<
b>Redox-Active Sulphur Diimide Ligand
b> Anion radicals of R−N=S=N−R have never
been isolated or structurally characterized. In their Full Paper on
page 1278 ff., N P. Gritsan, R. T. Boer&
eacute;, P. W. Roesky, A. V. Zi
barev, S. N. Konchenko et al. report the first Cp*
b>2b>Ln complexes (Ln = Sm, Eu, Y
b; R = NSiMe
b>3b>) of sulphur diimides and demonstrate
by exhaustive characterisation (X-ray diffraction, EPR, UV-Vis-NIR spectroscopy, SQUID magnetometry and rigorous a
b initio computational methods) that these powerful reducing agents transfer an electron to the coordinated thiazyl ligand. A
brand new world of redox non-innocent ligands has thus emerged on the horizon.