A pincer scaffold allows the isolation of a nickelacyclobutane and a detailed study of its reactivity. The cycle slowly undergoes an apparent beta-elimination reaction in non-polar solvents; exposure to additional ligands leads to selective ring cleavage along either the cyclopropanation or the olefin metathesis pathway. These results give insight into the divergent reactivity of metallacyclobutane intermediates.

中文翻译：

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可分离的环丁烷镍的发散反应性

钳形支架可以分离镍环丁烷并对其反应性进行详细研究。该循环在非极性溶剂中缓慢发生明显的β-消除反应；暴露于额外的配体导致沿环丙烷化或烯烃复分解途径的选择性环裂解。这些结果让我们深入了解金属环丁烷中间体的不同反应性。