An in-ketocyclophane.
Qin, Qian; Mague, Joel T.; Pascal, Jr, Robert A; Organic letters 12 (2010) 928–930; doi:10.1021/ol9028572

data_1503421
_publ_section_title
;
 An in-ketocyclophane.
;
_journal_issue                   5
_journal_name_full               'Organic letters'
_journal_page_first              928
_journal_page_last               930
_journal_paper_doi               10.1021/ol9028572
_journal_volume                  12
_journal_year                    2010
_chemical_formula_moiety         'C23 H20 O5 S2'
_chemical_formula_sum            'C23 H20 O5 S2'
_chemical_formula_weight         440.51
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 115.921(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   20.0117(15)
_cell_length_b                   10.0091(9)
_cell_length_c                   10.6634(9)
_cell_measurement_reflns_used    9335
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.74
_cell_measurement_theta_min      2.33
_cell_volume                     1921.0(3)
_computing_cell_refinement       'Bruker SAINT (Bruker-AXS 2008)'
_computing_data_collection       'Bruker APEX2 (Bruker-AXS, 2009)'
_computing_data_reduction        'Bruker SAINT (Bruker-AXS 2008)'
_computing_molecular_graphics    'Bruker SHELXTL(Bruker-AXS 2008a)'
_computing_publication_material  'Bruker SHELXTL(Bruker-AXS 2008a)'
_computing_structure_refinement  'SHELXL (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'Bruker APEX-I CCD'
_diffrn_measurement_method       '\f and \w 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  0.0377
_diffrn_reflns_av_sigmaI/netI    0.0225
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            16589
_diffrn_reflns_theta_full        28.78
_diffrn_reflns_theta_max         28.78
_diffrn_reflns_theta_min         2.26
_exptl_absorpt_coefficient_mu    0.313
_exptl_absorpt_correction_T_max  0.9649
_exptl_absorpt_correction_T_min  0.8928
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2008a)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.523
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             920
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.446
_refine_diff_density_min         -0.663
_refine_diff_density_rms         0.070
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     137
_refine_ls_number_reflns         2478
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.059
_refine_ls_R_factor_all          0.0482
_refine_ls_R_factor_gt           0.0408
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0545P)^2^+3.9347P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1090
_refine_ls_wR_factor_ref         0.1149
_reflns_number_gt                2153
_reflns_number_total             2478
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol9028572_si_004.cif
_cod_data_source_block           rp008
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               1503421