A nickel complex incorporating an N₂O ligand with a rare η²‐N,N′‐coordination mode was isolated and characterized by X‐ray crystallography, as well as by IR and solid‐state NMR spectroscopy augmented by ¹⁵N‐labeling experiments. The isoelectronic nickel CO₂ complex reported for comparison features a very similar solid‐state structure. Computational studies revealed that η²‐N₂O binds to nickel slightly stronger than η²‐CO₂ in this case, and comparably to or slightly stronger than η²‐CO₂ to transition metals in general. Comparable transition‐state energies for the formation of isomeric η²‐N,N′‐ and η²‐N,O‐complexes, and a negligible activation barrier for the decomposition of the latter likely account for the limited stability of the N₂O complex.

中文翻译：

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镍的同构一氧化二氮和二氧化碳配合物中的侧向配位

结合有N A镍络合物₂ ö配体与一种罕见的η ² - Ñ，Ñ '-coordination模式被分离和表征通过X射线晶体学，以及用IR和固态NMR光谱法通过扩增¹⁵的N-标记实验。报告用于比较的等电子镍CO _2配合物具有非常相似的固态结构。计算研究显示，η ^2个-N ₂ ö结合到镍比η稍强² -CO ₂在这种情况下，和同等或大于η稍强² -CO ₂过渡金属。可比过渡态能量为同分异构η形成² - Ñ，Ñ ' -和η ² - Ñ，ö -complexes，并且对于后者可能帐户的用于N的有限的稳定性分解可忽略的活化屏障₂ ö复杂的。