Abstract
The synthesis and characterization of Schiff base 4,4 diaminodiphenyl ether-vanillin possesed of free primary amine has been done. The aims of this research were synthesis Schiff base 4,4 diaminodiphenyl ether-vanillin possesed of free primary amine from reaction between 1 mol of 4,4 diaminodiphenyl ether and 1 mol of vanillin which affected by temperature of synthesis (30-90°C) and its characterization using FTIR spectroscopy and X Ray diffraction analysis. The result showed that the functional group of all product of Schiff base 4,4 diaminodiphenyl ether-vanillin possesed of free primary amine was not affected by temperature of synthesis. The functional group of –C=N in this Schiff base compound appeared at wave number 1597 cm−1 and its consequences, the aldehyde group (C=O) was not detected at 1666 (stretching) and 632 cm−1 (bending vibration). The wave number between 3387-3441 cm−1 was stretching vibration of primary amine (N-H) and stretching vibration of –C-N from aromatic amine (NH2-aromatic) can be found at wave number between 1280-1288 cm−1. Diffractogram of 4,4 diaminodiphenyl ether, vanillin and Schiff base 4,4 diaminodiphenyl ether-vanillin were 11.91° - 50.39°, 13.13° and 39.99° and 10.13° - 50.6° respectively.
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