A Simple Quinolone Schiff-Base Containing CHEF Based Fluorescence ‘turn-on’ Chemosensor for Distinguishing Zn2+ and Hg2+ with High Sensitivity, Selectivity and Reversible
Dong, Yuwei; Fan, Ruiqing; Chen, Wei; Wang, Ping; Yang, Yulin; Dalton Trans.  (2017) –; doi:10.1039/C7DT00956A

data_7042874
_publ_section_title
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 A Simple Quinolone Schiff-Base Containing CHEF Based Fluorescence
 &#x2018;turn-on&#x2019; Chemosensor for Distinguishing Zn2+ and Hg2+ with
 High Sensitivity, Selectivity and Reversible
;
_journal_name_full               'Dalton Trans.'
_journal_paper_doi               10.1039/C7DT00956A
_journal_year                    2017
_chemical_formula_sum            'C17 H14 Cl2 N2 O Zn'
_chemical_formula_weight         398.59
_chemical_name_systematic
; 
 ? 
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_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
_audit_update_record
;
2016-03-09 deposited with the CCDC.
2017-04-10 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 112.715(11)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.4923(18)
_cell_length_b                   15.272(4)
_cell_length_c                   15.500(4)
_cell_measurement_reflns_used    8376
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      25.00
_cell_measurement_theta_min      1.95
_cell_volume                     1636.0(7)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    SHELXP-97
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device_type  'Bruker Smart APEX 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  0.1327
_diffrn_reflns_av_sigmaI/netI    0.1787
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            8376
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.95
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.832
_exptl_absorpt_correction_T_max  0.8380
_exptl_absorpt_correction_T_min  0.8101
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.618
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             808
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.523
_refine_diff_density_min         -0.670
_refine_diff_density_rms         0.128
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.844
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     208
_refine_ls_number_reflns         2829
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.844
_refine_ls_R_factor_all          0.1639
_refine_ls_R_factor_gt           0.0549
_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^)+(0.0449P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1011
_refine_ls_wR_factor_ref         0.1268
_reflns_number_gt                1380
_reflns_number_total             2829
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c7dt00956a2.cif
_cod_data_source_block           1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 
;
_cod_original_sg_symbol_H-M      'P21/c   '
_cod_database_code               7042874