2-Aminopyrimidine–fumaric acid cocrystal
Shyamaprosad Goswami; Ajit Kumar Mahapatra; Gur Dayal Nigam; Kandasamy Chinnakali; Hoong-Kun Fun; Ibrahim Abdul Razak; Acta Crystallographica Section C 55 (1999) 583–585; doi:10.1107/S0108270198014127

data_2008366
_publ_section_title
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 2-Aminopyrimidine--fumaric acid cocrystal
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_journal_issue                   4
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              583
_journal_page_last               585
_journal_paper_doi               10.1107/S0108270198014127
_journal_volume                  55
_journal_year                    1999
_chemical_formula_iupac          'C4 H6 N3 + , 0.5C4 H2 O4 2- , 0.5C4 H4 O4'
_chemical_formula_sum            'C8 H9 N3 O4'
_chemical_formula_weight         211.18
_chemical_name_systematic
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2-Aminopyrimidine-Fumaric Acid (1:2) co-crystal
;
_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'
_audit_creation_method           SHELXL97
_cell_angle_alpha                90.00
_cell_angle_beta                 96.8930(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   3.7946(2)
_cell_length_b                   19.1766(7)
_cell_length_c                   13.0641(6)
_cell_measurement_reflns_used    3463
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      33.12
_cell_measurement_theta_min      3.14
_cell_volume                     943.77(7)
_computing_cell_refinement       'SAINT (Siemens, 1996)'
_computing_data_collection       'SMART (Siemens, 1996)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    SHELXTL
_computing_publication_material  'SHELXTL and PARST (Nardelli, 1995)'
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 8.33
_diffrn_measurement_device       'Siemens SMART CCD area-detector'
_diffrn_measurement_method       \w-scans
_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  0.042
_diffrn_reflns_av_sigmaI/netI    0.055
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            7257
_diffrn_reflns_theta_max         30.00
_diffrn_reflns_theta_min         3.14
_exptl_absorpt_coefficient_mu    0.121
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.486
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       slab
_exptl_crystal_F_000             440
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.387
_refine_diff_density_min         -0.227
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     172
_refine_ls_number_reflns         2752
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.103
_refine_ls_R_factor_gt           0.067
_refine_ls_shift/su_max          <0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0917P)^2^+0.1819P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.184
_reflns_number_gt                1830
_reflns_number_total             2752
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ha1239.cif
_cod_data_source_block           I
_cod_depositor_comments
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The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc w =
1/[\s^2^(Fo^2^)+(0.0917P)^2^+0.1819P] where P=(Fo^2^+2Fc^2^)/3' 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^)+(0.0917P)^2^+0.1819P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
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_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2008366