Melaminium sulfate
Zhu, Bao-Yong; Cui, De-Liang; Jing, Hai-Peng; Acta Crystallographica Section E 64 (2008) o351–o351; doi:10.1107/S1600536807067463

data_2217427
_publ_section_title
;
 Melaminium sulfate
;
_journal_coeditor_code           BT2656
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o351
_journal_page_last               o351
_journal_paper_doi               10.1107/S1600536807067463
_journal_volume                  64
_journal_year                    2008
_chemical_formula_iupac          'C3 H8 N6 2+, S O4 2-'
_chemical_formula_moiety         'C3 H8 N6 2+, S O4 2-'
_chemical_formula_sum            'C3 H8 N6 O4 S'
_chemical_formula_weight         224.21
_chemical_name_systematic
;
Melaminium sulfate
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 129.7390(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   18.5787(3)
_cell_length_b                   8.6272(2)
_cell_length_c                   12.7945(4)
_cell_measurement_reflns_used    2920
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.76
_cell_volume                     1576.94(7)
_computing_cell_refinement       'APEX2 (Bruker, 2005)'
_computing_data_collection       'APEX2 (Bruker, 2005)'
_computing_data_reduction        'APEX2 (Bruker, 2005)'
_computing_molecular_graphics    'SHELXTL (Bruker, 1997)'
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Altomare <i>et al.</i>,  1999)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker APEX2 CCD'
_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  0.0129
_diffrn_reflns_av_sigmaI/netI    0.0167
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            3793
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         2.76
_exptl_absorpt_coefficient_mu    0.416
_exptl_absorpt_correction_T_max  0.8996
_exptl_absorpt_correction_T_min  0.8785
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(APEX2; Bruker, 2005)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.889
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             928
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.26
_refine_diff_density_max         0.479
_refine_diff_density_min         -0.454
_refine_ls_extinction_coef       0.0037(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 1997)'
_refine_ls_goodness_of_fit_ref   0.998
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     136
_refine_ls_number_reflns         1794
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.998
_refine_ls_R_factor_all          0.0333
_refine_ls_R_factor_gt           0.0312
_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^)+(0.041P)^2^+3.6165P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0864
_refine_ls_wR_factor_ref         0.0885
_reflns_number_gt                1672
_reflns_number_total             1794
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            bt2656.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      'C 2/c'
_cod_database_code               2217427
_cod_database_fobs_code          2217427