Methylamine and Dimethylamine Salts of the Hydrogen Maleate Ion
Madsen, Dennis; Larsen, Sine; Acta Crystallographica Section C 54 (1998) 1507–1511; doi:10.1107/S0108270198003606

data_2007678
_publ_section_title
;
 Methylamine and Dimethylamine Salts of the Hydrogen Maleate Ion
;
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              1507
_journal_page_last               1511
_journal_paper_doi               10.1107/S0108270198003606
_journal_volume                  54
_journal_year                    1998
_chemical_formula_moiety         'C2 H8 N 1+ , C4 H3 O4 1-'
_chemical_formula_sum            'C6 H11 N O4'
_chemical_formula_weight         161.16
_chemical_name_common            'dimethylammonium hydrogen maleate'
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_cell_angle_alpha                90.00
_cell_angle_beta                 98.729(8)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.4738(8)
_cell_length_b                   8.3444(13)
_cell_length_c                   11.5727(10)
_cell_measurement_reflns_used    23
_cell_measurement_temperature    122.4(5)
_cell_measurement_theta_max      22.34
_cell_measurement_theta_min      21.27
_cell_volume                     808.81(16)
_computing_cell_refinement       'CAD-4 EXPRESS'
_computing_data_collection       'CAD-4 EXPRESS (Enraf-Nonius, 1992)'
_computing_data_reduction        'DREADD (Blessing, 1987)'
_computing_molecular_graphics    'ORTEPII (Johnson, 1976)'
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_computing_structure_solution    'SHELXS86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      122.4(5)
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_diffrn_measurement_method       \w-2\q
_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  0.010
_diffrn_reflns_av_sigmaI/netI    0.0314
_diffrn_reflns_limit_h_max       15
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_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
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_diffrn_reflns_theta_max         41.92
_diffrn_reflns_theta_min         2.79
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  167
_diffrn_standards_number         5
_exptl_absorpt_coefficient_mu    0.112
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.323
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rectangular
_exptl_crystal_F_000             344
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.553
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_refine_ls_extinction_coef       0.0256(18)
_refine_ls_extinction_method     SHELXL93
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_refine_ls_hydrogen_treatment    refall
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_refine_ls_R_factor_all          0.082
_refine_ls_R_factor_obs          0.054
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_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details     'w = 1/[\s^2^(Fo^2^)]'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.076
_refine_ls_wR_factor_obs         0.072
_reflns_number_observed          4080
_reflns_number_total             5630
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            ab1534.cif
_cod_data_source_block           2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc w = 1/[\s^2^(Fo^2^)]' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to 'w = 1/[\s^2^(Fo^2^)]'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_cell_volume        808.8(2)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2007678