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Die Reaktion von polymerem [CpZrCl3]n mit solvatfreiem LiPHtBu liefert in einer Redoxreaktion den dreikernigen ZrIII/ZrIV‐Komplex CpZr(μ‐PHtBu)2(μ‐PtBu)2{Zr(μ‐Cl)Cp}2 (1) in geringer Ausbeute. 31P‐NMR‐spektroskopisch kann die Bildung des Oxidationsprodukts (PHtBu)2 gezeigt werden. 1 kristallisiert tetragonal in der Raumgruppe P43212 mit a = 1130,5(5) pm und c = 3415,7(5) pm.

Synthesis and Crystal Structure of Bis(1,2‐dimetyl‐5‐nitro‐imidazole)dichlorocobalt(II) Bis(1,2‐dimethyl‐5‐nitro‐imidazol)dichlorocobalt(II) was obtained by reaction of CoCl2 · 6 H2O with 1,2‐dimethyl‐5‐nitro‐imidazole in methanol. The compound forms blue crystals which were characterized by IR and UV‐vis spectroscopy and by an X‐ray crystal structure determination. Co(C5H7N3O2)2Cl2: tetragonal, space group I42d, Z = 8, a = 1142.1(1) pm, c = 2577.3(2) pm. R = 0.036 for 670 independent reflexions. The Co atom is tetrahedrally surrounded by two chlorine and two N atoms at distances of 222.8(2) and 203.5(4) pm.