Chemistry of Nitrosyliron Complexes Supported by a beta-Diketiminate Ligand

• Main Authors: Tonzetich, Zachary J. (Contributor), Heroguel, Florent (Contributor), Do, Loi Hung (Contributor), Lippard, Stephen J. (Contributor)
• Other Authors: Massachusetts Institute of Technology. Department of Chemistry (Contributor)
• Format: Article
• Language: English
• Published: American Chemical Society, 2012-02-10T15:47:17Z.
• Subjects: Article
• Online Access: Get fulltext

Several nitrosyl complexes of Fe and Co have been prepared using the sterically hindered Ar-nacnac ligand (Ar-nacnac = anion of [(2,6-diisopropylphenyl)NC(Me)]2CH). The dinitrosyliron complexes [Fe(NO)2(Ar-nacnac)] (1) and (Bu4N)[Fe(NO)2(Ar-nacnac)] (2) react with [FeIII(TPP)Cl] (TPP = tetraphenylporphine dianion) to generate [FeII(NO)(TPP)] and the corresponding mononitrosyliron complexes. The factors governing NO transfer with dinitrosyliron complexes (DNICs) 1 and 2 are evaluated, together with the chemistry of the related mononitrosyliron complex, [Fe(NO)Br(Ar-nacnac)] (4). The synthesis and properties of the related cobalt dinitrosyl [Co(NO)2(Ar-nacnac)] (3) is also discussed for comparison to DNICs 1 and 2. The solid-state structures of several of these compounds as determined by X-ray crystallography are reported.
National Science Foundation (U.S.) (grant CHE-0907905)
National Institute of General Medical Sciences (U.S.) (postdoctoral fellowship, F32 GM082031-03)