N-heterocyclic carbene catalyzed reaction of cinnamils leading to the formation of 2,3,8-triaryl vinyl fulvenes: an uncommon transformation.
Sinu, C. R.; Suresh, Eringathodi; Nair, Vijay; Organic letters 15 (2013) 6230–6233; doi:10.1021/ol4030748

data_1513237
_publ_section_title
;
 N-heterocyclic carbene catalyzed reaction of cinnamils leading to the
 formation of 2,3,8-triaryl vinyl fulvenes: an uncommon transformation.
;
_journal_issue                   24
_journal_name_full               'Organic letters'
_journal_page_first              6230
_journal_page_last               6233
_journal_paper_doi               10.1021/ol4030748
_journal_volume                  15
_journal_year                    2013
_chemical_formula_sum            'C29 H26'
_chemical_formula_weight         374.50
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                92.588(2)
_cell_angle_beta                 94.143(2)
_cell_angle_gamma                97.956(2)
_cell_formula_units_Z            2
_cell_length_a                   6.2651(7)
_cell_length_b                   11.9132(12)
_cell_length_c                   14.2495(15)
_cell_measurement_reflns_used    5615
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.23
_cell_measurement_theta_min      2.87
_cell_volume                     1048.92(19)
_computing_cell_refinement       'BRUKER SMART'
_computing_data_collection       'BRUKER SMART'
_computing_data_reduction        'BRUKER SAINT'
_computing_molecular_graphics    ORTEP
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.980
_diffrn_measured_fraction_theta_max 0.980
_diffrn_measurement_device_type  'BRUKER SMART APEX CCD DIFFARACTOMETER'
_diffrn_measurement_method       'OMEGA-PHI SCAN'
_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  0.0193
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_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            8675
_diffrn_reflns_theta_full        27.00
_diffrn_reflns_theta_max         27.00
_diffrn_reflns_theta_min         1.44
_exptl_absorpt_coefficient_mu    0.067
_exptl_absorpt_correction_T_max  0.9920
_exptl_absorpt_correction_T_min  0.9777
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'BRUKER SADABS'
_exptl_crystal_colour            COLOURLESS
_exptl_crystal_density_diffrn    1.186
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       BLOCKS
_exptl_crystal_F_000             400
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.258
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_refine_diff_density_rms         0.044
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     355
_refine_ls_number_reflns         4474
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.041
_refine_ls_R_factor_all          0.0461
_refine_ls_R_factor_gt           0.0429
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0680P)^2^+0.2967P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1197
_refine_ls_wR_factor_ref         0.1233
_reflns_number_gt                4067
_reflns_number_total             4474
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol4030748_si_002.cif
_cod_data_source_block           crs645am
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'MULTI-SCAN'
changed to 'multi-scan' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1513237