The binuclear iridium compound doesn't work for hyperpolarization by itself, but when mixed with the active catalyst, it can help transfer polarization to pyridine molecules.

In the binuclear iridium compound, different pyridine molecules swap places at different speeds, which seems to be related to how tightly they're attached to the iridium atoms.

The iridium compound loses a pyridine molecule to form a simpler structure that helps transfer polarization during the SABRE process.

A special iridium compound can make NMR signals much stronger for certain molecules like pyridine by using hydrogen gas, making it easier to detect these molecules in scientific tests.

The binuclear iridium compound can swap hydrogen atoms in pyridine molecules at specific rates, with the ortho position exchanging fastest.