Proton ordering in (NH~4~)~3~H(SO~4~)~2~ at low-temperature phase transitions
Sohn, Yoo Jung; Sparta, Karine M.; Prinz, Sebastian; Meven, Martin; Roth, Georg; Heger, Gernot; Acta Crystallographica Section B 69 (2013) 336–343; doi:10.1107/S2052519213013092

data_2105486
_publ_section_title
;
 Proton ordering in (NH~4~)~3~H(SO~4~)~2~ at low-temperature phase
 transitions
;
_journal_coeditor_code           HW5024
_journal_issue                   4
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              336
_journal_page_last               343
_journal_paper_doi               10.1107/S2052519213013092
_journal_volume                  69
_journal_year                    2013
_chemical_formula_moiety         'H O8 S2, 3(H4 N)'
_chemical_formula_sum            'H13 N3 O8 S2'
_chemical_formula_weight         247.2
_chemical_name_systematic        ' ?'
_space_group_IT_number           13
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yac'
_symmetry_space_group_name_H-M   'P 1 2/n 1'
_cell_angle_alpha                90
_cell_angle_beta                 101.75(5)
_cell_angle_gamma                90
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_cell_length_b                   5.849(3)
_cell_length_c                   10.131(5)
_cell_measurement_reflns_used    19
_cell_measurement_temperature    250
_cell_measurement_theta_max      18.57
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_computing_molecular_graphics    'Atoms 5.1'
_computing_publication_material
'Jana2006 (Petricek, Dusek & Palatinus, 2006)'
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'Jana2006 (Petricek, Dusek & Palatinus, 2006)'
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_diffrn_measurement_device       'single-crystal diffractometer HEiDi'
_diffrn_measurement_device_type  '4-circle diffractometer'
_diffrn_measurement_method       '\w scans'
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_diffrn_radiation_source         'nuclear reactor'
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_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.829(2)
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       cube
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_exptl_crystal_size_max          3
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'B-C type 1 Lorentzian isotropic (Becker & Coppens, 1974)'
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