Products Cited in Publications Worldwide Tailoring the redox capabilities of organic ligands for metal-ligand coordination with vanadium single-sites

Tailoring the redox capabilities of organic ligands for metal-ligand coordination with vanadium single-sites

Tobias W. Morris; David L. Wisman; Nassem U. Din; Duy Le; Talat S. Rahman; Steven L. Tait

DOI:

Abstract

The creation of single-site metal centers (SSMCs) through the formation of metal-organic coordination networks is an area of interest due to the proven ability of SSMCs to improve selectivity for heterogeneous catalysts. In order to better understand the reactivity potential for the SSMCs it is necessary to study the ligand-metal interaction in the metal-organic coordination networks. In the work reported here, we demonstrate the ability to tune the oxidation state of vanadium from II to IV through the tailoring of redox-active ligands. Using the N-heterocyclic ligands of bipyrimidine (BP), bispyrimidinyltetrazine (BMTZ), and biimidazole (BIM) complexed with metallic V, we have shown that the oxidation state of the V metal centers can be tuned to V(II) for BP, V(III) for BMTZ, and V(IV) for BIM. These redox-active ligands provide similar coordination environments when complexed into one dimensional chains but result in different oxidation states for the single-site metal center.

Keywords

Metal-organic coordination ; On-surface redox assembly ; Scanning tunneling microscopy ; Density functional calculations ; X-ray photoelectron spectroscopy ; Redox-active ligands ; Charge transfer ; Metals

Purchased from AmBeed

2,2′-Bipyrimidine

A10826134671-83-597%

2,2′-Bipyrimidine

40.0/250mg

Detail

A131787492-98-897%

1H,1'H-2,2'-Biimidazole

160.0/100g

Detail