Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 518-82-1, Name is Emodin, molecular formula is C15H10O5. In an article, author is Khatab, Tamer K.,once mentioned of 518-82-1, Computed Properties of https://www.ambeed.com/products/518-82-1.html.
(SiO2/Sm2O3) was successfully synthesized and examined using scanning electron microscopy; X-ray diffraction and Fourier transform infrared spectroscopy. Obtained data shows the formation of crystalline phase superimposed over the silicate amorphous matrix. The synthesized catalyst was used for eco-friendly synthesis of bis-indole derivatives. Two moles of indole and different aromatic aldehyde were mixed and heterocyclic aldehydes have been adopted in-expensive, recyclable, easily prepared and nontoxic catalyst (SiO2/Sm2O3) under solvent free conditions. The chemical structures of the synthesized compounds have been introduced and correlated with UV/vis. optical absorption spectra in combination with (HOMO-LUMO) through experimental spectrophotometric data in both direct-indirect transitions and that obtained based of density functional theory (DFT).
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Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles