Patent ID: 8632853

Claim:
A method for atomic layer deposition of an elemental metal film comprising contacting a surface of a substrate with a vapor phase metal coordination complex comprising a transition metal cation or boron group cation M complexed with a ligand having a formula selected from the group consisting of: a) R 1 R 2 N—(CR) x —N—(CR) y —NR 7 R 8 , wherein each R is independently hydrogen, C 1-6 alkyl, acyl, aldehyde, keto or C 2-4 alkenyl and x and y are independently 2-6; b) R 1 R 2 N—Ar 1 —NH—Ar 2 -NR 3 R 4 , wherein each R is independently hydrogen, C 1-6 alkyl, acyl, aldehyde, keto or C 2-4 alkenyl, and Ar 1 and Ar 2 are aromatic hydrocarbon moieties which may be the same or different; c) R 1 R 2 N—(CR 3 R 4 ) x —N Ar —(CR 5 R 6 ) y —NR 7 R 8 , wherein each R is independently hydrogen, C 1-6 alkyl, acyl, aldehyde, keto or C 2-4 alkenyl and N Ar is a heterocyclic aromatic moiety wherein the heteroatom is N, and; d) N Ar1 —(CR 1 R 2 ) x —NR 5 —(CR 3 R 4 ) y —N Ar2 , wherein each R is independently hydrogen, C 1-6 alkyl, acyl, aldehyde, keto or C 2-4 alkenyl, and N Ar1 and N Ar2 are heterocyclic aromatic moieties wherein the heteroatom is an anionic nitrogen; such that a layer is formed on the surface comprising the metal coordination complex bound to the surface by M; contacting the bound metal complex with a reducing gas such that an exchange reaction occurs between the bound metal coordination complex and the reducing gas, thereby dissociating the bound metal complex and producing a layer of elemental M on the surface of the substrate.