A unitary fluorescence probe to sense Co2+: Validated by theoretical studies and X-ray crystallography
Yao, Guang-Xu; Zhang, Jin-Qiang; Li, Peng; Liu, Hui; Wang, Li; Sun, Yin-Xia; Dong, Wen-Kui; Inorganica Chimica Acta 529 (2022) 120642–; doi:10.1016/j.ica.2021.120642

data_1566006
_publ_section_title
;
 A unitary fluorescence probe to sense Co2+: Validated by theoretical
 studies and X-ray crystallography
;
_journal_name_full               'Inorganica Chimica Acta'
_journal_page_first              120642
_journal_paper_doi               10.1016/j.ica.2021.120642
_journal_volume                  529
_journal_year                    2022
_chemical_formula_moiety         'C21 H20 N2 O5'
_chemical_formula_sum            'C21 H20 N2 O5'
_chemical_formula_weight         380.39
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_cell_angle_alpha                90
_cell_angle_beta                 91.098(4)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   28.4132(18)
_cell_length_b                   4.9570(3)
_cell_length_c                   25.9948(12)
_cell_measurement_reflns_used    4694
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      26.81
_cell_measurement_theta_min      2.87
_cell_volume                     3660.5(4)
_computing_cell_refinement       'SAINT V8.38A (?, 2016)'
_computing_data_reduction        'SAINT V8.38A (?, 2016)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      173.0
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'Bruker D8 Venture'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0807
_diffrn_reflns_av_unetI/netI     0.0521
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.987
_diffrn_reflns_limit_h_max       35
_diffrn_reflns_limit_h_min       -36
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            21873
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.987
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.060
_diffrn_reflns_theta_min         2.868
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.100
_exptl_absorpt_correction_T_max  0.7454
_exptl_absorpt_correction_T_min  0.6044
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_density_diffrn    1.380
_exptl_crystal_description       block
_exptl_crystal_F_000             1600
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.208
_refine_diff_density_min         -0.193
_refine_diff_density_rms         0.045
_refine_ls_extinction_coef       .
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.080
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     256
_refine_ls_number_reflns         3984
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.080
_refine_ls_R_factor_all          0.0922
_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
'w=1/[\s^2^(Fo^2^)+(0.0471P)^2^+3.1937P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1183
_refine_ls_wR_factor_ref         0.1381
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_full    .
_reflns_Friedel_fraction_max     .
_reflns_number_gt                2731
_reflns_number_total             3984
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ICA-2022-529-120642.cif
_cod_data_source_block           11
_cod_database_code               1566006
_shelx_estimated_absorpt_t_max   0.991
_shelx_estimated_absorpt_t_min   0.986
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups, All O(H) groups
2.a Secondary CH2 refined with riding coordinates:
 C12(H12A,H12B), C13(H13A,H13B)
2.b Aromatic/amide H refined with riding coordinates:
 C4(H4), C5(H5), C6(H6), C7(H7), C9(H9), C10(H10), C11(H11), C14(H14),
 C17(H17), C19(H19), C20(H20)
2.c Idealised Me refined as rotating group:
 C21(H21A,H21B,H21C)
2.d Idealised tetrahedral OH refined as rotating group:
 O1(H1), O4(H4A)
;
_shelx_res_checksum              96283
_shelx_hkl_checksum              20049