A novel Salen-based dual channel sensor for easy and selective nanomolar detection of l-cysteine
Mohan, Nithya; Sreejith, S. S.; Kurup, M. R. Prathapachandra; New Journal of Chemistry 48 (2024) 2584–2593; doi:10.1039/D3NJ05504C

data_7062944
_publ_section_title
;
 A novel Salen-based dual channel sensor for easy and selective nanomolar
 detection of l-cysteine
;
_journal_issue                   6
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              2584
_journal_page_last               2593
_journal_paper_doi               10.1039/D3NJ05504C
_journal_volume                  48
_journal_year                    2024
_chemical_formula_iupac          'C24 H30 N2 O4, H2 O'
_chemical_formula_moiety         'C24 H30 N2 O4, H2 O'
_chemical_formula_sum            'C24 H32 N2 O5'
_chemical_formula_weight         428.52
_chemical_name_systematic
'(+-)-<i>trans</i>-6,6'-Diethoxy-2,2'-[cyclohexane-1,2-diylbis(nitrilomethanylylidene)]diphenol monohydrate'
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_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
;
2023-09-23 deposited with the CCDC.	2024-01-03 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 111.144(8)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.8241(18)
_cell_length_b                   11.6975(19)
_cell_length_c                   21.881(4)
_cell_measurement_reflns_used    3026
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      23.505
_cell_measurement_theta_min      2.820
_cell_volume                     2345.2(7)
_computing_cell_refinement       'APEX2 and SAINT (Bruker, 2004)'
_computing_data_collection       'APEX2 (Bruker, 2004)'
_computing_data_reduction        'SAINT and XPREP (Bruker, 2004)'
_computing_molecular_graphics
'ORTEP-3 for Windows (Farrugia, 2012) and <i>DIAMOND</i> (Brandenburg, 2010)'
_computing_publication_material
'SHELXL97 (Sheldrick, 2008) and publCIF (Westrip, 2010)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 8.33
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'Bruker APEXII CCD'
_diffrn_measurement_method       '\w and \f scan'
_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  0.0480
_diffrn_reflns_av_sigmaI/netI    0.0697
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            16141
_diffrn_reflns_theta_full        28.03
_diffrn_reflns_theta_max         28.03
_diffrn_reflns_theta_min         2.39
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.085
_exptl_absorpt_correction_T_max  0.980
_exptl_absorpt_correction_T_min  0.977
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2004)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.214
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             920
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: methanol'
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.236
_refine_diff_density_min         -0.211
_refine_ls_extinction_coef       0.0022(8)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 2008)'
_refine_ls_goodness_of_fit_ref   1.012
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     299
_refine_ls_number_reflns         5586
_refine_ls_number_restraints     5
_refine_ls_restrained_S_all      1.012
_refine_ls_R_factor_all          0.1503
_refine_ls_R_factor_gt           0.0683
_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^)+(0.0561P)^2^+1.8063P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1504
_refine_ls_wR_factor_ref         0.1904
_reflns_number_gt                2701
_reflns_number_total             5586
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            d3nj05504c2.cif
_cod_data_source_block           I
_cod_depositor_comments          'Adding full bibliography for 7062944.cif.'
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7062944