Experimental and Computational Studies of Selective Recognition of Hg^2+^ by Amide Linked Lower Rim 1,3-Dibenzimidazole Derivative of Calix[4]arene: Species Characterization in Solution and that in the Isolated Complex, Including the Delineation of the Nanostructures
Roymon Joseph; Balaji Ramanujam; Amitabha Acharya; Anupam Khutia; Chebrolu P. Rao; Journal of Organic Chemistry 73 (2008) 5745–5758; doi:10.1021/jo800073g

data_4023569
_publ_section_title
;
 Experimental and Computational Studies of Selective Recognition of
 Hg^2+^ by Amide Linked Lower Rim 1,3-Dibenzimidazole Derivative of
 Calix[4]arene: Species Characterization in Solution and that in the
 Isolated Complex, Including the Delineation of the Nanostructures
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              5745
_journal_page_last               5758
_journal_paper_doi               10.1021/jo800073g
_journal_volume                  73
_journal_year                    2008
_chemical_formula_sum            'C136 H164 N4 O21'
_chemical_formula_weight         2190.71
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 96.133(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   14.4663(4)
_cell_length_b                   26.1325(7)
_cell_length_c                   17.0631(5)
_cell_measurement_reflns_used    13855
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      32.6156
_cell_measurement_theta_min      2.9317
_cell_volume                     6413.6(3)
_computing_cell_refinement       'CrysAlis RED, Oxford Diffraction Ltd.,'
_computing_data_collection       'CrysAlis CCD, Oxford Diffraction Ltd.,'
_computing_data_reduction        'CrysAlis RED, Oxford Diffraction Ltd.,'
_computing_molecular_graphics    Ortep3
_computing_publication_material  Shelx97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 15.9948
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'OXFORD DIFFRACTION XCALIBUR-S'
_diffrn_measurement_method       \w/q-scan
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1034
_diffrn_reflns_av_sigmaI/netI    0.1357
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       31
_diffrn_reflns_limit_k_min       -31
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            66808
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.94
_exptl_absorpt_coefficient_mu    0.076
_exptl_absorpt_correction_T_max  0.9791
_exptl_absorpt_correction_T_min  0.9733
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.31.7 (release 18-10-2006 CrysAlis171 .NET)
(compiled Oct 18 2006,16:28:17)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.134
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2352
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.28
_refine_diff_density_max         0.691
_refine_diff_density_min         -0.375
_refine_diff_density_rms         0.054
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   1.3(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.070
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1478
_refine_ls_number_reflns         22341
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.070
_refine_ls_R_factor_all          0.1458
_refine_ls_R_factor_gt           0.0863
_refine_ls_shift/su_max          0.045
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0553P)^2^+4.9051P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1492
_refine_ls_wR_factor_ref         0.1814
_reflns_number_gt                13689
_reflns_number_total             22341
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo800073g-File006.cif
_cod_data_source_block           L4
_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'
_cod_database_code               4023569