Organometallic Compounds with Designed Spin States

Lead Research Organisation: University of Oxford


The design of molecules that could be utilized for information processing and information storage is one of the main challenges in molecular materials science. The molecules that would be suitable for such applications must exhibit bistability, which may be defined as a property of a molecular system that allows it to exist in two different electronic states over a certain range of external perturbation. A typical example of a molecular species that exhibits such a molecular bistability are spin crossover compounds. Spin crossover compounds that will exhibit a large thermal hysteresis around room temperature need to be developed for practical applications. Although many attempts have been made to produce a suitable compound in previous studies, so far the production of spin-crossover compounds with such a wide hysteresis is still a challenging issue.


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Ashley A (2007) Permethylpentalene Chemistry in European Journal of Organic Chemistry

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Ashley AE (2007) The hexamethylpentalene dianion and other reagents for organometallic pentalene chemistry. in Chemical communications (Cambridge, England)

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Ashley A (2007) Bis(permethylpentalene)cerium--another ambiguity in lanthanide oxidation state. in Chemical communications (Cambridge, England)

Description The present invention relates to per-substituted pentalene compounds, including permethylpentalene and precursors thereof. In particular, the invention provides substituted pentalene compounds and methods of preparing substituted pentalene compounds; complexes of metals with substituted pentalene compounds and methods for their production; and the use of complexes of metals with substituted pentalene compounds in catalysis. 
IP Reference WO2008110774 
Protection Patent granted
Year Protection Granted 2008
Licensed No