The emergence of the PCP pincer ligand as a platform to enhance or allow challenging bond activations and catalysis is an important development in coordination chemistry. Within the sub-classes of PCP pincer ligands, PC_carbeneP pincer ligands (featuring a central carbene donor) have lagged in their development, with relatively few reports of such ligands in the 20th century, despite their discovery shortly after the seminal report of the first aryl based PCP pincer ligand. However, the last 10–15 years has seen renewed activity and multiple reports concerning PC_carbeneP pincer ligands. Practical solutions to problems concerning the kinetic stability of and synthetic access to PC_carbeneP ligands has allowed these ligands to be installed on metals from group 8, 9 and 10, and most importantly, on first row transition metals iron, cobalt and nickel. Further, the expansion of examples containing the PC_carbeneP ligand has allowed discovery of the many unique facets of reactivity this ligand platform offers to metal complexes. These result in the ability of the PC_carbeneP pincer complexes to activate E–H (E = H, C, Si, B, N, O), S–S, N-O, CC, CO, CN, CS, C≡N and C≡C bonds through 1,2-addition and [2+2] addition, stabilize a number of formal metal oxidation states, partake in frustrated Lewis pair chemistry and sequester ligands to generate vacant metal coordination sites. Part of the diversity of reactivity seen in PC_carbeneP pincer complexes can be attributed to the ambiphilic nature of the carbene position, allowing electrophilic, radical and nucleophilic character. This review aims to catalogue examples of PC_carbeneP pincer complexes (specifically) and the recent developments in this field.

PCP 钳状配体作为增强或允许具有挑战性的键活化和催化的平台的出现是配位化学的重要发展。在 PCP 钳状配体的子类中，PC_卡宾P 钳状配体（具有中心卡宾供体）的发展滞后，尽管在开创性的报告之后不久就发现了这些配体，但在 20 世纪很少有关于此类配体的报道。第一个基于芳基的 PCP 钳状配体。然而，在过去的 10-15 年里，关于 PC_卡宾P 钳配体的活动重新活跃，并有多项报道。关于 PC_卡宾的动力学稳定性和合成获取问题的实用解决方案P 配体允许这些配体安装在第 8、9 和 10 族的金属上，最重要的是，安装在第一排过渡金属铁、钴和镍上。此外，包含 PC_卡宾P 配体的实例的扩展使人们能够发现该配体平台为金属配合物提供的许多独特的反应性方面。这些导致 PC_卡宾P 钳形复合物能够激活 E-H (E = H, C, Si, B, N, O), S-S, NO, C C, CO, C N, C S , C≡N 和 C≡C 键通过 1,2-加成和 [2+2] 加成，稳定了许多正式的金属氧化态，参与受挫的路易斯对化学和螯合配体以产生空的金属配位点。在 PC 中看到的反应性多样性的一部分_卡宾P 钳形配合物可归因于卡宾位置的两亲性质，允许亲电、自由基和亲核特性。本综述旨在对 PC_卡宾P 钳复合物（特别是）的示例以及该领域的最新发展进行编目。