Tristability Arising from Singlet−Triplet and Quartet Spin States for Dimeric CoIISalen

Min, Kil Sik; Arthur, Jordan; Shum, William W.; Bharathy, Muktha; Loye, Hans-Conrad zur; Miller, Joel S.

doi:10.1021/ic900436e.s001

Tristability Arising from Singlet−Triplet and Quartet Spin States for Dimeric Co^IISalen

journal contribution

posted on 2009-06-01, 00:00 authored by Kil Sik Min, Jordan Arthur, William W. Shum, Muktha Bharathy, Hans-Conrad zur Loye, Joel S. Miller

The magnetic behavior of N,N′-ethylenebis(salicylideniminato)cobalt(II) (Co^IISalen, 1) has been reinvestigated and reveals spin-crossover behavior above 295 K. It has a singlet ground state and a triplet excited state at 30 K (21 cm⁻¹; 60 cal/mol) above the ground state, and at a higher temperature spin crossover to the quartet, a second excited state occurs.