3 years ago

Cobalt Carbonyl Hydrides with 1,1′-Diphosphinylferrocene Ligands – Structural and Electrochemical Diversity

Cobalt Carbonyl Hydrides with 1,1′-Diphosphinylferrocene Ligands – Structural and Electrochemical Diversity
Falk Lissner, Jan Fiedler, Michael J. Krafft, Wolfgang Kaim
The reaction of Co(CO)4H with various 1,1′-bis(diorganophosphanyl)ferrocenes (dopf) produces structurally different heterodinuclear (Co,Fe) compounds. In contrast to the P-isopropyl and P-cyclohexyl-substituted complexes [Co(CO)2H(dopf)] described earlier, the P-phenyl-substituted analogue exhibits a structure in the crystal with the hydride in trans position to a P atom. Using the dopf precursor with bulky P-tert-butyl substituents, a heterotrinuclear species {(μ-dtbpf)[Co(CO)3H]2} is obtained, in which the ferrocene-containing ligand acts as a bridge. In addition to the comparative analysis of molecular structures the (spectro)electrochemical responses are discussed in the light of the mechanism established for the isopropyl-substituted system.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/zaac.201700312

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