C—H···O, C—H···π and π–π interactions in three benzofuran-2-yl ketone derivatives
Yilmaz, Veysel T.; Kazak, Canan; Kirilmis, Cumhur; Koca, Murat; Heinemann, Frank W.; Acta Crystallographica Section C 61 (2005) o438–o441; doi:10.1107/S0108270105016185

data_2015080
_publ_section_title
;
 C---H&#x00B7;&#x00B7;&#x00B7;O, C---H&#x00B7;&#x00B7;&#x00B7;\p and
 \p--\p interactions in three benzofuran-2-yl ketone derivatives
;
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o438
_journal_page_last               o441
_journal_paper_doi               10.1107/S0108270105016185
_journal_volume                  61
_journal_year                    2005
_chemical_formula_iupac          'C28 H28 O2'
_chemical_formula_moiety         'C28 H28 O2'
_chemical_formula_sum            'C28 H28 O2'
_chemical_formula_weight         396.50
_chemical_name_systematic
;
3-mesityl-3-methylcyclobutyl
3-methylnaphtho[1,2-b]furan-2-yl ketone
;
_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                 95.487(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.3816(3)
_cell_length_b                   8.2874(6)
_cell_length_c                   34.591(2)
_cell_measurement_reflns_used    134
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      20.00
_cell_measurement_theta_min      6.00
_cell_volume                     2106.4(2)
_computing_cell_refinement       'EVALCCD (Duisenberg <i>et al.</i>, 2003)'
_computing_data_collection       'COLLECT (Bruker, 2002)'
_computing_data_reduction        EVALCCD
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Bruker, 2002)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.971
_diffrn_measured_fraction_theta_max 0.971
_diffrn_measurement_device_type  'Bruker--Nonius KappaCCD'
_diffrn_measurement_method
;
  \f and \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  0.0319
_diffrn_reflns_av_sigmaI/netI    0.0298
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       43
_diffrn_reflns_limit_l_min       -43
_diffrn_reflns_number            20365
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         3.47
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.077
_exptl_absorpt_correction_T_max  0.988
_exptl_absorpt_correction_T_min  0.970
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2002)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.250
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             848
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.261
_refine_diff_density_min         -0.252
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     276
_refine_ls_number_reflns         4182
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.0600
_refine_ls_R_factor_gt           0.0441
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0429P)^2^+1.2434P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0993
_refine_ls_wR_factor_ref         0.1057
_reflns_number_gt                3360
_reflns_number_total             4182
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            sq1211.cif
_cod_data_source_block           III
_cod_original_sg_symbol_Hall     -P2ybc
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2015080
_cod_database_fobs_code          2015080