A chromogenic macrocycle exhibiting cation-selective and anion-controlled color change: an approach to understanding structure-color relationships.
Lee, Soo Jin; Jung, Jong Hwa; Seo, Joobeom; Yoon, Il; Park, Ki-Min; Lindoy, Leonard F.; Lee, Shim Sung; Organic letters 8 (2006) 1641–1643; doi:10.1021/ol0602405

data_1505907
_publ_section_title
;
 A chromogenic macrocycle exhibiting cation-selective and anion-controlled
 color change: an approach to understanding structure-color relationships.
;
_journal_issue                   8
_journal_name_full               'Organic letters'
_journal_page_first              1641
_journal_page_last               1643
_journal_paper_doi               10.1021/ol0602405
_journal_volume                  8
_journal_year                    2006
_chemical_formula_sum            'C32 H32 Cl2 Hg N4 O12 S2'
_chemical_formula_weight         1000.23
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXTL
_cell_angle_alpha                90.00
_cell_angle_beta                 123.552(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   22.880(5)
_cell_length_b                   25.666(6)
_cell_length_c                   14.578(3)
_cell_measurement_reflns_used    2723
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      28.27
_cell_measurement_theta_min      2.44
_cell_volume                     7134(3)
_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  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.952
_diffrn_measured_fraction_theta_max 0.952
_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  0.1551
_diffrn_reflns_av_sigmaI/netI    0.2352
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -29
_diffrn_reflns_limit_k_max       32
_diffrn_reflns_limit_k_min       -29
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            20435
_diffrn_reflns_theta_full        27.00
_diffrn_reflns_theta_max         27.00
_diffrn_reflns_theta_min         1.33
_exptl_absorpt_coefficient_mu    4.651
_exptl_absorpt_correction_type   'Empirical SADABS'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.862
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             3952
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         1.005
_refine_diff_density_min         -2.485
_refine_diff_density_rms         0.200
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.992
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     478
_refine_ls_number_reflns         7418
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.992
_refine_ls_R_factor_all          0.2073
_refine_ls_R_factor_gt           0.0622
_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^)+(0.0772P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1254
_refine_ls_wR_factor_ref         0.1982
_reflns_number_gt                2988
_reflns_number_total             7418
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol0602405si20060127_025318.cif
_cod_data_source_block           Compound2
_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      C2/c
_cod_database_code               1505907