Flash and continuous photolysis kinetic studies of the iron-iron hydrogenase model (μ-pdt)[Fe(CO)3]2 in different solvents

Inorg Chem. 2011 Dec 5;50(23):11850-2. doi: 10.1021/ic201523r. Epub 2011 Oct 28.

Abstract

Flash and continuous photolysis studies of (μ-pdt)[Fe(CO)(3)](2) under excess CO were conducted in coordinating and noncoordinating solvents. The back-reaction of CO with the photoproduct showed second-order kinetics with k(CO) values of 1.0 × 10(8), 3.4 × 10(6), 1.2 × 10(6), and 0.90 M(-1) s(-1) in hexanes, benzene, toluene, and THF, respectively. These data indicate a solvent-coordinated intermediate as one photoproduct, but other long-lived species were also apparent.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Biomimetic Materials / chemistry*
  • Coordination Complexes / chemistry*
  • Hydrogenase / chemistry*
  • Hydrogenase / metabolism*
  • Iron-Sulfur Proteins / chemistry*
  • Iron-Sulfur Proteins / metabolism*
  • Kinetics
  • Palladium / chemistry*
  • Photolysis*
  • Propane / analogs & derivatives*
  • Propane / chemistry
  • Solvents / chemistry*
  • Sulfhydryl Compounds / chemistry*

Substances

  • Coordination Complexes
  • Iron-Sulfur Proteins
  • Solvents
  • Sulfhydryl Compounds
  • propanedithiolate
  • Palladium
  • iron hydrogenase
  • Hydrogenase
  • Propane