Detection by magnetic circular dichroism of a long-lived excited state of matrix-isolated palladium atoms

Abstract

Photolysis of matrix-isolated Pd atoms generates a transient species showing a very strong m.c.d. signal but no detectable absorption spectrum; the life-time of the species and the fact that it can be regenerated many times without significantly changing the absorption and m.c.d. spectra of the matrix, suggest that the transient is a long-lived excited state of Pd, rather than a photo-chemically generated aggregate of complex.