The effect of spin states of iron[II] on the XPS of its mixed complexes

Abstract

A series of mixed iron[II] phenanthroline complexes having analogous coordination spheres but containing the central iron atom in differing spin states (high-spin, 5 T 2; low-spin, 1 A 1; and spin triplet, 3 A 2) have been investigated by XPS. The data reflect the effects of the spin state of iron on the XPS pattern and on the electron binding energies. Fe[4,7-(C 2H 5OOC) 2phen] 2(NCS) 2 is the first iron[II] complex in the 3 A 2 spin state that has been studied by XPS.