5,6-Diphenyl-3-(3-pyridyl)-1,2,4-triazine
Jian, Fang-Fang; Ren, Ping; Acta Crystallographica Section E 66 (2010) o427–; doi:10.1107/S1600536810002187

data_2224995
_publ_section_title
;
 5,6-Diphenyl-3-(3-pyridyl)-1,2,4-triazine
;
_journal_coeditor_code           HG2609
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o427
_journal_paper_doi               10.1107/S1600536810002187
_journal_volume                  66
_journal_year                    2010
_chemical_formula_iupac          'C20 H14 N4'
_chemical_formula_moiety         'C20 H14 N4'
_chemical_formula_sum            'C20 H14 N4'
_chemical_formula_weight         310.35
_chemical_melting_point          444
_chemical_name_common            5,6-Diphenyl-3-(3-pyridyl)-1,2,4-triazine
_chemical_name_systematic
;
5,6-Diphenyl-3-(3-pyridyl)-1,2,4-triazine
;
_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_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                 125.587(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.4775(16)
_cell_length_b                   7.0923(8)
_cell_length_c                   18.5786(15)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.29
_cell_measurement_theta_min      1.73
_cell_volume                     1551.3(3)
_computing_cell_refinement       'CAD-4 Software (Enraf--Nonius, 1989)'
_computing_data_collection       'CAD-4 Software (Enraf--Nonius, 1989)'
_computing_data_reduction        'NRCVAX (Gabe <i>et al.</i>,  1989)'
_computing_molecular_graphics    'SHELXTL/PC (Sheldrick, 2008)'
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.976
_diffrn_measured_fraction_theta_max 0.976
_diffrn_measurement_device_type  'Enraf--Nonius CAD-4 diffractometer'
_diffrn_measurement_method       \w
_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  0.0330
_diffrn_reflns_av_sigmaI/netI    0.0435
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            9802
_diffrn_reflns_theta_full        28.29
_diffrn_reflns_theta_max         28.29
_diffrn_reflns_theta_min         1.73
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 200
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.082
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.329
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             648
_exptl_crystal_size_max          0.31
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.26
_refine_diff_density_max         0.160
_refine_diff_density_min         -0.153
_refine_ls_extinction_coef       0.0105(17)
_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   1.035
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     218
_refine_ls_number_reflns         3770
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.0927
_refine_ls_R_factor_gt           0.0476
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0536P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1057
_refine_ls_wR_factor_ref         0.1251
_reflns_number_gt                2184
_reflns_number_total             3770
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            hg2609.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:

'_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               2224995
_cod_database_fobs_code          2224995