Di-1-adamantylphosphine-containing diiron propane-1,3-dithiolate pentacarbonyl complex: Synthesis, structure, electrochemistry, and fungicidal activity

We report a novel diiron propane-1,3-dithiolate complex [Fe-2(CO)(5)PH(C10H15)(2)(mu-SCH2CH2CH2S)] containing a di-1-adamantylphosphine ligand. Trimethylamine N-oxide-induced decarbonylation of complex [Fe-2(CO)(6)(mu-SCH2CH2CH2S)] followed by reaction with di-1-adamantylphosphine yielded the target product in 86% yield. The title compound was identified by spectroscopy, elemental analysis, as well as further determined by single crystal X-ray diffraction analysis. Electrochemical properties were studied by cyclic voltammetry without or with HOAc. Interestingly, the fungicidal activity of the title compound showed moderate activity against Phytophthora infestans, Pyricularia oryae, Botrytis cinerea, and Physalospora piricola.

Automated summary

A novel diiron propane-1,3-dithiolate complex with a di-1-adamantylphosphine ligand was synthesized and characterized by various analytical techniques. The compound exhibited moderate fungicidal activity against several plant pathogens, demonstrating potential for further studies in agricultural applications.