Triazole- and azo-coupled calix[4]arene as a highly sensitive chromogenic sensor for Ca2+ and Pb2+ ions
Kai-Chi Chang; In-Hao Su; Gene-Hsiang Lee; Wen-Sheng Chung; Tetrahedron Letters 48 (2007) 7274–7278; doi:10.1016/j.tetlet.2007.08.045

data_1514082
_publ_section_title
;
 Triazole- and azo-coupled calix[4]arene as a highly sensitive chromogenic
 sensor for Ca2+ and Pb2+ ions
;
_journal_issue                   41
_journal_name_full               'Tetrahedron Letters'
_journal_page_first              7274
_journal_page_last               7278
_journal_paper_doi               10.1016/j.tetlet.2007.08.045
_journal_volume                  48
_journal_year                    2007
_chemical_formula_sum            'C63 H57 Cl3 N10 O6'
_chemical_formula_weight         1156.54
_chemical_name_systematic
; 
 ? 
;
_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                 101.372(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   25.3068(11)
_cell_length_b                   10.5670(4)
_cell_length_c                   21.5706(13)
_cell_measurement_reflns_used    total
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      25.00
_cell_measurement_theta_min      1.00
_cell_volume                     5655.1(5)
_computing_cell_refinement       DENZO-SMN
_computing_data_collection       'NONIUS COLLECT'
_computing_data_reduction        DENZO-SMN
_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      150(2)
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'NONIUS KappaCCD'
_diffrn_measurement_method       '\w 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  0.0822
_diffrn_reflns_av_sigmaI/netI    0.1332
_diffrn_reflns_limit_h_max       30
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            23719
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.64
_exptl_absorpt_coefficient_mu    0.225
_exptl_absorpt_correction_T_max  0.9933
_exptl_absorpt_correction_T_min  0.9355
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            orange-yellow
_exptl_crystal_density_diffrn    1.358
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             2416
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.03
_refine_diff_density_max         1.377
_refine_diff_density_min         -1.268
_refine_diff_density_rms         0.085
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.158
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     727
_refine_ls_number_reflns         9868
_refine_ls_number_restraints     5
_refine_ls_restrained_S_all      1.164
_refine_ls_R_factor_all          0.2174
_refine_ls_R_factor_gt           0.1076
_refine_ls_shift/su_max          0.014
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+10.0223P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2617
_refine_ls_wR_factor_ref         0.3089
_reflns_number_gt                4354
_reflns_number_total             9868
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            2007-7274.cif
_cod_data_source_block           ic12517
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not_measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               1514082