Can anybody explain this difference. I synthesise some compounds similar to these but I can not explain this difference in their boiling point as well as in melting point.
sorry there was a mistake. NN-diethylaminobenzen has higher molar weight than that of NN-dimethylaminobenzene, but have lower boiling point. Why?
The difference was in the schiff bases the derivatives with NN-diethylamine have low melting point than that of NN-dimethylamine. and this difference is 30 to 40C.
Dr. Jaleel,
I have Chemdraw ultra8 version. It gives boiling points of compounds and for N,N-dimethylaminobenzene it is 421.76 K while for N,N-diethylaminobenzene the Tb is 467.52 K. I think that you might have consulted a reference which did a mistake. Both compounds have similar intermolecular forces, and the latter has a higher molar mass (by 28 which is significant in comparison).
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