Steric and electronic control of an ultrafast isomerization.

ABSTRACT: Synthetic control of the influence of steric and electronic factors on the ultrafast (picosecond) isomerization of penta-coordinate ruthenium dithietene complexes (Ru((CF₃)₂C₂S₂)(CO)(L)₂, where L = a monodentate phosphine ligand) is reported. Seven new ruthenium dithietene complexes were prepared and characterized by single crystal X-ray diffraction. The complexes are all square pyramidal and differ only in the axial vs. equatorial coordination of the carbonyl ligand. Fourier Transform Infrared (FTIR) spectroscopy was used to study the ν(CO) bandshapes of the complexes in solution, and these reveal rapid exchange between two or three isomers of each complex. Isomerization is proposed to follow a Berry psuedorotation-like

SUBMITTER: Porter TM 

PROVIDER: S-EPMC6836746 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature