Isolation and X-ray Structure of a Trimeric 1,4-Dilithio-1,3-butadiene and a Dimeric Me3Si-Substituted 1,4-Dilithio-1,3-butadiene
Liu, Lantao; Zhang, Wen-Xiong; Luo, Qian; Li, Heng; Xi, Zhenfeng; Organometallics 29 (2010) 278–; doi:10.1021/om900872u

data_4067343
_publ_section_title
;
 Isolation and X-ray Structure of a Trimeric 1,4-Dilithio-1,3-butadiene
 and a Dimeric Me3Si-Substituted 1,4-Dilithio-1,3-butadiene
;
_journal_issue                   1
_journal_name_full               Organometallics
_journal_page_first              278
_journal_paper_doi               10.1021/om900872u
_journal_volume                  29
_journal_year                    2010
_chemical_formula_sum            'C36 H60 Li6'
_chemical_formula_weight         534.48
_chemical_name_systematic
; 
 ? 
;
_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                81.10(3)
_cell_angle_beta                 80.64(3)
_cell_angle_gamma                72.05(3)
_cell_formula_units_Z            4
_cell_length_a                   13.029(3)
_cell_length_b                   16.830(3)
_cell_length_c                   17.572(4)
_cell_measurement_reflns_used    33385
_cell_measurement_temperature    163(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.15
_cell_volume                     3594.3(15)
_computing_cell_refinement       Rapid-AUTO
_computing_data_collection       'Rapid-AUTO (Rigaku,2000)'
_computing_data_reduction        'CrystalStructure (Rigaku/MSC,2000)'
_computing_molecular_graphics    'Siemens SHELXTL V4.2,(Sheldrick,1990)'
_computing_publication_material  SHELXL-97,(Sheldrick,1997)
_computing_structure_refinement  SHELXL-97,(Sheldrick,1997)
_computing_structure_solution    SHELXS-97,(Sheldrick,1997)
_diffrn_ambient_temperature      163(2)
_diffrn_detector_area_resol_mean 10.00
_diffrn_measured_fraction_theta_full 0.978
_diffrn_measured_fraction_theta_max 0.978
_diffrn_measurement_device_type  'Rigaku RAXIS RAPID IP'
_diffrn_measurement_method       \W
_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  0.04800999
_diffrn_reflns_av_sigmaI/netI    0.1613
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            33385
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.15
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.052
_exptl_absorpt_correction_T_max  0.9796
_exptl_absorpt_correction_T_min  0.9696
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
; 
                                  HIGASHI, T. (1995). Abscor-Empirical
                                  Absorption Correction based on Fourier
                                  Series Approximation.
                                  Rigaku Corporation,Tokyo,Japan.
;
_exptl_crystal_density_diffrn    0.988
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1176
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.60
_exptl_crystal_size_min          0.40
_refine_diff_density_max         0.856
_refine_diff_density_min         -0.423
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.008
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     781
_refine_ls_number_reflns         16116
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.008
_refine_ls_R_factor_all          0.2197
_refine_ls_R_factor_gt           0.0816
_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^)+(0.0900P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1904
_refine_ls_wR_factor_ref         0.2346
_reflns_number_gt                5565
_reflns_number_total             16116
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om900872u_si_002.cif
_cod_data_source_block           8602a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Empirical' changed to
'empirical' 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_cell_volume        3594.4(12)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4067343