3-Cyano-6-hydroxy-4-methyl-2-pyridone: two new pseudopolymorphs and two cocrystals with products of anin situnucleophilic aromatic substitution
Gerhardt, Valeska; Bolte, Michael; Acta Crystallographica Section C Structural Chemistry 71 (2015) –; doi:10.1107/S2053229614025819

data_2019748
_publ_section_title
;
 3-Cyano-6-hydroxy-4-methyl-2-pyridone: two new pseudopolymorphs and two
 cocrystals with products of anin situnucleophilic aromatic substitution
;
_journal_coeditor_code           UK3106
_journal_issue                   1
_journal_name_full
'Acta Crystallographica Section C Structural Chemistry'
_journal_paper_doi               10.1107/S2053229614025819
_journal_volume                  71
_journal_year                    2015
_chemical_formula_iupac          'C7 H13 N4 + , C7 H5 N2 O2 -'
_chemical_formula_moiety         'C7 H13 N4 +, C7 H5 N2 O2 -'
_chemical_formula_sum            'C14 H18 N6 O2'
_chemical_formula_weight         302.34
_chemical_name_systematic
;
2-Amino-4-dimethylamino-6-methylpyrimidin-1-ium
5-cyano-4-methyl-6-oxo-1,6-dihydropyridin-2-olate
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_cell_angle_alpha                93.219(7)
_cell_angle_beta                 99.114(7)
_cell_angle_gamma                108.395(6)
_cell_formula_units_Z            2
_cell_length_a                   7.1928(6)
_cell_length_b                   8.1316(7)
_cell_length_c                   13.6009(11)
_cell_measurement_reflns_used    16835
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      26.44
_cell_measurement_theta_min      3.21
_cell_volume                     740.53(11)
_computing_cell_refinement
;
X-AREA (Stoe & Cie, 2001)
;
_computing_data_collection
;
X-AREA (Stoe & Cie, 2001)
;
_computing_data_reduction
;
X-AREA (Stoe & Cie, 2001)
;
_computing_molecular_graphics
;
Mercury (Macrae <i>et al.</i>,  2008) and XP in SHELXTL-Plus (Sheldrick,
2008)
;
_computing_publication_material
;
publCIF (Westrip, 2010)
;
_computing_structure_refinement
;
SHELXL97 (Sheldrick, 2008)
;
_computing_structure_solution
;
SHELXS97 (Sheldrick, 2008)
;
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Stoe IPDS II two-circle'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  'Genix 3D multilayer optics'
_diffrn_radiation_source         'Genix 3D I\mS microfocus X-ray source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0464
_diffrn_reflns_av_sigmaI/netI    0.0252
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            18362
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         26.09
_diffrn_reflns_theta_min         3.21
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.096
_exptl_absorpt_correction_T_max  0.9861
_exptl_absorpt_correction_T_min  0.9803
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
(X-AREA; Stoe & Cie, 2001)
;
_exptl_crystal_colour            'light brown'
_exptl_crystal_density_diffrn    1.356
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             320
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.176
_refine_diff_density_min         -0.169
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.049
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     219
_refine_ls_number_reflns         2922
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.049
_refine_ls_R_factor_all          0.0460
_refine_ls_R_factor_gt           0.0361
_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^)+(0.0482P)^2^+0.2111P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0961
_refine_ls_wR_factor_ref         0.1004
_reflns_number_gt                2450
_reflns_number_total             2922
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            uk3106sup1.cif
_cod_data_source_block           3
_cod_database_code               2019748
_cod_database_fobs_code          2019748