A novel ditopic receptor and reversal of anion binding selectivity in the presence and absence of bound cation.
Tumcharern, Gamolwan; Tuntulani, Thawatchai; Coles, Simon J.; Hursthouse, Michael B.; Kilburn, Jeremy D.; Organic letters 5 (2003) 4971–4974; doi:10.1021/ol035894h

data_1507411
_publ_section_title
;
 A novel ditopic receptor and reversal of anion binding selectivity in the
 presence and absence of bound cation.
;
_journal_issue                   26
_journal_name_full               'Organic letters'
_journal_page_first              4971
_journal_page_last               4974
_journal_paper_doi               10.1021/ol035894h
_journal_volume                  5
_journal_year                    2003
_chemical_formula_sum            'C72 H104 N6 O10 S2'
_chemical_formula_weight         1277.73
_chemical_name_systematic        ?
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   23.8484(9)
_cell_length_b                   20.3212(6)
_cell_length_c                   15.0907(4)
_cell_measurement_reflns_used    17736
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      24.41
_cell_measurement_theta_min      2.91
_cell_volume                     7313.4(4)
_computing_cell_refinement       'DENZO & COLLECT'
_computing_data_collection
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, 1998)'
_computing_data_reduction        'DENZO & COLLECT'
_computing_molecular_graphics    'PLATON (Spek, 1990)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Bruker-Nonius KappaCCD'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0646
_diffrn_reflns_av_sigmaI/netI    0.0830
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            25269
_diffrn_reflns_theta_full        24.40
_diffrn_reflns_theta_max         24.40
_diffrn_reflns_theta_min         2.96
_diffrn_standards_decay_%        negligible
_exptl_absorpt_coefficient_mu    0.131
_exptl_absorpt_correction_T_max  0.9922
_exptl_absorpt_correction_T_min  0.9667
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SORTAV (Blessing, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.160
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             2760
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.358
_refine_diff_density_min         -0.227
_refine_diff_density_rms         0.045
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.75(9)
_refine_ls_extinction_coef       0.0017(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.010
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     851
_refine_ls_number_reflns         11335
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.010
_refine_ls_R_factor_all          0.0864
_refine_ls_R_factor_gt           0.0530
_refine_ls_shift/su_max          0.063
_refine_ls_shift/su_mean         0.003
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0711P)^2^+0.1388P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1214
_refine_ls_wR_factor_ref         0.1389
_reflns_number_gt                8181
_reflns_number_total             11335
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            ol035894hsi20030929_030615.cif
_cod_data_source_block           1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' 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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      Pna2(1)
_cod_database_code               1507411