Effect of steric crowding on ion selectivity for calix-crown hybrid ionophores: experimental, molecular modeling and crystallographic studies
Patra, Subrata; Maity, Debdeep; Sen, Anik; Suresh, E.; Ganguly, Bishwajit; Paul, Parimal; New Journal of Chemistry 34 (2010) 2796–; doi:10.1039/b9nj00587k

data_7053380
_publ_section_title
;
 Effect of steric crowding on ion selectivity for calix-crown hybrid
 ionophores: experimental, molecular modeling and crystallographic studies
;
_journal_issue                   12
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              2796
_journal_paper_doi               10.1039/b9nj00587k
_journal_volume                  34
_journal_year                    2010
_chemical_formula_sum            'C49 H57 N O8 S'
_chemical_formula_weight         820.02
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
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_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                 104.276(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.9671(12)
_cell_length_b                   10.0972(7)
_cell_length_c                   25.6043(19)
_cell_measurement_temperature    100(2)
_cell_volume                     4251.1(5)
_computing_cell_refinement       'BRUKER SMART'
_computing_data_collection       'BRUKER SMART'
_computing_data_reduction        'BRUKER SAINT'
_computing_molecular_graphics    ORTEP
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'BRUKER SMART APEX CCD DIFFRACTOMETER'
_diffrn_measurement_method       'OMEGA-PHI SCAN'
_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  0.0722
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_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -11
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_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            21383
_diffrn_reflns_theta_full        25.00
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_diffrn_reflns_theta_min         1.64
_exptl_absorpt_coefficient_mu    0.133
_exptl_absorpt_correction_T_max  0.9714
_exptl_absorpt_correction_T_min  0.9390
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'BRUKER SADABS'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.281
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       BLOCKS
_exptl_crystal_F_000             1752
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.34
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.994
_refine_diff_density_min         -0.336
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_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.17(12)
_refine_ls_extinction_method     none
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_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^)+(0.0576P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1264
_refine_ls_wR_factor_ref         0.1367
_reflns_number_gt                6064
_reflns_number_total             7930
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b9nj00587k.txt
_cod_data_source_block           compound1
_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.

'_exptl_absorpt_correction_type' value 'MULTI-SCAN'
changed to 'multi-scan' 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      P21
_cod_database_code               7053380