Photoinduced Reactions of para-Quinones with Bicyclopropylidene Leading to Diverse Polycyclic Compounds with Spirocyclopropanes
Wei Wang; Wen-Jie Zhang; Lei Wang; Ching Kheng Quah; Hoong-Kun Fun; Jian-Hua Xu; Yan Zhang; Journal of Organic Chemistry 78 (2013) 6211–6222; doi:10.1021/jo4008767

data_4028374
_publ_section_title
;
 Photoinduced Reactions of para-Quinones with Bicyclopropylidene Leading
 to Diverse Polycyclic Compounds with Spirocyclopropanes
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              6211
_journal_page_last               6222
_journal_paper_doi               10.1021/jo4008767
_journal_volume                  78
_journal_year                    2013
_chemical_formula_moiety         'C20 H16 O2'
_chemical_formula_sum            'C20 H16 O2'
_chemical_formula_weight         288.33
_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                 90.020(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            12
_cell_length_a                   8.7207(16)
_cell_length_b                   11.945(2)
_cell_length_c                   41.474(7)
_cell_measurement_reflns_used    3755
_cell_measurement_temperature    100(1)
_cell_measurement_theta_max      29.73
_cell_measurement_theta_min      2.93
_cell_volume                     4320.3(13)
_computing_cell_refinement       'SAINT (Bruker, 2009)'
_computing_data_collection       'APEX2 (Bruker, 2009)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    SHELXTL
_computing_publication_material  'SHELXTL and PLATON (Spek, 2009)'
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Sheldrick, 2008)'
_diffrn_ambient_temperature      100
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type
;
Bruker SMART APEX II CCD area-detector diffractometer 
;
_diffrn_measurement_method       '\f and \w scans'
_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  0.1132
_diffrn_reflns_av_sigmaI/netI    0.1084
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       58
_diffrn_reflns_limit_l_min       -57
_diffrn_reflns_number            42788
_diffrn_reflns_theta_full        30.05
_diffrn_reflns_theta_max         30.05
_diffrn_reflns_theta_min         1.47
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.085
_exptl_absorpt_correction_T_max  0.9928
_exptl_absorpt_correction_T_min  0.9823
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(<i>SADABS</i>; Bruker, 2009)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.330
_exptl_crystal_description       block
_exptl_crystal_F_000             1824
_exptl_crystal_size_max          0.211
_exptl_crystal_size_mid          0.149
_exptl_crystal_size_min          0.086
_refine_diff_density_max         0.457
_refine_diff_density_min         -0.548
_refine_diff_density_rms         0.115
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.962
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     584
_refine_ls_number_reflns         12564
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.962
_refine_ls_R_factor_all          0.1590
_refine_ls_R_factor_gt           0.0587
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0775P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1413
_refine_ls_wR_factor_ref         0.1910
_reflns_number_gt                5016
_reflns_number_total             12564
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            jo4008767_si_002_5.cif
_cod_data_source_block           Compound_15b
_cod_original_cell_volume        4320.2(14)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4028374