Colorimetric sensing of fluoride ion by new expanded calix[4]pyrrole through anion-π interaction.
Mahanta, Sanjeev P.; Kumar, B. Sathish; Baskaran, Sambath; Sivasankar, Chinnappan; Panda, Pradeepta K.; Organic letters 14 (2012) 548–551; doi:10.1021/ol203165x

data_1503560
_publ_section_title
;
 Colorimetric sensing of fluoride ion by new expanded calix[4]pyrrole
 through anion-\p interaction.
;
_journal_issue                   2
_journal_name_full               'Organic letters'
_journal_page_first              548
_journal_page_last               551
_journal_paper_doi               10.1021/ol203165x
_journal_volume                  14
_journal_year                    2012
_chemical_formula_moiety         'C15 H18 N2 O2'
_chemical_formula_sum            'C15 H18 N2 O2'
_chemical_formula_weight         258.31
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 91.766(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   5.6131(5)
_cell_length_b                   25.331(2)
_cell_length_c                   10.1079(9)
_cell_measurement_reflns_used    2509
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      22.52
_cell_measurement_theta_min      2.58
_cell_volume                     1436.5(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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      298(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  0.0555
_diffrn_reflns_av_sigmaI/netI    0.0525
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       30
_diffrn_reflns_limit_k_min       -31
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            12185
_diffrn_reflns_theta_full        26.05
_diffrn_reflns_theta_max         26.05
_diffrn_reflns_theta_min         1.61
_exptl_absorpt_coefficient_mu    0.080
_exptl_absorpt_correction_T_max  0.9960
_exptl_absorpt_correction_T_min  0.9912
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker AXS SADABS program'
_exptl_crystal_colour            colorles
_exptl_crystal_density_diffrn    1.194
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             552
_exptl_crystal_size_max          0.11
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.184
_refine_diff_density_min         -0.153
_refine_diff_density_rms         0.038
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.024
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     184
_refine_ls_number_reflns         2827
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.024
_refine_ls_R_factor_all          0.1137
_refine_ls_R_factor_gt           0.0648
_refine_ls_shift/su_max          0.007
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0630P)^2^+0.3734P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1364
_refine_ls_wR_factor_ref         0.1568
_reflns_number_gt                1728
_reflns_number_total             2827
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol203165x_si_001.cif
_cod_data_source_block           6
_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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P2(1)/c  '
_cod_database_code               1503560