On the structure of a proposed mixed-valent analogue of the diiron subsite of [FeFe]-hydrogenase

Abstract

We show that a dinuclear assembly apparently providing the first example of a synthetic molecule exhibiting key features of the diiron subsite of [FeFe] hydrogenase, viz. CO-bridging of a coordinatively unsaturated, dithiolate-bridged mixed-valence diiron centre, is in fact a diamagnetic tetranuclear complex. © The Royal Society of Chemistry.