Decasilahexahydrotriquinacene and Decasilaisotwistane: σ Conjugation on a Bowl Surface.
Tsurusaki, Akihiro; Koyama, Yu; Kyushin, Soichiro; Journal of the American Chemical Society  (2017) –; doi:10.1021/jacs.7b00250

data_4125534
_publ_section_title
;
 Decasilahexahydrotriquinacene and Decasilaisotwistane: \s Conjugation on
 a Bowl Surface.
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_paper_doi               10.1021/jacs.7b00250
_journal_year                    2017
_chemical_formula_moiety         'C16 H48 Si10'
_chemical_formula_sum            'C16 H48 Si10'
_chemical_formula_weight         521.44
_chemical_melting_point          '120 \%C, sublimed'
_chemical_name_common            decasilaisotwistane
_chemical_name_systematic
; 
 permethyltricyclo[4.3.1.0^3,7^]decasilane
;
_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                 95.231(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   16.929(3)
_cell_length_b                   11.5469(15)
_cell_length_c                   33.309(5)
_cell_measurement_reflns_used    8039
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      29.8
_cell_measurement_theta_min      2.1
_cell_volume                     6484.0(17)
_computing_cell_refinement       'CrystalClear-SM Expert 2.1 b29 (Rigaku, 2013)'
_computing_data_collection       'CrystalClear-SM Expert 2.1 b29 (Rigaku, 2013)'
_computing_data_reduction        'CrystalClear-SM Expert 2.1 b29 (Rigaku, 2013)'
_computing_molecular_graphics    '<i>ORTEP-3</i> (Farrugia, 1997)'
_computing_publication_material
'<i>SHELXL97</i> and <i>Yadokari-XG 2009</i> (Kabuto <i>et al.</i>, 2009)'
_computing_structure_refinement  '<i>SHELXS97</i> (Sheldrick, 2008)'
_computing_structure_solution    '<i>SHELXS97</i> (Sheldrick, 2008)'
_diffrn_ambient_temperature      123(2)
_diffrn_detector_area_resol_mean 5.8140
_diffrn_measured_fraction_theta_full 0.971
_diffrn_measured_fraction_theta_max 0.971
_diffrn_measurement_device_type  'Rigaku Pilatus 200K'
_diffrn_measurement_method       'profile data from \w-scans'
_diffrn_radiation_monochromator  Confocal
_diffrn_radiation_source         'Rotating Anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0251
_diffrn_reflns_av_sigmaI/netI    0.0207
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       43
_diffrn_reflns_limit_l_min       -43
_diffrn_reflns_number            45709
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.61
_exptl_absorpt_coefficient_mu    0.409
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.942
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   '(R. Jacobson, private communication, 1998)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.068
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             2272
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.317
_refine_diff_density_min         -0.251
_refine_diff_density_rms         0.054
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.074
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     251
_refine_ls_number_reflns         7216
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.074
_refine_ls_R_factor_all          0.0332
_refine_ls_R_factor_gt           0.0313
_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^)+(0.0287P)^2^+7.2089P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0708
_refine_ls_wR_factor_ref         0.0722
_reflns_number_gt                6864
_reflns_number_total             7216
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja7b00250_si_002.cif
_cod_data_source_block           compound_2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Numerical' changed to
'numerical' according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 
;
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               4125534