Hydrogen Bond and Other Lewis Acid–Lewis Base Interactions as Preliminary Stages of Chemical Reactions

Classification of Chemical Reactions: Stages of Expertise

In this study we explore the strategies that undergraduate and graduate chemistry students use when engaged in classification tasks involving symbolic and microscopic (particulate) representations of different chemical reactions. We were specifically interested in characterizing the basic features to which students pay attention when classifying chemical reactions at the symbolic and microscopi...

Ultrafast Soft X-ray Studies of Surface Chemical Reactions and Hydrogen Bond Dynamics in Aqueous Systems

The ultimate goal in chemistry is to understand on a fundamental level how bonds are broken and reformed during chemical reactions. In many cases we can draw simple pictures of how electrons flow with respect to electron pair redistributions or electrostatic interactions along a reaction path. For many systems bonding can often be understood in terms of molecular orbitals and reactivity in dyna...

Internal Lewis acid assisted ureas: tunable hydrogen bond donor catalysts.

The strategic incorporation of internal Lewis acids onto urea scaffolds gives rise to a family of tunable hydrogen bond donor catalysts. The nature of the Lewis acid and associated ligands affects the urea polarization, acidity, and activity in reactions of nitrocyclopropane carboxylates and nitrodiazoesters.

Chemical salt reactions as algebraic hyperstructures

A salt metathesis reaction is a chemical process involving the exchange of bonds between two reacting chemical species, which results in the creation of products with similar or identical bonding affiliations. Hyperstructure theory is studied from the theoretical point of view and for its applications. In this paper, we provide some examples of hyperstructures associated with salt m...

Internal Lewis Acid Assisted Single Hydrogen Bond Donor Catalysis