Preliminary experiments in which these compounds were mixed with various silver salts resulted in the formation of insoluble suspensions that could not be recrystallized for X-ray crystallographic analysis. However, elemental analysis of the isolated suspensions confirms the presence of silver, suggesting that complexation reactions are indeed occurring. The optical properties of compounds are of primary concern in chromogenic sensing and patterning. The solution-phase UV-vis absorption spectrum was recorded at room temperature in dilute chloroform solutions of about 10 -5 M concentration. As shown in table, In the absorption spectra for all compounds shows around 192 nm band seems to be an inherent property of these compounds and is not due to impurities as was verified by thin layer chromatography and NMR spectroscopy. The absorption maximum of 5 and 10 was remarkably blue shift shows at 348 nm each. But 2,6, disubstituted derivatives 15 and 19 shows absorption maximum at 271 and 332 nm respectively, the decrease of absorption maximum to 270 in case of 15 can be explained that it contains dithialone moiety, is responsible for it. Similarly, the compound 20 with a free amine group exhibited max at 360 nm, which is close to its parents compound 5 which having two free amines. Compound 19 compared with the absorption of corresponding its isomer compound 23