3,15-Dimethoxy-10-methyltricyclo[9.4.0.0^2,7^]pentadeca-1(11),2(7),3,5,9,12,14-heptaen-8-one
Zhu, Yaomin; Yang, Jianfei; Li, Xianfei; Zhou, Le; Acta Crystallographica Section E 67 (2011) o2282–; doi:10.1107/S160053681103100X

data_2231766
_publ_section_title
;
 3,15-Dimethoxy-10-methyltricyclo[9.4.0.0^2,7^]pentadeca-1(11),2(7),3,5,9,12,14-heptaen-8-one
;
_journal_coeditor_code           ZJ2016
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2282
_journal_paper_doi               10.1107/S160053681103100X
_journal_volume                  67
_journal_year                    2011
_chemical_formula_iupac          'C18 H16 O3'
_chemical_formula_moiety         'C18 H16 O3'
_chemical_formula_sum            'C18 H16 O3'
_chemical_formula_weight         280.31
_chemical_name_systematic
;
3,15-Dimethoxy-10-methyltricyclo[9.4.0.0^2,7^]pentadeca-
1(11),2(7),3,5,9,12,14-heptaen-8-one
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.6615(10)
_cell_length_b                   12.2005(16)
_cell_length_c                   15.545(2)
_cell_measurement_reflns_used    2351
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      22.59
_cell_measurement_theta_min      2.62
_cell_volume                     1453.1(3)
_computing_cell_refinement       'SAINT (Bruker, 2004)'
_computing_data_collection       'SMART (Bruker, 2004)'
_computing_data_reduction        'SAINT (Bruker, 2004)'
_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      295(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART CCD area detector'
_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  0.0342
_diffrn_reflns_av_sigmaI/netI    0.0289
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            11119
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         2.62
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.087
_exptl_absorpt_correction_T_max  0.9856
_exptl_absorpt_correction_T_min  0.9636
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.281
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             592
_exptl_crystal_size_max          0.43
_exptl_crystal_size_mid          0.31
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.101
_refine_diff_density_min         -0.133
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.088
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     193
_refine_ls_number_reflns         2708
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.088
_refine_ls_R_factor_all          0.0544
_refine_ls_R_factor_gt           0.0369
_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^)+(0.0385P)^2^+0.0759P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0798
_refine_ls_wR_factor_ref         0.0898
_reflns_number_gt                2083
_reflns_number_total             2708
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            zj2016.cif
_cod_data_source_block           I
_cod_database_code               2231766
_cod_database_fobs_code          2231766