A non-classic complexation mode was discovered upon spectroscopic, thermodynamic, crystallographic and computational studies of a β-cyclodextrin/propionic acid complex. A "fully immersed" complexation phenomenon, where both the guest's hydrophobic and polar moieties are located inside the host and are stabilized by it, was found and calculated as the most favorable configuration.

Complexation thermodynamics of UO22+ and a series N,N,N’,N’-tetraalkyl diglycolamide (TRDGA) ligands having alkyl chains –CH3 to –C6H13 were investigated in an ionic liquid (IL). The complexation constant for UO22+/DGA complex increased linearly with increasing chain length DGA from tetramethyl (logβ1 = 4.52, logβ2 8.01) tetrahexyl 5.62, 10.3). There two types species recorded the calorimetric ...

Characterization of metal complexation phenomena in seawater is a formidable challenge. Adequate characterization of inorganic complexation schemes is currently limited by a paucity of well-defined hydrolysis constant data for chemical species which are important in the weakly alkaline conditions of normal seawater. Other important problems include the neglect of equilibria involving ligands an...

In the present study, an investigation on the complex formation between mono- and divalent metal ions (Na+, K+, Li+ and Mg2+) in the form of salt with different podands using various solvents has been carried out.  Isolated complexes were characterized by different spectroscopic techniques viz. IR, NMR and elemental analysis. On the basis of ...

This article focuses on the use of polyethylene glycol (PEG) as a virioplankton concentrating agent to characterize the diversity of natural communities of aquatic viruses. PEG is well known as good inductor of attractive interactions that crystallize viruses in the interpolymer spaces between PEG molecules. Added to a co-precipitant it allows an easy and rapid concentration of virioplankton. A...

The aim of the present study is to synthesize the oxovanadium complex of the V3+ ion with isatin sciff bases. Spectroscopic methods have been used to confirm these models of complexation and to understand the structures of the species formed in methanolic solution. We also have isolated a complex of Vanadium (III) with isatin schiff bases in the solid phase.