Ishaq, Muhammad Waqas; Nawaz, Raziq; Jalil, Abdul; Hashmi, Muhammad Ali; Zheng, Tao; Li, Lianwei published their research in Journal of Molecular Structure in 2021. The article was titled 《Ligand Exchange Reaction in [Co4O4]-Cobalt Cubane: A Versatile Strategy Towards the Preparation of Cobalt Cubane-based Functional Small Molecules and Polymeric Materials》.SDS of cas: 2510-22-7 The article contains the following contents:
Herein, we report the mechanistic and application study of ligand exchange reaction in Co4O4-cobalt cubane, a well-known water oxidation catalyst (WOC). The ligand exchange reaction involves the instantaneous dissociation of attached pyridine ligand and replacement of target ligand in an appropriate solvent. The kinetic and thermodn. parameters were quantified for the ligand exchange reaction under mild conditions. Activation parameters revealed that the ligand exchange mechanism follows dissociative (D) or interchange-dissociative (Id) pathway in case of Co4O4, as it is evident by the high activation enthalpy (ΔH+) and the pos. activation entropy (ΔS+) values. The effects of ligand derivatization, reaction temperature and type of the solvent on the exchange kinetics and the product purity were also investigated in detail. Furthermore, our theor. studies disclosed the most probable ligand exchange pathway in case of Co4O4. Finally, this methodol. was successfully applied to the preparation of Co4O4-containning functional poly-4vinylpyridine (P4VP) and cross-linked heterogeneous polymeric catalysts. The present mechanistic study clearly demonstrates that the ligand exchange method is an efficient and versatile method for the preparation of Co4O4-based functional materials. In the experimental materials used by the author, we found 4-Ethynylpyridine(cas: 2510-22-7SDS of cas: 2510-22-7)
4-Ethynylpyridine(cas: 2510-22-7) belongs to pyridine. Pyridines are often used as catalysts or reagents; particular notice has been paid recently to how pyridine coordinates to metal centers enabling a wide range of valuable reactions. SDS of cas: 2510-22-7