Patent ID: 8809849

Claim:
A lanthanide-containing precursor having the general formula: Ln(R 1 Cp) m (R 2 —N—C(R 4 )═N—R 2 ) n , wherein: Ln=Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu; R 1 is selected from the group consisting of H and a C1-C5 alkyl chain; R 2 is selected from the group consisting of H and a C1-C5 alkyl chain; R 4 is selected from the group consisting of H and Me; n and m range from 1 to 2; and the precursor has a melting point below approximately 105° C.