The synthesis of Prussian blue and its ferrocyanide component in 1704 is usually cited as the beginning of the study of transition metal coordination chemistry. The FeS clusters and Fe(CN)(CO) centers in hydrogenase enzymes are believed to have been present in the earliest microorganisms which extends the history of Fe coordination chemistry by several billion years.The discovery of [Fe(CN)5(CO)]3- and [Fe(CN)4(CO)2]2- on a meteorite likely indicates a 4,8 billion year history. Our 21st century studies will be presented

DIC is 65 years old; Fe coordination chemistry maybe 4.8 billion years old

ACS Spring 2022

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.