 The activation and therefore use of H2 is important for many chemical and biological transformations.Using FLPs to liberate H2 is metal-free, this is beneficial due to the cost and limited supply of some transition metals commonly used to activate H2 (Ni, Pd, Pt).FLP systems are reactive toward substrates that can undergo heterolysis (e.g hydrogen) due to the "unquenched" reactivity of such systems.