Synthesis and Structural Characterisation of an N-Phosphanyl Ferrocene Carboxamide and its Ruthenium, Rhodium and Palladium Complexes
Abstract
[((Diphenylphosphanyl)amino)carbonyl]ferrocene (1) has been synthesized and coordinated to light platinum metals, ruthenium, rhodium and palladium, in diverse coordination modes. Specifically, compound1was used to prepare the following phosphane complexes, [(η(6)-mes)RuCl2(1-κP)], [(η(5)-C5Me5)RhCl2(1-κP)],trans-[PdCl2(1-κP)(2)], and [(L-NC)PdCl(1-κP)] (mes=mesitylene, L-NC=[2-(dimethylamino-κ N)methyl]phenyl-κC-1).
They were subsequently converted into cationic O,P-chelate complexes by halide abstraction with AgClO(4)and into neutral O,P-chelate complexes by deprotonation with potassiumtert-butoxide. All coordination compounds and phosphane chalcogenides1E(P-bound chalcogen atom E=O, S and Se), which were also synthesised, were structurally characterised using spectroscopic methods (IR, multinuclear NMR and ESI MS) and single-crystal X-ray diffraction analysis.
The electrochemical behaviour of the prepared compounds was studied by cyclic voltammetry, and the (L-NC)Pd-1complexes were further studied by Mossbauer spectroscopy.