Their initial work showed that the catalyst worked as a molecule that contained a core of four
rhodium atoms in a tetrahedron, or a triangular pyramid, with each corner decorated with boron and other elements.
When a pair of chemical targets — n this case, carbon monoxide gas and chloride ions — approach,
the rhodium atoms cut their ties to nearby sulfur atoms and latch onto the targets instead.
Not exact matches
Seeking such a strategy, researchers at Northwestern University in Evanston, Illinois, created an organic ring - shaped molecule with four metal
atoms: two zincs and two
rhodiums.
But the
rhodium and other
atoms could line up in dozens of configurations in the molecule.