Patent ID: 8168811

Claim:
A precursor including a central metal atom M to which is coordinated at least one ligand of formula (I): wherein: R 1 , R 2 and R 3 are each independently H or ogano moieties; and G 1 is an electron donor arm substituent that increases the coordination of the ligand to the central metal atom M; wherein when G 1 is aminoalkyl, the substituents on the amino nitrogen are not alkyl, fluoroalkyl, cycloaliphatic, or aryl, and are not connected to form a ring structure containing carbon, oxygen or nitrogen atoms, and wherein the metal M is selected from the group consisting of Ta, V, Ti, Nb, Pb, Ni, W, Ca, Ba, In, Y, La, Zr, Hf, Ir, Ru, Pt, Pd, Os, Re, Cr, Mo, Ge; Al, Si, Ga, Sc, V, Cr, Fe, Sb, Bi, Mn, Co, Ni, Zn, Cd, Te, Hg, Au, Cu, Ag, Sr and Ru.