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RESEARCH PRODUCT

Paramagnetic Mono- and Polyhydrides of the Transition Metals

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Publisher Summary This chapter reviews the methods used for the synthesis or generation of paramagnetic hydride complexes. It subsequently surveys the known classes of stable open-shell hydride complexes. The chapter also reveals the fundamental properties of the M–H bond in open-shell compounds and finally examines the various established decomposition modes. The classical picture of the terminal M–H bond is that where the hydrogen atom is orbital and combines with an appropriate metal-fragment hybrid orbital to generate the bonding and antibonding combinations. The chapter also elaborates the paramagnetic hydride complexes, which are thermally sensitive compounds and are unstable toward a variety of decomposition pathways; all methodologies for their preparation/generation should in principle be carried out under mild conditions. Certain products, however, have proven sufficiently stable to be isolated under normal laboratory conditions.