Synthesis of semibullvalene derivatives via Co2(CO)8-mediated cyclodimerization of 1,4-dilithio-1,3-butadienes
Zhang, Shaoguang; Zhan, Ming; Wang, Qifeng; Wang, Chao; Zhang, Wen-Xiong; Xi, Zhenfeng; Org. Chem. Front. 1 (2014) 130–; doi:10.1039/C3QO00019B

data_1556390
_publ_section_title
;
 Synthesis of semibullvalene derivatives via Co2(CO)8-mediated
 cyclodimerization of 1,4-dilithio-1,3-butadienes
;
_journal_issue                   2
_journal_name_full               'Org. Chem. Front.'
_journal_page_first              130
_journal_paper_doi               10.1039/C3QO00019B
_journal_volume                  1
_journal_year                    2014
_chemical_formula_moiety         'C34 H24 O2'
_chemical_formula_sum            'C34 H24 O2'
_chemical_formula_weight         464.53
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_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                 102.84(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.409(2)
_cell_length_b                   8.8005(18)
_cell_length_c                   24.458(5)
_cell_measurement_reflns_used    6851
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.4797
_cell_measurement_theta_min      1.7080
_cell_volume                     2394.3(9)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2008)'
_computing_molecular_graphics
;
 Mercury: visualization and analysis of crystal structures, C. F. Macrae,
 P. R. Edgington, P. McCabe, E. Pidcock, G. P. Shields, R. Taylor,
 M. Towler and J. van de Streek, J. Appl. Cryst., 39, 453-457, 2006.
;
_computing_publication_material  'SHELX-97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELX-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELX-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.981
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device_type  'Saturn724+ CCD'
_diffrn_measurement_method       '\w scans at fixed \c = 45\%'
_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  0.0443
_diffrn_reflns_av_sigmaI/netI    0.0488
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            15719
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         2.95
_exptl_absorpt_coefficient_mu    0.079
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.6771
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'CrystalClear (Rigaku Inc., 2008)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.289
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             976
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.175
_refine_diff_density_min         -0.155
_refine_diff_density_rms         0.039
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.217
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     325
_refine_ls_number_reflns         5384
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.217
_refine_ls_R_factor_all          0.0870
_refine_ls_R_factor_gt           0.0744
_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^)+(0.0279P)^2^+1.1828P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1312
_refine_ls_wR_factor_ref         0.1370
_reflns_number_gt                4713
_reflns_number_total             5384
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3qo00019b.txt
_cod_data_source_block           a
_cod_original_cell_volume        2394.3(8)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               1556390