Berichtigung: Spectroscopic Observation of the Triplet Diradical State of a Cyclobutadiene

In dieser Zuschrift muss in der rechten Spalte auf S. 10317 die Aussage “In one case, that of tetrakis(t-butyl)cyclobutadiene, crystallographic X-ray data measured at room temperature suggested a square geometry, and the authors argued that it has a triplet ground state.[8] zu “In one case, the possibility of a diradical reactivity was suggested, but no EPR studies supporting a triplet state were reported.[8]” berichtigt werden. Der darauf folgende Satz, “However, no spectroscopic support for this claim (e.g. EPR) was presented and the observed chemistry of this compound did not grant a conclusive evidence for the triplet state”, ist zu enfernen.