
TY  - JOUR
A1  - Baker, AT 
A1  - Goodwin, HA 
T1  - The singlet-quintet transition in Tris[2-(pyridin-2-yl)benzothiazole]iron(II) Bis(tetraphenylborate)
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1984
VL  - 37
IS  - 6
SP  - 1157
EP  - 1162
KW  - 
UR  - https://doi.org/10.1071/CH9841157 
N2  - The tris[2-(pyridin-2-yl)benzothiazole]iron(II) ion has been isolated as the tetraphenylborate salt which is stable in the atmosphere for short periods. The deep red complex displays a temperature-dependent magnetic moment and thermochroism which are associated with a thermally induced singlet (1A1) &#8596; quintet (5T2) spin transition. An empirical treatment of the transition, which is continuous, yields &#8710;H and &#8710;S values of 22.7 kJ mol-1 and 91 JK-1 mol-1 over the range 275-364 K. Spectral data for the corresponding nickel(11) complex confirm the intermediate nature of the field strength of the benzothiazole and indicate that it is a weaker ligand than the corresponding thiazole derivative. 
ER  -

