Spectral, structural elucidation and coordination abilities of Co(II) and Mn(II) coordination entities of 2,6,11,15-tetraoxa-9,17-diaza-1,7,10,16-(1,2)-tetrabenzenacyclooctadecaphan-8,17-diene

► Binding abilities of donor atom(s) [O, S and N (nucleophile)] forced metal ion(s) to adopt different coordination geometries. ► 1H NMR and 13C NMR spectra study evidence new azomethine (-CHN-) linkage. ► Identification of antifungal character because of inhibits enzymatic activity. ► Coordination shortens for the N(38)-Co(39) due to the presence of hydrogen in azomethine (-CHN-). ► Macrocycles used as selective host for a wide variety of guest molecules and metal ion(s).