Synthesis and characterization of cyclooctatetrathiophenes with different connection sequences.
Wang, Yong; Song, Jinsheng; Xu, Li; Kan, Yuhe; Shi, Jianwu; Wang, Hua; The Journal of organic chemistry 79 (2014) 2255–2262; doi:10.1021/jo500278d

data_4029111
_publ_section_title
;
 Synthesis and characterization of cyclooctatetrathiophenes with different
 connection sequences.
;
_journal_issue                   5
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              2255
_journal_page_last               2262
_journal_paper_doi               10.1021/jo500278d
_journal_volume                  79
_journal_year                    2014
_chemical_formula_sum            'C28 H40 S4 Si4'
_chemical_formula_weight         617.20
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 94.648(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.310(3)
_cell_length_b                   12.900(4)
_cell_length_c                   27.078(8)
_cell_measurement_reflns_used    618
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      16.26
_cell_measurement_theta_min      2.53
_cell_volume                     3589.5(19)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0372
_diffrn_reflns_av_sigmaI/netI    0.0489
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            17910
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.51
_exptl_absorpt_coefficient_mu    0.414
_exptl_absorpt_correction_T_max  0.9108
_exptl_absorpt_correction_T_min  0.8486
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            'light green'
_exptl_crystal_density_diffrn    1.142
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1312
_exptl_crystal_size_max          0.41
_exptl_crystal_size_mid          0.38
_exptl_crystal_size_min          0.23
_refine_diff_density_max         0.519
_refine_diff_density_min         -0.410
_refine_diff_density_rms         0.053
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.100
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     392
_refine_ls_number_reflns         6314
_refine_ls_number_restraints     18
_refine_ls_restrained_S_all      1.100
_refine_ls_R_factor_all          0.0950
_refine_ls_R_factor_gt           0.0588
_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^)+(0.1026P)^2^+0.0451P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1711
_refine_ls_wR_factor_ref         0.1873
_reflns_number_gt                4096
_reflns_number_total             6314
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo500278d_si_004.cif
_cod_data_source_block           1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/current/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' according to
/usr/data/users/saulius/crontab/automatic-downloads/current/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 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_cell_volume        3589(2)
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               4029111