Tristability arising from singlet-triplet and quartet spin states for dimeric Co(II)salen.
The magnetic behavior of N,N'-ethylenebis(salicylideniminato)cobalt(II) (Co(II)Salen, 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.
Department of Chemistry, 315 South 1400 East, Room 2124, University of Utah, Salt Lake City, Utah 84112-0850, USA.
Kil Sik
KS
Min
Jordan
J
Arthur
William W
WW
Shum
Muktha
M
Bharathy
Hans-Conrad
HC
zur Loye
Joel S
JS
Miller
D003035:Cobalt / Q000737:chemistry*; D019281:Dimerization; D005029:Ethylenediamines / Q000737:chemistry*; D008280:Magnetics; D008958:Models, Molecular; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*; D011789:Quantum Theory; D013696:Temperature
D005029:Ethylenediamines; D009942:Organometallic Compounds; D003035:Cobalt; C011452:disalicylaldehyde ethylenediamine