Palladium-catalyzed highly regioselective [3 + 2] cycloaddition reactions of alkylidenecyclopropa[b]naphthalenes with alkenes or alkynes: an efficient synthesis of 1(3)-alkylidene-2,3-dihydro-1H-benzo[f]indenes and 1-alkylidene-1H-benzo[f]indenes.
Chen, Wanli; Cao, Jian; Huang, Xian; Organic letters 10 (2008) 5537–5540; doi:10.1021/ol8023083

data_1504978
_publ_section_title
;
 Palladium-catalyzed highly regioselective [3 + 2] cycloaddition reactions
 of alkylidenecyclopropa[b]naphthalenes with alkenes or alkynes: an
 efficient synthesis of 1(3)-alkylidene-2,3-dihydro-1H-benzo[f]indenes and
 1-alkylidene-1H-benzo[f]indenes.
;
_journal_issue                   24
_journal_name_full               'Organic letters'
_journal_page_first              5537
_journal_page_last               5540
_journal_paper_doi               10.1021/ol8023083
_journal_volume                  10
_journal_year                    2008
_chemical_formula_sum            'C30 H28'
_chemical_formula_weight         388.52
_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                 101.360(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.8669(13)
_cell_length_b                   9.9929(11)
_cell_length_c                   19.656(2)
_cell_measurement_reflns_used    2049
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      46.703
_cell_measurement_theta_min      4.592
_cell_volume                     2285.2(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0500
_diffrn_reflns_av_sigmaI/netI    0.0617
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            12207
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         1.75
_exptl_absorpt_coefficient_mu    0.063
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.75431
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.129
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             832
_exptl_crystal_size_max          0.456
_exptl_crystal_size_mid          0.344
_exptl_crystal_size_min          0.257
_refine_diff_density_max         0.242
_refine_diff_density_min         -0.200
_refine_diff_density_rms         0.034
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.919
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     272
_refine_ls_number_reflns         4490
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.919
_refine_ls_R_factor_all          0.1006
_refine_ls_R_factor_gt           0.0577
_refine_ls_shift/su_max          0.028
_refine_ls_shift/su_mean         0.006
_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          0.1361
_refine_ls_wR_factor_ref         0.1548
_reflns_number_gt                2615
_reflns_number_total             4490
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol8023083_si_001.cif
_cod_data_source_block           cd28310
_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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               1504978