Macrocyclic Cyclophanes with Two and Three α,ω-Dichalcogena-1,4-diethynylaryl Units: Syntheses and Structural Properties
Daniel B. Werz; Felix R. Fischer; Stefan C. Kornmayer; Frank Rominger; Rolf Gleiter; Journal of Organic Chemistry 73 (2008) 8021–8029; doi:10.1021/jo801378p

data_4023746
_publ_contact_author_address
;
        Organisch-Chemisches Institut
        Universit\"at Heidelberg
        Im Neuenheimer Feld 270
        D-69120 Heidelberg
        Germany
;
_publ_contact_author_email       rolf.gleiter@oci.uni-heidelberg.de
_publ_contact_author_fax         '049 6221 54- 4205'
_publ_contact_author_name        'Gleiter, Rolf'
_publ_contact_author_phone       '049 6221 54- 8400'
_publ_section_title
;
 Macrocyclic Cyclophanes with Two and Three
 \a,\w-Dichalcogena-1,4-diethynylaryl Units:
 Syntheses and Structural Properties
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              8021
_journal_page_last               8029
_journal_paper_doi               10.1021/jo801378p
_journal_volume                  73
_journal_year                    2008
_chemical_formula_sum            'C42 H52 Se4'
_chemical_formula_weight         872.68
_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                 95.294(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   5.9637(6)
_cell_length_b                   19.835(2)
_cell_length_c                   16.5139(17)
_cell_measurement_temperature    100(2)
_cell_volume                     1945.1(3)
_computing_cell_refinement       'Bruker XSCANS'
_computing_data_collection       'Bruker XSCANS'
_computing_data_reduction        'Bruker SHELXTL'
_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      100(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker APEX'
_diffrn_measurement_method       '\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  0.0357
_diffrn_reflns_av_sigmaI/netI    0.0333
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            19785
_diffrn_reflns_theta_full        28.32
_diffrn_reflns_theta_max         28.32
_diffrn_reflns_theta_min         2.40
_exptl_absorpt_coefficient_mu    3.800
_exptl_absorpt_correction_T_max  0.6799
_exptl_absorpt_correction_T_min  0.6379
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Blessing, Acta Cryst. (1995) A51 33-38.'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.490
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       polyhedron
_exptl_crystal_F_000             880
_exptl_crystal_size_max          0.13
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.591
_refine_diff_density_min         -0.279
_refine_diff_density_rms         0.075
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     312
_refine_ls_number_reflns         4801
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.0356
_refine_ls_R_factor_gt           0.0270
_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^)+(0.0261P)^2^+0.5093P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0568
_refine_ls_wR_factor_ref         0.0594
_reflns_number_gt                4103
_reflns_number_total             4801
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo801378p_si_002_09.cif
_cod_data_source_block           ff4_(in_paper_8(5))
_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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4023746