کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1404723 | 1501694 | 2016 | 6 صفحه PDF | دانلود رایگان |
• A new Tetrakis(M2+)Bis(M+)Pentakis(hydrogenphosphate)Tetrahydrate was synthesized.
• The title compound was characterized by SXRD,UV–vis, FTIR, NMR and TGA-DTA studies.
• It crystallizes in monoclinic crystal system and the space group is P 21.
• The protonation of triazine caused dramatic changes in the frequencies of the ring.
• The new material has more thermal stability up to 200 °c.
A new organic–inorganic salt, tetrakis (2,4,6-triamino-1,3,5-triazin-1,3-diium) bis (2,4,6-triamino-1,3,5-triazin-1-ium) pentakis (monohydrogenphosphate) tetrahydrate, 4C3H8N6+2. 2C3H7N6+. 5HPO42−. 4H2O was synthesized through the reaction of melamine and phosphoric acid in an acidic medium HCl/H2O. It was then characterized by X-ray diffraction. The title compound crystallizes in monoclinic system with non-centrosymetric space group P 21 with lattice parameters a = 11.3008 Å, b = 20.9798 Å, c = 12.2679 Å, α = 90°, β = 117.236°, γ = 90°, Z = 2 and V = 2586.10 (Å)3. The UV–vis absorption spectrum UV–vis showed that the crystal has a good optical transmittance in the entire visible region with a lower cut off wavelength of 290 nm. The vibrational frequencies of various functional groups present in the crystal were identified by FT-IR analysis. The chemical structure of the compound was also confirmed by 1H, 13C and 31P NMR spectroscopy. TGA-DTA analysis revealed that the materials have a good thermal stability without any melting.
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Journal: Journal of Molecular Structure - Volume 1123, 5 November 2016, Pages 138–143