id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
iajs-304	Saued, Shaimaa A.; Tomma, Jumbad H.; Ali, Emad T.	Synthesis and Characterization of Novel 1,3-Oxazepines Derived from Diamic Acid : N,N‾-Bis-(4-methyl phenyl ) pyromellitamic Diacid	2017	12	.pdf	application/pdf	3309	212	75	FTIR spectrum showed the disappearance of absorption bands of NH2 group and other peaks characterized of cyclic anhydride of the starting materials together with the appearance of new absorption stretching bands due to O-H of carboxylic moiety in the region ( 3292-2546) cm-1, a stretching band of carboxylic acid (C=O) appeared 1701 cm-1 , a stretching band of N-H group appeared at 3257 cm-1 . While a stretching band which is appeared at 1653cm-1 could be attributed to amid group( C=O) .	cache/iajs-304.pdf	txt/iajs-304.txt