6,6-Dimethyl-2-phenyl-4,5,6,7-tetrahydrobenzofuran-4-one
Yun Li; Anwar Usman; Ibrahim Abdul Razak; Hoong-Kun Fun; Suchada Chantrapromma; Yan Zhang; Jian-Hua Xu; Acta Crystallographica Section E 58 (2002) o992–o993; doi:10.1107/S1600536802014058

data_2201570
_publ_section_title
;
 6,6-Dimethyl-2-phenyl-4,5,6,7-tetrahydrobenzofuran-4-one
;
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o992
_journal_page_last               o993
_journal_paper_doi               10.1107/S1600536802014058
_journal_volume                  58
_journal_year                    2002
_chemical_formula_iupac          'C16 H16 O2'
_chemical_formula_moiety         'C16 H16 O2'
_chemical_formula_sum            'C16 H16 O2'
_chemical_formula_weight         240.29
_chemical_name_systematic
;
6,6-Dimethyl-2-phenyl-4,5,6,7-tetrahydrobenzofuran-4-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   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 95.5210(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   5.9261(3)
_cell_length_b                   11.1029(6)
_cell_length_c                   19.6978(11)
_cell_measurement_reflns_used    5717
_cell_measurement_temperature    213(2)
_cell_measurement_theta_max      28.29
_cell_measurement_theta_min      2.77
_cell_volume                     1290.04(12)
_computing_cell_refinement       'SAINT (Siemens, 1996)'
_computing_data_collection       'SMART (Siemens, 1996)'
_computing_data_reduction        'SAINT and SADABS (Sheldrick, 1996)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material
'SHELXTL, PARST (Nardelli, 1995) and PLATON (Spek, 1990)'
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Sheldrick, 1997)'
_diffrn_ambient_temperature      213(2)
_diffrn_detector_area_resol_mean 8.33
_diffrn_measured_fraction_theta_full 0.975
_diffrn_measured_fraction_theta_max 0.975
_diffrn_measurement_device_type  'Siemens SMART 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  0.0932
_diffrn_reflns_av_sigmaI/netI    0.1093
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            7600
_diffrn_reflns_theta_full        28.30
_diffrn_reflns_theta_max         28.30
_diffrn_reflns_theta_min         2.77
_diffrn_standards_decay_%        negligible
_diffrn_standards_interval_count none
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.080
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.237
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             512
_exptl_crystal_size_max          0.44
_exptl_crystal_size_mid          0.38
_exptl_crystal_size_min          0.28
_refine_diff_density_max         0.476
_refine_diff_density_min         -0.426
_refine_ls_extinction_coef       0.073(8)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXTL
_refine_ls_goodness_of_fit_ref   0.944
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     166
_refine_ls_number_reflns         3123
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.944
_refine_ls_R_factor_all          0.0874
_refine_ls_R_factor_gt           0.0693
_refine_ls_shift/su_max          <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^)+(0.0884P)^2^] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1634
_refine_ls_wR_factor_ref         0.1722
_reflns_number_gt                2228
_reflns_number_total             3123
_reflns_threshold_expression     I>2\s(I)'
_cod_data_source_file            ob6165.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        1290.00(10)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2201570
_cod_database_fobs_code          2201570