Patent ID: 8609843

Claim:
A method of synthesizing a non-porphyrin metal nitrosyl having a formula selected from the group consisting of wherein E is N, O or S, N a is carboxamido-N; M is a group 7 or group 8 transition metal in a +2, +3 or +4 oxidation state, and is not Fe II , said method comprising: a) deprotonating a ligand in a solvent to produce a deprotonated ligand, wherein said ligand is a pentadentate or tetradentate ligand having one or more carboxamido groups; b) reacting a metal salt with said deprotonated ligand to produce a solution comprising an intermediate, wherein said metal is group 7 or group 8 transition metal in a +2, +3 or +4 oxidation state; and c) passing NO through said solution to produce said non-porphyrin metal nitrosyl.