High Oxidation States of the Later 3d Transition Elements in Phosphorus and Arsenic Donor Ligand Complexes

Abstract

The syntheses and properties of phosphorus and arsenic donor ligand complexes containing high formal oxidation states of the later 3d elements (Fe, Co, Ni, and Cu) are reviewed. The physical and structural data upon these materials are presented, and interpreted to show that the unusually high oxidation states are genuine. The features of the ligands which are particularly effective are elucidated, and the possibilities of obtaining several presently unknown types of complex discussed.

Key Words:

• phosphine
• arsine
• iron
• cobalt
• nickel
• copper