Stabilization of high-valent metals by corroles: oxo[tris(pentafluorophenyl)corrolato]chromium(V)

A E Meier-Callahan; H B Gray; Z Gross

doi:10.1021/ic000180d

Stabilization of high-valent metals by corroles: oxo[tris(pentafluorophenyl)corrolato]chromium(V)

Inorg Chem. 2000;39(16):3605-7. doi: 10.1021/ic000180d.

Authors

A E Meier-Callahan¹, H B Gray, Z Gross

Affiliation

¹ Beckman Institute, California Institute of Technology, Pasadena, California 91125, USA.

PMID: 11196822
DOI: 10.1021/ic000180d

Abstract

The aerobic reaction of Cr(CO)6 with tris(pentafluorophenyl)corrole (H3(TpFPC)) in toluene gives the dark red oxochromium(V) compound (TpFPC)Cr(O), which has been characterized by X-ray crystallography, electrochemistry, and EPR spectroscopy. Short Cr-N (1.927-1.943 A) bonds as well as relatively large 14N and small 53Cr coupling constants suggest that sigma (N-->Cr) donation is responsible for the unusual stability of chromium(V) in this complex. The CrV/IV reduction potential (0.11 V vs Ag/AgCl) is 0.65 V below that of oxo(tetramesitylporphinato)chromium(V).