Paramagnetic Triple‐Decker Sandwich Complexes

Abstract

The new air-stable complexes (1), (2), and (3)—the first paramagnetic compounds of this kind—contain 31, 32, and 33 valence electrons. So far, only diamagnetic triple-decker complexes having 30 or 34 valence electrons were known. (The central ring in (1)—(3) bears one methyl and four ethyl substituents.)