2-[4-Phenyl-5-(2-pyridyl)-4<i>H</i>-1,2,4-triazol-3-yl]nicotinic acid: a case of solvent-dependent polymorphism
Mazur, Liliana; Koziol, Anna E.; Modzelewska-Banachiewicz, Bozena; Acta Crystallographica Section C 64 (2008) o574–o577; doi:10.1107/S0108270108029806

data_2016817
_publ_section_title
;
 2-[4-Phenyl-5-(2-pyridyl)-4<i>H</i>-1,2,4-triazol-3-yl]nicotinic acid:
 a case of solvent-dependent polymorphism
;
_journal_coeditor_code           SQ3157
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o574
_journal_page_last               o577
_journal_paper_doi               10.1107/S0108270108029806
_journal_volume                  64
_journal_year                    2008
_chemical_formula_iupac          'C19 H13 N5 O2'
_chemical_formula_moiety         'C19 H13 N5 O2'
_chemical_formula_sum            'C19 H13 N5 O2'
_chemical_formula_weight         343.34
_chemical_name_systematic
;
2-[4-Phenyl-5-(2-pyridyl)-4<i>H</i>-1,2,4-triazol-3-yl]nicotinic acid
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 117.11(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.032(3)
_cell_length_b                   11.758(2)
_cell_length_c                   9.208(2)
_cell_measurement_reflns_used    48
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      18
_cell_measurement_theta_min      6
_cell_volume                     870.4(4)
_computing_cell_refinement       'KM-4 Software (Kuma, 1998)'
_computing_data_collection       'KM-4 Software (Kuma, 1998)'
_computing_data_reduction        'KM-4 Software (Kuma, 1998)'
_computing_molecular_graphics    'SHELXTL/PC (Sheldrick, 2008)'
_computing_publication_material
'SHELXL97 (Sheldrick, 2008) and enCIFer (Allen <i>et al.</i>,  2004)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      295(2)
_diffrn_measured_fraction_theta_full 0.957
_diffrn_measured_fraction_theta_max 0.957
_diffrn_measurement_device_type  'Kuma KM-4 four-circle'
_diffrn_measurement_method       \w-2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0257
_diffrn_reflns_av_sigmaI/netI    0.0339
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            3798
_diffrn_reflns_theta_full        80.50
_diffrn_reflns_theta_max         80.50
_diffrn_reflns_theta_min         5.40
_diffrn_standards_decay_%        0.8
_diffrn_standards_interval_count 100
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.733
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.310
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             356
_exptl_crystal_size_max          0.58
_exptl_crystal_size_mid          0.42
_exptl_crystal_size_min          0.36
_refine_diff_density_max         0.165
_refine_diff_density_min         -0.148
_refine_ls_abs_structure_details 'Flack (1983)'
_refine_ls_abs_structure_Flack   0.3(2)
_refine_ls_extinction_coef       0.017(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 2008)'
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     239
_refine_ls_number_reflns         3577
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0633
_refine_ls_R_factor_gt           0.0373
_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^)+(0.0677P)^2^+0.0089P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0925
_refine_ls_wR_factor_ref         0.1036
_reflns_number_gt                2628
_reflns_number_total             3577
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            sq3157.cif
_cod_data_source_block           Ia
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               2016817
_cod_database_fobs_code          2016817