Siloles symmetrically substituted on their 2,5-positions with electron-accepting and donating moieties: facile synthesis, aggregation-enhanced emission, solvatochromism, and device application
Mei, Ju; Wang, Jian; Sun, Jing Zhi; Zhao, Hui; Yuan, Wangzhang; Deng, Chunmei; Chen, Shuming; Sung, Herman H. Y.; Lu, Ping; Qin, Anjun; Kwok, Hoi Sing; Ma, Yuguang; Williams, Ian D.; Tang, Ben Zhong; Chemical Science 3 (2012) 549–; doi:10.1039/c1sc00688f

data_1514950
_publ_section_title
;
 Siloles symmetrically substituted on their 2,5-positions with
 electron-accepting and donating moieties: facile synthesis,
 aggregation-enhanced emission, solvatochromism, and device application
;
_journal_issue                   2
_journal_name_full               'Chemical Science'
_journal_page_first              549
_journal_paper_doi               10.1039/c1sc00688f
_journal_volume                  3
_journal_year                    2012
_chemical_formula_sum            'C54 H44 N2 Si'
_chemical_formula_weight         749.00
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 93.111(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   20.3587(4)
_cell_length_b                   11.0369(3)
_cell_length_c                   18.2729(8)
_cell_measurement_reflns_used    6520
_cell_measurement_temperature    133(2)
_cell_measurement_theta_max      71.46
_cell_measurement_theta_min      3.16
_cell_volume                     4099.8(2)
_computing_cell_refinement
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.55 (release 05-01-2010 CrysAlis171 .NET)
(compiled Jan 5 2010,16:28:46)
;
_computing_data_collection
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.55 (release 05-01-2010 CrysAlis171 .NET)
(compiled Jan 5 2010,16:28:46)
;
_computing_data_reduction
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.55 (release 05-01-2010 CrysAlis171 .NET)
(compiled Jan 5 2010,16:28:46)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      133(2)
_diffrn_detector_area_resol_mean 15.9578
_diffrn_measured_fraction_theta_full 0.963
_diffrn_measured_fraction_theta_max 0.962
_diffrn_measurement_device_type  'Xcalibur, Sapphire3, Gemini ultra'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_source         'Enhance Ultra (Cu) X-ray Source'
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.5418
_diffrn_reflns_av_R_equivalents  0.0273
_diffrn_reflns_av_sigmaI/netI    0.0369
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            13752
_diffrn_reflns_theta_full        66.50
_diffrn_reflns_theta_max         67.47
_diffrn_reflns_theta_min         4.35
_exptl_absorpt_coefficient_mu    0.800
_exptl_absorpt_correction_T_max  1.00
_exptl_absorpt_correction_T_min  0.66
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.55 (release 05-01-2010 CrysAlis171 .NET)
(compiled Jan 5 2010,16:28:46)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.213
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1584
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.37
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.288
_refine_diff_density_min         -0.283
_refine_diff_density_rms         0.034
_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     516
_refine_ls_number_reflns         7105
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.020
_refine_ls_R_factor_all          0.0485
_refine_ls_R_factor_gt           0.0371
_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^)+(0.0500P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0902
_refine_ls_wR_factor_ref         0.0933
_reflns_number_gt                5469
_reflns_number_total             7105
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c1sc00688f.txt
_cod_data_source_block           DMTPS-DPA
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/retrospective/RSC/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 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               1514950