Coplanar Oligo(p-phenylenedisilenylene)s as Si═Si Analogues of Oligo(p-phenylenevinylene)s: Evidence for Extended π-Conjugation through the Carbon and Silicon π-Frameworks.
Li, Liangchun; Matsuo, Tsukasa; Hashizume, Daisuke; Fueno, Hiroyuki; Tanaka, Kazuyoshi; Tamao, Kohei; Journal of the American Chemical Society 137 (2015) 15026–15035; doi:10.1021/jacs.5b10113

data_4129742
_publ_section_title
;
 Coplanar Oligo(p-phenylenedisilenylene)s as Si&#x2550;Si Analogues of
 Oligo(p-phenylenevinylene)s: Evidence for Extended \p-Conjugation through
 the Carbon and Silicon \p-Frameworks.
;
_journal_issue                   47
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              15026
_journal_page_last               15035
_journal_paper_doi               10.1021/jacs.5b10113
_journal_volume                  137
_journal_year                    2015
_chemical_formula_moiety         'C30 H49 Br O'
_chemical_formula_sum            'C30 H49 Br O'
_chemical_formula_weight         505.60
_chemical_name_common            (HexO)MEindBr
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_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                 116.9161(19)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   25.656(5)
_cell_length_b                   11.2439(18)
_cell_length_c                   21.551(4)
_cell_measurement_reflns_used    7536
_cell_measurement_temperature    100
_cell_measurement_theta_max      29.1262
_cell_measurement_theta_min      2.6190
_cell_volume                     5543.4(17)
_computing_cell_refinement       CrystalClear
_computing_data_collection       CrystalClear
_computing_data_reduction        CrystalClear
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100
_diffrn_detector_area_resol_mean 7.31
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Rigaku AFC-10 with Saturn724+ CCD'
_diffrn_measurement_method       \w-scan
_diffrn_radiation_monochromator  cofocal
_diffrn_radiation_source         'fine-focus rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0559
_diffrn_reflns_av_sigmaI/netI    0.0391
_diffrn_reflns_limit_h_max       30
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            27758
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.62
_exptl_absorpt_coefficient_mu    1.502
_exptl_absorpt_correction_T_max  0.9287
_exptl_absorpt_correction_T_min  0.8767
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
 MULABS - Empirical Correction for Absorption Anisotropy.
 R.H. Blessing, Acta Crystallogr., Sect. A. 51, 33-38 (1995).
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.212
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2176
_exptl_crystal_size_max          0.09
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.550
_refine_diff_density_min         -0.318
_refine_diff_density_rms         0.065
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.034
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     298
_refine_ls_number_reflns         4865
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.034
_refine_ls_R_factor_all          0.0441
_refine_ls_R_factor_gt           0.0367
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0533P)^2^+2.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0876
_refine_ls_wR_factor_ref         0.0921
_reflns_number_gt                4219
_reflns_number_total             4865
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja5b10113_si_002.cif
_cod_data_source_block           (HexO)MEindBr
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'Multi-scan' was
changed to 'multi-scan' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_cell_volume        5543.5(16)
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               4129742