Regioisomeric allene dimer formation by the reaction of tetraarylbutatrienes with tetracyanoethene.
Ueta, Shoko; Hida, Kazuo; Nishiuchi, Masaki; Kawamura, Yasuhiko; Organic & biomolecular chemistry 12 (2014) 2784–2791; doi:10.1039/c3ob42574f

data_7153716
_publ_section_title
;
 Regioisomeric allene dimer formation by the reaction of
 tetraarylbutatrienes with tetracyanoethene.
;
_journal_issue                   17
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              2784
_journal_page_last               2791
_journal_paper_doi               10.1039/c3ob42574f
_journal_volume                  12
_journal_year                    2014
_chemical_formula_sum            'C36 H21 Cl2 N3 O3'
_chemical_formula_weight         614.46
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 98.339(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   28.4477(18)
_cell_length_b                   10.8997(6)
_cell_length_c                   23.5205(14)
_cell_measurement_temperature    117(2)
_cell_volume                     7215.9(7)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      117(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54187
_diffrn_reflns_av_R_equivalents  0.0758
_diffrn_reflns_av_sigmaI/netI    0.0779
_diffrn_reflns_limit_h_max       34
_diffrn_reflns_limit_h_min       -33
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            38808
_diffrn_reflns_theta_full        68.24
_diffrn_reflns_theta_max         68.24
_diffrn_reflns_theta_min         3.14
_exptl_absorpt_coefficient_mu    1.903
_exptl_absorpt_correction_T_max  0.8944
_exptl_absorpt_correction_T_min  0.5991
_exptl_crystal_density_diffrn    1.131
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             2528
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.232
_refine_diff_density_min         -0.532
_refine_diff_density_rms         0.067
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.985
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     399
_refine_ls_number_reflns         6596
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.985
_refine_ls_R_factor_all          0.1457
_refine_ls_R_factor_gt           0.0839
_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^)+(0.1442P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2156
_refine_ls_wR_factor_ref         0.2747
_reflns_number_gt                2875
_reflns_number_total             6596
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3ob42574f2.cif
_cod_data_source_block           ydkr
_cod_database_code               7153716