Ammonium and Isopropylammonium Salts of the Fumaric Acid Dianion
Hosomi, Hiroyuki; Ito, Yoshikatsu; Ohba, Shigeru; Acta Crystallographica Section C 54 (1998) 142–145; doi:10.1107/S0108270197013796

data_2006947
_publ_section_title
;
 Ammonium and Isopropylammonium Salts of the Fumaric Acid Dianion
;
_journal_issue                   1
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              142
_journal_page_last               145
_journal_paper_doi               10.1107/S0108270197013796
_journal_volume                  54
_journal_year                    1998
_chemical_formula_iupac          '[N H4]2 1+ , (C4 H2 O4) 2-'
_chemical_formula_moiety         '(N H4 1+)2, (C4 H2 O4 2-)'
_chemical_formula_sum            'C4 H10 N2 O4'
_chemical_formula_weight         150.13
_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_type_scat_source           IntTabIV
_cell_angle_alpha                90.00000
_cell_angle_beta                 92.46(3)
_cell_angle_gamma                90.00000
_cell_formula_units_Z            2
_cell_length_a                   3.733(3)
_cell_length_b                   8.009(2)
_cell_length_c                   11.508(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    298
_cell_measurement_theta_max      14.9
_cell_measurement_theta_min      14.1
_cell_volume                     343.7(3)
_computing_cell_refinement       'AFC/MSC Diffractometer Control System'
_computing_data_collection
'AFC/MSC Diffractometer Control System (Rigaku Corporation, 1993)'
_computing_data_reduction        'local programs'
_computing_molecular_graphics    CRYSTAN-GM
_computing_publication_material  CRYSTAN-GM
_computing_structure_refinement  CRYSTAN-GM
_computing_structure_solution    'CRYSTAN-GM (Edwards et al., 1996)'
_diffrn_measurement_device_type  'Rigaku AFC-5'
_diffrn_measurement_method       \q-2\q
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.009
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            1146
_diffrn_reflns_theta_max         30.0
_diffrn_standards_decay_%        6.1
_diffrn_standards_interval_count 100
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.129
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.451
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             160
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.5
_exptl_crystal_size_min          0.4
_refine_diff_density_max         0.26
_refine_diff_density_min         -0.31
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_obs   1.06
_refine_ls_hydrogen_treatment    refall
_refine_ls_number_parameters     66
_refine_ls_number_reflns         908
_refine_ls_R_factor_obs          .040
_refine_ls_shift/esd_max         0.02
_refine_ls_shift/esd_mean        0.0024
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details     'w = 1/[\s^2^(F) + 0.000225F^2^]'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_obs         .048
_reflns_number_observed          908
_reflns_number_total             1008
_reflns_threshold_expression     '|F~o~| > 3\s(|F~o~|)'
_cod_data_source_file            oa1034.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:

'_atom_site_thermal_displace_type' tag value 'Uij' was replaced with
'Uani' value 5 times.

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

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               2006947