title: Water-dependent reactions of diiron(II) carboxylate complexes.
abstract: Carboxylate-rich diiron(II) compounds with varying numbers of water ligands have been characterized, including the first complex with a {Fe2(mu-OH2)2(mu-O2CArTol)}3+ unit. The isolation of these complexes reveals how water can alter the structural properties of carboxylate-bridged diiron(II) core similar to those that occur in a variety of dioxygen-activating metalloenzyme cores. Mössbauer and variable temperature, variable field magnetic susceptibility experiments indicate that the compound [Fe2(mu-OH2)2(mu-O2CAr4F-Ph)(O2CAr4F-Ph)3(THF)2(OH2)] has a high-spin diiron(II) core with little significant magnetic exchange coupling.
authors.affiliation: Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
authors.forename: Sungho
authors.initials: S
authors.lastname: Yoon
authors.forename: Stephen J
authors.initials: SJ
authors.lastname: Lippard
mesh_terms: D040761:Biomimetic Materials / Q000737:chemistry; D002264:Carboxylic Acids / Q000737:chemistry*; D018360:Crystallography, X-Ray; D005296:Ferrous Compounds / Q000737:chemistry*; D015394:Molecular Structure; D015204:Spectroscopy, Mossbauer; D014867:Water / Q000737:chemistry*
chemical_list: D002264:Carboxylic Acids; D005296:Ferrous Compounds; D014867:Water