Tuning the Selectivity/Specificity of Fluorescent Metal Ion Sensors Based on N2S2 Pyridine-Containing Macrocyclic Ligands by Changing the Fluorogenic Subunit: Spectrofluorimetric and Metal Ion Binding Studies
M. Carla Aragoni; Massimiliano Arca; Andrea Bencini; Alexander J. Blake; Claudia Caltagirone; Greta De Filippo; Francesco A. Devillanova; Alessandra Garau; Thomas Gelbrich; Michael B. Hursthouse; Francesco Isaia; Vito Lippolis; Marta Mameli; Palma Mariani; Barbara Valtancoli; Claire Wilson; Inorganic Chemistry 46 (2007) 4548–4559; doi:10.1021/ic070169e

data_4308165
_publ_section_title
;
Tuning the Selectivity/Specificity of Fluorescent Metal Ion Sensors Based
on N2S2 Pyridine-Containing Macrocyclic Ligands by Changing the Fluorogenic
Subunit: Spectrofluorimetric and Metal Ion Binding Studies
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              4548
_journal_page_last               4559
_journal_paper_doi               10.1021/ic070169e
_journal_volume                  46
_journal_year                    2007
_chemical_formula_sum            'C21 H23 Cl2 N3 O8 Pb S2'
_chemical_formula_weight         787.63
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 90.956(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.4031(8)
_cell_length_b                   20.719(2)
_cell_length_c                   12.8426(11)
_cell_measurement_reflns_used    6431
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.4
_cell_measurement_theta_min      2.35
_cell_volume                     2501.7(4)
_computing_cell_refinement       'Bruker SAINT version 6.36a (Bruker, 2000)'
_computing_data_collection       'Bruker SMART version 5.624 (Bruker, 2001)'
_computing_data_reduction        'Bruker SAINT; Bruker SHELXTL (Bruker, 2001)'
_computing_publication_material  'enCIFer (CCDC, 2003); PLATON (Spek, 2003)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.981
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device_type  'Bruker SMART1000 CCD area detector'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.026
_diffrn_reflns_av_sigmaI/netI    0.0311
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            14845
_diffrn_reflns_theta_full        27.46
_diffrn_reflns_theta_max         27.46
_diffrn_reflns_theta_min         1.87
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    7.178
_exptl_absorpt_correction_T_max  0.560
_exptl_absorpt_correction_T_min  0.258
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(Bruker SADABS v2.05)'
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    2.091
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1528
_exptl_crystal_size_max          0.41
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.729
_refine_diff_density_min         -0.795
_refine_diff_density_rms         0.116
_refine_ls_extinction_coef       0.00025(6)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.040
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     335
_refine_ls_number_reflns         5623
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.0320
_refine_ls_R_factor_gt           0.0231
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0258P)^2^+0.5747P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0499
_refine_ls_wR_factor_ref         0.0529
_reflns_number_gt                4761
_reflns_number_total             5623
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            ic070169e_si_4.cif
_cod_data_source_block           pbqusn
_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/n'
_cod_database_code               4308165