This study explores the utilization of 1,4-diisocyanobenzene as a linear bridging ligand for the assembly of organometallic CpCo or Cp*Co complexes. Overcoming solubility challenges, the synthesis of organometallic Cp* cobalt complexes incorporating bridging 1,4-diisocyanobenzene ligands was successfully achieved, while similar CpCo complexes were not attainable. The presented approach encompasses investigations into both stepwise and self-assembly synthetic pathways, leading to the construction of a rectangular tetranuclear complex [(Cp*CoI)₄(μ-1,4-CNC₆H₄NC)₄](OTf)₄ (3). Through single-crystal x-ray diffraction and spectroscopic techniques such as infrared, nuclear magnetic resonance, and electrospray ionization-mass spectrometry, the cobalt-isocyanides complexes were characterized.

中文翻译：

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二异氰化物桥联 Cp*-钴矩形的合成研究

本研究探讨了利用 1,4-二异氰基苯作为线性桥连配体来组装有机金属 CpCo 或 Cp*Co 配合物。克服溶解度挑战，成功合成了包含桥联 1,4-二异氰基苯配体的有机金属 Cp* 钴配合物，而类似的 CpCo 配合物却无法实现。所提出的方法包括对逐步和自组装合成途径的研究，从而构建了矩形四核复合物 [(Cp*CoI) ₄ (μ-1,4-CNC ₆ H ₄ NC) ₄ ](OTf) ₄（3）。通过单晶X射线衍射和红外、核磁共振、电喷雾电离质谱等光谱技术，对异氰化钴配合物进行了表征。