Synthesis, spectral characterization, crystal structures of lanthanide(III) pyrrolidine dithiocarbamate complexes and their catalytic activity

A series of lanthanide(III) pyrrolidine dithiocarbamate complexes [Ln(Pyrrol-Dtc)(3)(Phen)] {Pyrrol-Dtc=pyrrolidine dithiocarbamate; Phen=1,10-phenanthroline; Ln=La(III), Ce(III), Pr(III), Nd(III), Sm(III), Gd(III), Tb(III), Dy(III), Er(III)} have been synthesized and structurally characterized. The molecular structures of [La(Pyrrol-Dtc)(3)(Phen)], [Pr(Pyrrol-Dtc)(3)(Phen)], [Sm(Pyrrol-Dtc)(3)(Phen)], and [Dy(Pyrrol-Dtc)(3)(Phen)] have been confirmed using single crystal XRD studies. The results reveal that in these complexes, the central Ln(III) ion is coordinated to three Pyrrol-Dtc and one Phen and possesses a distorted dodecahedron geometry. Catalytic activity of these complexes in trimethylsilylcyanation reaction has been studied.