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_1556392
_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         'C40 H36'
_chemical_formula_sum            'C40 H36'
_chemical_formula_weight         516.69
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     iterative
_audit_creation_date             2013-11-13
_audit_creation_method
;
  Olex2 1.2
  (compiled Apr 23 2013 17:54:37, GUI svn.r4466)
;
_cell_angle_alpha                90
_cell_angle_beta                 92.886(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.6639(4)
_cell_length_b                   16.9311(6)
_cell_length_c                   13.6040(4)
_cell_measurement_temperature    180.15
_cell_volume                     2913.19(16)
_computing_molecular_graphics
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_publication_material
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_structure_refinement
;
XL, G.M. Sheldrick, Acta Cryst.
(2008). A64, 112-122
;
_computing_structure_solution    'SUPERFLIP, J. Appl. Cryst. (2007) 40, 786-790'
_diffrn_ambient_temperature      180.15
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.999
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0281
_diffrn_reflns_av_unetI/netI     0.0321
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            15003
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.014
_diffrn_reflns_theta_min         2.835
_exptl_absorpt_coefficient_mu    0.066
_exptl_absorpt_correction_T_min  0.990
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.178
_exptl_crystal_description       block
_exptl_crystal_F_000             1104
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.244
_refine_diff_density_min         -0.192
_refine_diff_density_rms         0.037
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.020
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     361
_refine_ls_number_reflns         5737
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.020
_refine_ls_R_factor_all          0.0590
_refine_ls_R_factor_gt           0.0436
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0399P)^2^+1.1189P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0997
_refine_ls_wR_factor_ref         0.1090
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4525
_reflns_number_total             5737
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c3qo00019b.txt
_cod_data_source_block           13nov07f
_cod_original_cell_volume        2913.20(16)
_cod_database_code               1556392
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C15(H15A,H15B), C16(H16A,H16B), C17(H17A,H17B), C18(H18A,H18B), C31(H31A,
 H31B), C32(H32A,H32B), C33(H33A,H33B), C34(H34A,H34B)
2.b Aromatic/amide H refined with riding coordinates:
 C10(H10), C11(H11), C12(H12), C13(H13), C14(H14), C20(H20), C21(H21),
 C22(H22), C23(H23), C24(H24), C26(H26), C27(H27), C28(H28), C29(H29), C30(H30),
  C36(H36), C37(H37), C38(H38), C39(H39), C40(H40)
;
_shelx_estimated_absorpt_t_max   0.993
_shelx_estimated_absorpt_t_min   0.990
_shelxl_version_number           2013-3