0418P)^2^] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0729
_refine_ls_wR_factor_ref         0.0750
_reflns_number_gt                1237
_reflns_number_total             1516
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            wn6232.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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_H-M      'P 21/c'
_cod_database_code               2203518
_cod_database_fobs_code          2203518