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Crystals 2016, 6(9), 110;

Molecular Structure, Spectroscopic and DFT Computational Studies of Arylidene-1,3-dimethylpyrimidine-2,4,6(1H,3H,5H)-trione

Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
Department of Chemistry, Rabigh College of Science and Art, P.O. Box 344, Rabigh 21911, Saudi Arabia
Department of Chemistry, Faculty of Science, Alexandria University, P.O. Box 426, Ibrahimia, Alexandria 21321, Egypt
Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
Authors to whom correspondence should be addressed.
Academic Editor: Helmut Cölfen
Received: 4 July 2016 / Revised: 1 September 2016 / Accepted: 5 September 2016 / Published: 8 September 2016
PDF [4266 KB, uploaded 8 September 2016]


Reaction of barbituric acid derivatives and di-substituted benzaldehyde in water afforded arylidene-1,3-dimethylpyrimidine-2,4,6(1H,3H,5H)-trione derivatives (1 and 2). The one step reaction proceeded efficiently, smoothly, and in excellent yield. The arylidene compounds were characterized by spectrophotometric tools plus X-ray single crystal diffraction technique. Quantum chemical calculations were performed using the DFT/B3LYP method to optimize the structure of the two isomers (1 and 2) in the gas phase. The optimized structures were found to agree well with the experimental X-ray structure data. The highest occupied (HOMO) and lowest unoccupied (LUMO) frontier molecular orbitals analyses were performed and the atomic charges were calculated using natural populationanalysis. View Full-Text
Keywords: green chemistry; barbituric acid; Density functional theory (DFT)-computation green chemistry; barbituric acid; Density functional theory (DFT)-computation

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Barakat, A.; Soliman, S.M.; Ghabbour, H.A.; Ali, M.; Al-Majid, A.M.; Shahidul Islam, M.; Ghfar, A.A. Molecular Structure, Spectroscopic and DFT Computational Studies of Arylidene-1,3-dimethylpyrimidine-2,4,6(1H,3H,5H)-trione. Crystals 2016, 6, 110.

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