Chemical Science and Chemistry World Article for Prof. Lee Brammer

Prof. Lee Brammer, along with other researchers here in Sheffield, and his collaborators at the universities of York and Cambridge have demonstrated solvent control of intermolecular interactions. Their article, published in Chemical Science, can be found in full here.

In addition, an article has also been published in Chemistry World, which can be read through the following link.

Graphic of solvent controlled intermolecular interactions

Their work demonstrates the competition between hydrogen bonds and halogen bonds in different solvent systems. Three aromatic systems are placed into equilibrium and self-assemble into different co-crystals depending on the solvent used. Polar solvents weaken hydrogen bonds resulting in a halogen bonded co-cyrstal, whereas non-polar solvents promote a hydrogen bonded co-crystal.