5-Methyl-2-[(<i>E</i>)-2-(5-methylbenz[<i>d</i>]oxazol-2-yl)vinyl]benz[<i>d</i>]oxazole
Fang-Fang Jian; Wei Yi; Li-Ming Wang; Jing Wang; Acta Crystallographica Section E 63 (2007) o3887–o3887; doi:10.1107/S1600536807035362

data_2214992
_publ_section_title
5-Methyl-2-[(<i>E</i>)-2-(5-methylbenz[<i>d</i>]oxazol-2-yl)vinyl]benz[<i>d</i>]oxazole
_journal_coeditor_code           BT2434
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o3887
_journal_page_last               o3887
_journal_paper_doi               10.1107/S1600536807035362
_journal_volume                  63
_journal_year                    2007
_chemical_formula_iupac          'C18 H14 N2 O2'
_chemical_formula_moiety         'C18 H14 N2 O2'
_chemical_formula_sum            'C18 H14 N2 O2'
_chemical_formula_weight         290.31
_chemical_melting_point          182
_chemical_name_systematic
;
5-Methyl-2-[(E)-2-(5-methylbenz[d]oxazol-2-yl)vinyl]benz[d]oxazole
;
_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                 100.94(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   22.153(4)
_cell_length_b                   4.7700(10)
_cell_length_c                   14.053(3)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26.96
_cell_measurement_theta_min      1.87
_cell_volume                     1458.0(5)
_computing_cell_refinement       'CAD-4 Software'
_computing_data_collection       'CAD-4 Software (Enraf--Nonius, 1989)'
_computing_data_reduction        'CAD-4 Software'
_computing_molecular_graphics    'SHELXTL/PC (Sheldrick, 1990)'
_computing_publication_material  SHELXTL/PC
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'Bruker P4'
_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  0.0372
_diffrn_reflns_av_sigmaI/netI    0.0522
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       0
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            3101
_diffrn_reflns_theta_full        26.97
_diffrn_reflns_theta_max         26.97
_diffrn_reflns_theta_min         1.87
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 200
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.088
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.323
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             608
_exptl_crystal_size_max          0.41
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.240
_refine_diff_density_min         -0.268
_refine_ls_extinction_coef       0.0060(17)
_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   1.037
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     102
_refine_ls_number_reflns         1560
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.1040
_refine_ls_R_factor_gt           0.0549
_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^)+(0.0866P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1329
_refine_ls_wR_factor_ref         0.1549
_reflns_number_gt                939
_reflns_number_total             1560
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            bt2434.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               2214992
_cod_database_fobs_code          2214992