Abstract
Treatment of [Cp*ZrCl 3] ( 1; Cp*=C 5Me 5) with KH in liquid ammonia and toluene at −78 °C resulted in the complete removal of chloride and formation of the nitrogen-containing zirconium potassium complex K[{(Cp*Zr) 3(μ 3-N)(μ 3-NH)(μ-NH 2) 3} 4(NH 2) 5(NH 3) 7] · 6C 7H 8 ( 2). X-ray structure analysis revealed this complex contains four [(Cp*Zr) 3(μ 3-N)(μ 3-NH)(μ-NH 2) 3(NH 2)(NH 3) 2] building blocks where one of the protons is replaced by an interstitial potassium cation. Each of the four building blocks contains three Zr atoms forming a perfect equilateral triangular core, which is capped inside by a nitrido (N) and outside by an imido (NH) group, and furthermore symmetrically bridged by amido (NH 2) groups.
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