Spin crossover by encapsulation

Kosuke Ono; Michito Yoshizawa; Munetaka Akita; Tatsuhisa Kato; Yoshihide Tsunobuchi; Shin-Ichi Ohkoshi; Makoto Fujita

doi:10.1021/ja8089894

Spin crossover by encapsulation

J Am Chem Soc. 2009 Mar 4;131(8):2782-3. doi: 10.1021/ja8089894.

Authors

Kosuke Ono¹, Michito Yoshizawa, Munetaka Akita, Tatsuhisa Kato, Yoshihide Tsunobuchi, Shin-Ichi Ohkoshi, Makoto Fujita

Affiliation

¹ Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.

PMID: 19199438
DOI: 10.1021/ja8089894

Abstract

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.