Synthesis and structural characterizations of organolanthanide complexes with amino-tethered guanidinate ligand (C5H5)2Ln[H2N(CH2)3NC(NHiPr) NiPr)] (Ln = Yb, Y, Er, Dy)

A novel method for construction of the amino-tethered guanidinate ligand in organolanthanide chemistry was described through addition of diamine with carbodiimide, and provides a potential strategy for assembling the amino-tethered guanidines from amines and carbodiimide.