12-(2-Methoxyphenyl)-9,9-dimethyl-8,9-dihydro-12<i>H</i>-benzo[<i>a</i>]xanthen-11(10<i>H</i>)-one
Li, De-Ling; Wang, Li-Hong; Acta Crystallographica Section E 66 (2010) o119–; doi:10.1107/S1600536809052210

data_2224708
_publ_section_title
12-(2-Methoxyphenyl)-9,9-dimethyl-8,9-dihydro-12<i>H</i>-benzo[<i>a</i>]xanthen-11(10<i>H</i>)-one
_journal_coeditor_code           NC2168
_journal_issue                   1
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o119
_journal_paper_doi               10.1107/S1600536809052210
_journal_volume                  66
_journal_year                    2010
_chemical_formula_iupac          'C26 H24 O3'
_chemical_formula_moiety         'C26 H24 O3'
_chemical_formula_sum            'C26 H24 O3'
_chemical_formula_weight         384.45
_chemical_name_systematic
;
12-(2-Methoxyphenyl)-9,9-dimethyl-9,10-dihydro-8<i>H</i>-
benzo[<i>a</i>]xanthen-11(12<i>H</i>)-one
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 98.893(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.8454(11)
_cell_length_b                   22.670(3)
_cell_length_c                   11.3100(13)
_cell_measurement_reflns_used    3867
_cell_measurement_temperature    113(2)
_cell_measurement_theta_max      27.2
_cell_measurement_theta_min      1.8
_cell_volume                     1987.4(4)
_computing_cell_refinement       'CrystalClear (Rigaku/MSC, 2005)'
_computing_data_collection       'CrystalClear (Rigaku/MSC, 2005)'
_computing_data_reduction        'CrystalClear (Rigaku/MSC, 2005)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      113(2)
_diffrn_detector_area_resol_mean 7.31
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'Rigaku Saturn CCD area-detector'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  confocal
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.0345
_diffrn_reflns_av_sigmaI/netI    0.0354
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            12038
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.03
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  0.985
_exptl_absorpt_correction_T_min  0.970
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(CrystalClear; Rigaku/MSC, 2005)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.285
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             816
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.289
_refine_diff_density_min         -0.210
_refine_ls_extinction_coef       0.024(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.088
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     266
_refine_ls_number_reflns         3860
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.088
_refine_ls_R_factor_all          0.0595
_refine_ls_R_factor_gt           0.0489
_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^)+(0.0629P)^2^+0.2114P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1130
_refine_ls_wR_factor_ref         0.1215
_reflns_number_gt                3274
_reflns_number_total             3860
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            nc2168.cif
_cod_data_source_block           I
_cod_original_cell_volume        1987.4(5)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2224708
_cod_database_fobs_code          2224708