3-[4-(4-Fluorophenyl)piperazin-1-ylmethyl]-5-methyl-1,3-benzoxazol-2(3<i>H</i>)-one and 3-[4-(2-fluorophenyl)piperazin-1-ylmethyl]-5-methyl-1,3-benzoxazol-2(3<i>H</i>)-one
Yavuz Köysal; Şamil Işık; Meriç Köksal; Hakkı Erdog̃an; Nesrin Gokhan; Acta Crystallographica Section C 60 (2004) o232–o234; doi:10.1107/S0108270104003269

data_2013902
_publ_section_title
;3-[4-(4-Fluorophenyl)piperazin-1-ylmethyl]-5-methyl-1,3-benzoxazol-2(3<i>H</i>)-one
 and
 3-[4-(2-fluorophenyl)piperazin-1-ylmethyl]-5-methyl-1,3-benzoxazol-2(3<i>H</i>)-one
;
_journal_issue                   4
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o232
_journal_page_last               o234
_journal_paper_doi               10.1107/S0108270104003269
_journal_volume                  60
_journal_year                    2004
_chemical_formula_iupac          'C19 H20 F N3 O2'
_chemical_formula_moiety         'C19 H20 F N3 O2'
_chemical_formula_sum            'C19 H20 F N3 O2'
_chemical_formula_weight         341.22
_chemical_name_systematic
;
3-[4-(2-Fluorophenyl)piperazin-1-ylmethyl]-5-methyl-1,3-benzoxazol-2(3H)-one
;
_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   constr
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 91.422(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.7467(10)
_cell_length_b                   9.5470(4)
_cell_length_c                   11.4779(6)
_cell_measurement_reflns_used    19436
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      29.45
_cell_measurement_theta_min      0.00
_cell_volume                     1724.98(16)
_computing_cell_refinement       'STOE X-AREA'
_computing_data_collection       'STOE X-AREA (Stoe & Cie, 2002)'
_computing_data_reduction        'STOE X-RED (Stoe & Cie, 2002)'
_computing_molecular_graphics    'ORTEPIII (Burnett & Johnson, 1996)'
_computing_publication_material
'WinGX (Farrugia, 1997) and PARST (Nardelli, 1995)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 6.67
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'STOE IPDS 2'
_diffrn_measurement_method       '\w 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  0.0927
_diffrn_reflns_av_sigmaI/netI    0.0399
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            24265
_diffrn_reflns_theta_full        25.99
_diffrn_reflns_theta_max         25.99
_diffrn_reflns_theta_min         2.50
_exptl_absorpt_coefficient_mu    0.094
_exptl_absorpt_correction_T_max  0.9802
_exptl_absorpt_correction_T_min  0.8784
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details   '(STOE X-RED; Stoe & Cie, 2002)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.314
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             720
_exptl_crystal_size_max          0.600
_exptl_crystal_size_mid          0.417
_exptl_crystal_size_min          0.310
_refine_diff_density_max         0.209
_refine_diff_density_min         -0.151
_refine_ls_extinction_coef       0.015(2)
_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   1.070
_refine_ls_hydrogen_treatment    'see text'
_refine_ls_matrix_type           full
_refine_ls_number_parameters     246
_refine_ls_number_reflns         3392
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.070
_refine_ls_R_factor_all          0.0488
_refine_ls_R_factor_gt           0.0410
_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^)+(0.0658P)^2^+0.1274P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1179
_refine_ls_wR_factor_ref         0.1235
_reflns_number_gt                2779
_reflns_number_total             3392
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            av1163.cif
_cod_data_source_block           II
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2013902