Derivatives of 2,4-dimethoxy-1,3,5-triazine
Natalya Fridman; Moshe Kapon; Menahem Kaftory; Acta Crystallographica Section C 59 (2003) o687–o689; doi:10.1107/S0108270103024570

data_2013546
_publ_section_title
;
 Derivatives of 2,4-dimethoxy-1,3,5-triazine
;
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o687
_journal_page_last               o689
_journal_paper_doi               10.1107/S0108270103024570
_journal_volume                  59
_journal_year                    2003
_chemical_formula_iupac          'C18 H15 N3 O4'
_chemical_formula_moiety         'C18 H15 N3 O4'
_chemical_formula_sum            'C18 H15 N3 O4'
_chemical_formula_weight         337.33
_chemical_name_systematic
;
4-(4,6-Dimethoxy-1,3,5-triazin-2-yloxy)phenyl phenyl ketone
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 111.56(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            16
_cell_length_a                   32.610(6)
_cell_length_b                   13.757(3)
_cell_length_c                   15.904(3)
_cell_measurement_reflns_used    11206
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.05
_cell_measurement_theta_min      1.34
_cell_volume                     6636(2)
_computing_cell_refinement       'Denzo--SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'Collect (Nonius, 2000)'
_computing_data_reduction        Denzo--SMN
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 95
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Nnius KappaCCD'
_diffrn_measurement_method       '\f scan'
_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  0.0282
_diffrn_reflns_av_sigmaI/netI    0.0637
_diffrn_reflns_limit_h_max       38
_diffrn_reflns_limit_h_min       -38
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            11206
_diffrn_reflns_theta_full        25.05
_diffrn_reflns_theta_max         25.05
_diffrn_reflns_theta_min         1.34
_diffrn_standards_number         none
_exptl_absorpt_coefficient_mu    0.098
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.351
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             2816
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.27
_refine_diff_density_max         0.173
_refine_diff_density_min         -0.140
_refine_ls_extinction_coef       0.0043(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL97
_refine_ls_goodness_of_fit_ref   0.854
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     456
_refine_ls_number_reflns         5860
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.854
_refine_ls_R_factor_all          0.0810
_refine_ls_R_factor_gt           0.0385
_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^)+(0.0566P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0928
_refine_ls_wR_factor_ref         0.1000
_reflns_number_gt                3022
_reflns_number_total             5860
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            av1155.cif
_cod_data_source_block           III
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               2013546
_cod_database_fobs_code          2013546