id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
aijhass-74	Islamallah, Bari Muhamd 	Preparation of Series Schiff Bases and Studying of their Liquid Crystalline Behavior	2019	7	.pdf	application/pdf	1848	78	49	absorption bands at 2918 due to aliphatic CH 5. absorption bands at 2600-3198 due to OH of the carbonyl 6. absorption bands at 3032 due to aromatic CH Figure (5) infrared spectrum of the compound C7 From IR spectrum of a compound most important absorption bands represent functional groups are: 1. absorption band at 1170 due to a group -O-CH2-CH2 2. absorption band at 1630 belonged due to imine group CH = N 3. absorption band at 1735 due to the carbonyl of carboxylic group 4. absorption band at 2983 due to aliphatic CH 5. 2-A solutionofappropriate methane bromide (0.025mol) in 12.5mLdissolved in added ethanol, 3-The mixture heated by using appropriate condenserfor more then one hour(then6mL distilled water added and the product was washed recrystallizefor ethanol,melting point (129C°),	cache/aijhass-74.pdf	txt/aijhass-74.txt