Formation of an heterochiral supramolecular cage by diastereomer self-discrimination: fluorescence enhancement and C60 sensing
Arribas, Carlos Solano; Wendt, Ola F.; Sundin, Anders P.; Carling, Carl-Johan; Wang, Ruiyao; Lemieux, Robert P.; Wärnmark, Kenneth; Chemical Communications 46 (2010) 4381–4383; doi:10.1039/b927030b

data_7111578
_publ_section_title
;
 Formation of an heterochiral supramolecular cage by diastereomer
 self-discrimination: fluorescence enhancement and C60 sensing
;
_journal_issue                   24
_journal_name_full               'Chemical Communications'
_journal_page_first              4381
_journal_page_last               4383
_journal_paper_doi               10.1039/b927030b
_journal_volume                  46
_journal_year                    2010
_chemical_formula_sum            'C18 H19 I2 N2'
_chemical_formula_weight         517.15
_chemical_name_systematic
;
?
;
_space_group_IT_number           79
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'I 4'
_symmetry_space_group_name_H-M   'I 4'
_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                   12.8256(9)
_cell_length_b                   12.8256(9)
_cell_length_c                   10.7457(11)
_cell_measurement_temperature    180(2)
_cell_volume                     1767.6(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_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      180(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_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  0.0764
_diffrn_reflns_av_sigmaI/netI    0.0449
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            5255
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.18
_exptl_absorpt_coefficient_mu    3.557
_exptl_absorpt_correction_T_max  0.3321
_exptl_absorpt_correction_T_min  0.1716
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.943
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             988
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.06
_platon_squeeze_details
;
Difference electron density maps revealed the presence of disordered
lattice solvate molecules, which were ultimately modeled through the
use of the SQUEEZE subroutine of the PLATON software suite. PLATON
Reference: P.v.d. Sluis & A.L. Spek. Acta Cryst. (1990), A46, 194.
Two solvent accessible voids per lattice were found. Each void comprises a
total volume of 218.0 A3 and contributes a total of 59.8 electrons.
The void was assigned to a disordered hexane molecule, which
contributes 50 electrons, and ocuppy about 120 A3 in space. The
contributions have been included in all derived crystal quantities
although the precise composition of the lattice solvate is somewhat
speculative.
;
_refine_diff_density_max         0.342
_refine_diff_density_min         -0.648
_refine_diff_density_rms         0.088
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.00(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.018
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     96
_refine_ls_number_reflns         1558
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.018
_refine_ls_R_factor_all          0.0278
_refine_ls_R_factor_gt           0.0266
_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^)+(0.0358P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0657
_refine_ls_wR_factor_ref         0.0661
_reflns_number_gt                1459
_reflns_number_total             1558
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b927030bsup1.cif
_cod_data_source_block           rl03tsqz
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
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 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      I4
_cod_database_code               7111578