(2,7-Dimethoxynaphthalen-1-yl)(4-methoxyphenyl)methanone
Sasagawa, Kosuke; Sakamoto, Rei; Hijikata, Daichi; Okamoto, Akiko; Yonezawa, Noriyuki; Acta Crystallographica Section E 69 (2013) o363–; doi:10.1107/S1600536813003218

data_2237541
_publ_section_title
;
 (2,7-Dimethoxynaphthalen-1-yl)(4-methoxyphenyl)methanone
;
_journal_coeditor_code           PK2464
_journal_issue                   3
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o363
_journal_paper_doi               10.1107/S1600536813003218
_journal_volume                  69
_journal_year                    2013
_chemical_formula_iupac          'C20 H18 O4'
_chemical_formula_moiety         'C20 H18 O4'
_chemical_formula_sum            'C20 H18 O4'
_chemical_formula_weight         322.34
_chemical_name_systematic
;
(2,7-Dimethoxynaphthalen-1-yl)(4-methoxyphenyl)methanone
;
_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                 92.56
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.9638(2)
_cell_length_b                   7.91910(10)
_cell_length_c                   13.6394(2)
_cell_measurement_reflns_used    25377
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      68.23
_cell_measurement_theta_min      2.96
_cell_volume                     1614.65(4)
_computing_cell_refinement       'PROCESS-AUTO (Rigaku, 1998)'
_computing_data_collection       'PROCESS-AUTO (Rigaku, 1998)'
_computing_data_reduction        'CrystalStructure (Rigaku, 2010)'
_computing_molecular_graphics    'ORTEPIII (Burnett & Johnson, 1996)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    '<i>Il Milione</i> (Burla <i>et al.</i>, 2007)'
_diffrn_ambient_temperature      193(2)
_diffrn_detector_area_resol_mean 10.000
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Rigaku R-AXIS RAPID'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.5418
_diffrn_reflns_av_R_equivalents  0.0511
_diffrn_reflns_av_sigmaI/netI    0.0194
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            27665
_diffrn_reflns_theta_full        68.23
_diffrn_reflns_theta_max         68.23
_diffrn_reflns_theta_min         2.96
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.750
_exptl_absorpt_correction_T_max  0.806
_exptl_absorpt_correction_T_min  0.662
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   '(NUMABS; Higashi, 1999)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.326
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             680
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.240
_refine_diff_density_min         -0.178
_refine_ls_extinction_coef       0.0093(6)
_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   1.047
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     221
_refine_ls_number_reflns         2957
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.047
_refine_ls_R_factor_all          0.0408
_refine_ls_R_factor_gt           0.0383
_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^)+(0.0622P)^2^+0.3230P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1020
_refine_ls_wR_factor_ref         0.1056
_reflns_number_gt                2701
_reflns_number_total             2957
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            pk2464.cif
_cod_data_source_block           I
_cod_original_cell_volume        1614.64(4)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2237541
_cod_database_fobs_code          2237541