id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
iajs-313	Saloom, Athraa M.; Fayad, Amina A .; Ali, Emad T .	Novel Schiff Bases Derived From Pyromellitic Dianhydride	2017	14	.pdf	application/pdf	4182	232	78	No. R − R υ (C=N) cm-¹ υ (C-N-C) cm¹ asym.sym. C N CC N C R R NH2N NH2N N NH2 N NH2 C O H RC O HR C O H CH O R R 1 C N CC N C R R N N N N N N N N C O H RC O H R C H O C H R R H H OH H H H H H 2 C N CC N C R R N N NN N N N N C O H RC O H R C H O C H R R H O H H H H H HHH H H C N CC N C R R N N N N N N N N C O H RC O H R C H O C H R R H O H H H H H H HHH H H 3H 4H2O C N CC N C R R N N N N N N N N C H RC H C H C H R R H H H H R Resonance C N CC N C R R N N N N N N N N C H RC H R C H C H R R H H H H 5 487 | Chemistry 2014) عام 3العدد ( 27مجلة إبن الھيثم للعلوم الصرفة و التطبيقية المجلد Ibn Al-Haitham Jour.	cache/iajs-313.pdf	txt/iajs-313.txt