The Synthesis and Hydrogen-Storage Chemistry of Polyhydridoferrates
Abstract
The reactions to prepare the complex hydride FeH6(4-) have been surveyed and it has been determined that the high pressure sintering method is the most efficient. The complex hydride Mg2FeH6 has little tendency to release hydrogen under ordinary conditions. Electrophilic species were not successful in producing a "reversible" form of hydrogen-storage, in situ. Reactions of soluble complex species prepared by solution synthetic techniques have some fascinating properties. These species are formulated as FeH6?MgY(THF)n!4, Y = halide or alkoxide. The more important findings include: (1) The position of hydride in the spectrochemical series has been unambiguously determined for the first time; (2) The thermodynamic (i.e. equilibrium constant) and kinetic parameters for the ion pairing in these species, where X = halide, have been characterized; (3) Highly soluble species have been prepared, where Y = alkoxide, and their solvatochromism has been characterized; (4) Catalysis of hydrogen-transfer reactions in hydrocarbons has been observed in solutions of FeH6(4-).
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 1998
- Accession Number
- ADA344392
Entities
People
- Donald E. Linn
Organizations
- Purdue University