Ethyl 3-(2,4-difluorophenoxy)-2-(4-methoxyphenyl)acrylate
Chen, Wu; Cui, Yong-Ming; Pan, Fei; Xia, Dong-Sheng; Zeng, Qing-Fu; Acta Crystallographica Section E 64 (2008) o2374–; doi:10.1107/S1600536808036945

data_2220131
_publ_section_title
;
 Ethyl 3-(2,4-difluorophenoxy)-2-(4-methoxyphenyl)acrylate
;
_journal_coeditor_code           CV2469
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2374
_journal_paper_doi               10.1107/S1600536808036945
_journal_volume                  64
_journal_year                    2008
_chemical_formula_iupac          'C18 H16 F2 O4'
_chemical_formula_moiety         'C18 H16 F2 O4'
_chemical_formula_sum            'C18 H16 F2 O4'
_chemical_formula_weight         334.31
_chemical_name_systematic
;
Ethyl 3-(2,4-difluorophenoxy)-2-(4-methoxyphenyl)acrylate
;
_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                 113.73(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   17.295(3)
_cell_length_b                   7.294(2)
_cell_length_c                   14.233(2)
_cell_measurement_reflns_used    1232
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      24.5
_cell_measurement_theta_min      2.3
_cell_volume                     1643.7(7)
_computing_cell_refinement       'SAINT (Bruker, 2007)'
_computing_data_collection       'SMART (Bruker, 2007)'
_computing_data_reduction        'SAINT (Bruker, 2007)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXTL (Sheldrick, 2008)'
_computing_structure_solution    'SHELXTL (Sheldrick, 2008)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker SMART 1000 CCD area-detector'
_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  0.0169
_diffrn_reflns_av_sigmaI/netI    0.0424
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       0
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            3340
_diffrn_reflns_theta_full        25.97
_diffrn_reflns_theta_max         25.97
_diffrn_reflns_theta_min         1.29
_exptl_absorpt_coefficient_mu    0.110
_exptl_absorpt_correction_T_max  0.9700
_exptl_absorpt_correction_T_min  0.9668
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2001)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.351
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             696
_exptl_crystal_size_max          0.31
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.28
_refine_diff_density_max         0.428
_refine_diff_density_min         -0.309
_refine_ls_extinction_coef       0.021(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXTL (Sheldrick, 2008)'
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     220
_refine_ls_number_reflns         3198
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.1052
_refine_ls_R_factor_gt           0.0616
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_max_lt       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^)+(0.0671P)^2^+1.0598P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1425
_refine_ls_wR_factor_ref         0.1734
_reflns_number_gt                1959
_reflns_number_total             3198
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            cv2469.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2220131
_cod_database_fobs_code          2220131