In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Photochromic organic cage-encapsulated Au nanoparticles: light-regulated cavities for catalytic reduction of 4-nitrophenol, published in 2020, which mentions a compound: 16961-25-4, Name is Hydrogen tetrachloroaurate(III) trihydrate, Molecular AuCl4H7O3, Recommanded Product: Hydrogen tetrachloroaurate(III) trihydrate.
A diarylethene-based photochromic cage (DPC) with an adjustable cavity upon irradiation with UV and visible light has been designed and synthesized. Au nanoparticles encapsulated in the organic cage with open and closed states (Au@o-DPC and Au@c-DPC) showed different catalytic activities for the reduction of 4-nitrophenol.
As far as I know, this compound(16961-25-4)Recommanded Product: Hydrogen tetrachloroaurate(III) trihydrate can be applied in many ways, which is helpful for the development of experiments. Therefore many people are doing relevant researches.
Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem