Structure and dynamic behaviour of lanthanide nitrate complexes with bis(diphenylphosphorylmethyl)mesitylene in solutions: The nature of unexpected 31P NMR spectra

The solution structure of the title complexes, [LnL(NO3)3] and [LnL2(NO3)3] (Ln = La, Ce, Nd, Er), were investigated with 31P NMR and IR spectroscopy, conductivity and sedimentation analysis. Their 31P NMR spectroscopic data are discussed.