In this paper we report on spin-orbit coupling induced mag­ netokinetic effects on the free radical yield of triplet elec­ tron transfer reactions. From the magnetic field dependence ob­ served in a variety of mixed solvents the solvent dependent dy­ namics of short-lived triplet exciplexes is quantitatively de­ duced.

A simple and single-step synthesis of 2- and 3-acyl substituted benzothiophenes has been described via environmentally benign acylation of benzothiophene with in situ generated acyl trifluoroacetates. Both aliphatic and aromatic carboxylic acids participated in trifluoroacetic anhydride/phosphoric acid mediated C-C bond forming reactions under solvent-free conditions affording acyl benzothiophe...

The dirhodium(II) catalyst Rh2(esp)2 allows direct solvent-free allylic and benzylic oxidations by T-HYDRO with a remarkably low catalyst loading. This method is operationally simple and scalable at ambient temperature without the use of any additives. The high catalyst stability in these reactions may be attributed to a dirhodium(II,II) catalyst resting state, which is less prone to decomposit...

This paper presents a derivation of rate expressions for nonadiabatic proton-coupled electron transfer ~PCET! reactions in solution. The derivation is based on a multistate continuum theory in which the solvent is described by a dielectric continuum, the solute is represented by a multistate valence bond model, and the transferring proton~s! are treated quantum mechanically. In this formulation...

In recent years 'frustrated Lewis pairs' (FLPs) have been shown to be effective metal-free catalysts for the hydrogenation of many unsaturated substrates. Even so, limited functional-group tolerance restricts the range of solvents in which FLP-mediated reactions can be performed, with all FLP-mediated hydrogenations reported to date carried out in non-donor hydrocarbon or chlorinated solvents. ...

Unfortunately, many toxic solvents are used in chemistry laboratories and the manufacturing of materials, which poses a serious risk to process safety, natural environment, human health. In this review, different tools for solvent-free organic reactions have been surveyed as an approach green chemistry, where known upset our ecosystems so enormous research effort has exerted during last decade ...

Time-resolved X-ray solution scattering is sensitive to global molecular structure and can track the dynamics of chemical reactions. In this article, we review our recent studies on triiodide ion (I3 (-)) and molecular iodine (I2) in solution. For I3 (-), we elucidated the excitation wavelength-dependent photochemistry and the solvent-dependent ground-state structure. For I2, by combining time-...