Articles

Hydrogen-bonding in Nitrofurantoin polymorphs: a computationally-assisted spectroscopic study Abstract The importance of hydrogen-bond formation in the molecular packing arrangements of two anhydrous forms of nitrofurantoin is investigated, combining computational methods and spectroscopic data. The overall results indicate, as expected, that the vibrational modes related to the C=O, N- H and C-H groups are strongly affected…

A comparative analysis of phycocolloids produced by underutilized versus industrially utilized carrageenophytes (Gigartinales, Rhodophyta) Abstract Carrageenan (E-407) and semi-refined carrageenan (E-407a) are some of the main additives used by the food industry for their gelling, emulsifying, thickening, and stabilizing properties. These are natural ingredients, which have been used for decades in food applications and are…

Structural and Photoluminescence Studies of a Europium(III) Tetrakis(β-diketonate) Complex with Tetrabutylammonium, Imidazolium, Pyridinium and Silica-Supported Imidazolium Counterions Abstract Tetrakis(naphthoyltrifluoroacetonato)lanthanate(III) complexes (Ln = Eu, Gd) containing the cations tetrabutylammonium, [NBu4]+; 1-butyl-3-methylimidazolium, [C4mim]+; and 1-butyl-3-methylpyridinium, [C4mpyr]+, have been prepared and structurally characterized by single-crystal X-ray diffraction. The {EuO8} coordination sphere in [NBu4][Eu(NTA)4] is best described as a…

Spectroscopic and thermal studies on the complexation of trans-cinnamic acid and a number of its hydroxyl-derivatives with alpha, beta and gamma-cyclodextrins molecules. Abstract The inclusion compounds of α-, β- and γ-cyclodextrins (α-CD, β-CD and γ-CD) with trans-cinnamic acid (t-CIA), 3-hydroxy-trans-cinnamic acid (t-3OHCIA), 4-hydroxy-trans-cinnamic acid (t-4OHCIA) and 3,4-dihydroxy-trans-cinnamic acid (t-3,4OHCIA) were prepared and characterized, in the…

The solid-liquid phase diagrams of binary mixtures of consecutive, even saturated fatty acids: differing by four carbon atoms. Abstract The complete solid–liquid phase diagrams for four binary mixtures of saturated fatty acids are presented, for the first time, in this work. These mixtures are formed by caprylic acid (C8:0) + lauric acid (C12:0), capric acid…