1,2-Dialkynyldisilenes: silicon analogues of (E)-enediyne
Sato, Takahiro; Mizuhata, Yoshiyuki; Tokitoh, Norihiro; Chemical Communications 46 (2010) 4402–4404; doi:10.1039/c0cc00406e

data_7111693
_publ_section_title
;
 1,2-Dialkynyldisilenes: silicon analogues of (E)-enediyne
;
_journal_issue                   24
_journal_name_full               'Chemical Communications'
_journal_page_first              4402
_journal_page_last               4404
_journal_paper_doi               10.1039/c0cc00406e
_journal_volume                  46
_journal_year                    2010
_chemical_formula_moiety         'C76 H144 Si16'
_chemical_formula_sum            'C76 H144 Si16'
_chemical_formula_weight         1507.35
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      15
_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                 114.0243(16)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   32.0708(5)
_cell_length_b                   13.4092(2)
_cell_length_c                   23.4405(5)
_cell_measurement_temperature    103(2)
_cell_measurement_theta_max      25.00
_cell_measurement_theta_min      2.31
_cell_volume                     9207.2(3)
_computing_cell_refinement       HKL2000
_computing_data_collection       CrystalClear
_computing_data_reduction        'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    SHELXS-97
_diffrn_ambient_temperature      103(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'RIGAKU Saturn70'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.0357
_diffrn_reflns_av_sigmaI/netI    0.0315
_diffrn_reflns_limit_h_max       37
_diffrn_reflns_limit_h_min       -37
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            38386
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.31
_exptl_absorpt_coefficient_mu    0.257
_exptl_absorpt_correction_T_max  0.9503
_exptl_absorpt_correction_T_min  0.9503
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Jacobson, R. (1998) Private communication'
_exptl_crystal_density_diffrn    1.087
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             3296
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.470
_refine_diff_density_min         -0.277
_refine_diff_density_rms         0.044
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.021
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     477
_refine_ls_number_reflns         8076
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.021
_refine_ls_R_factor_all          0.0456
_refine_ls_R_factor_gt           0.0322
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0432P)^2^+6.1962P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0784
_refine_ls_wR_factor_ref         0.0843
_reflns_number_gt                6521
_reflns_number_total             8076
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0cc00406esup1.cif
_cod_data_source_block           bis(phenylethynyl)disilene
_cod_original_sg_symbol_Hall     ' -C 2yc '
_cod_original_sg_symbol_H-M      ' C 2/c'
_cod_database_code               7111693