Spin crossover by encapsulation.
Encapsulation by synthetic hosts can transform the spin states of square planar Ni(II)(acen) and Co(II)(tap) complexes. Upon encapsulation, the red Ni(II) diamagnetic state was converted into a green paramagnetic state, whereas the Co(II) low spin (S = 1/2) state was changed into a coupled (S = 1/2 and S = 3/2) state. The host cages are noninnocent and host-guest interactions within the confined cavity influence the resultant properties of the enclathrated metal complexes.
Ono
Kosuke
K
Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
Yoshizawa
Michito
M
Akita
Munetaka
M
Kato
Tatsuhisa
T
Tsunobuchi
Yoshihide
Y
Ohkoshi
Shin-Ichi
S
Fujita
Makoto
M