The results elemental analysis (C ¼ 72. 25 Fig. 1. The presence of FTIR peak at 1126.43 cm À1 in Fig. 1 was due to the characteristic C]S double bond peak (n C]S , 1050-1200 cm À1 ) 41 of the reagent indicating the formation of PTQA. Both FTIR spectral and elemental analysis **data** indicated the formation of the reagent PTQA. The formation of the reagent also tested by 1 HNMR spectrum is shown in Fig. 2. The steadiness of the thermogravimetric curve obtained for about 1 g of the reagent at 80-90 C indicated that the reagent did not contain any moisture.