Volume 91 Issue 33 | p. 25 | Concentrates
Issue Date: August 19, 2013

Colorful Isomerization

An organometallic complex with three-center, two-electron bonds undergo changes crystal form, and thus color, when it changes structure
Department: Science & Technology
News Channels: Organic SCENE, Materials SCENE
Keywords: agostic, organometallic, isomer, isomerization

The appearance of two types of crystals—some red, some blue—in a reaction vessel thought to contain a single product might spell trouble; impurities, for example. But an observation of that type, made in a catalyst synthesis study at Pacific Northwest National Laboratory, has instead deepened understanding of isomerization in complexes with agostic bonds. An agostic bond is a type of bonding between a transition-metal atom (M) and a C–H unit that involves a three-center, two-electron . . .

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