Ferrimagnetic ordering due to Fe(III) d and donor pi spins in (ethylenedithiotetrathiafulvalenoquinone-1,3-dithiolemethide)2.FeBr4

Takuya Matsumoto; Toyonari Sugimoto; Hiroko Aruga Katori; Satoru Noguchi; Takekazu Ishida

doi:10.1021/ic049851o

Ferrimagnetic ordering due to Fe(III) d and donor pi spins in (ethylenedithiotetrathiafulvalenoquinone-1,3-dithiolemethide)2.FeBr4

Inorg Chem. 2004 Jun 28;43(13):3780-2. doi: 10.1021/ic049851o.

Authors

Takuya Matsumoto¹, Toyonari Sugimoto, Hiroko Aruga Katori, Satoru Noguchi, Takekazu Ishida

Affiliation

¹ Research Institute for Advanced Science and Technology, Osaka Prefecture University, Sakai, Osaka 599-8570, Japan.

PMID: 15206852
DOI: 10.1021/ic049851o

Abstract

Magnetization and heat capacity were measured down to 0.4 K in a 2:1 charge-transfer (CT) salt of a new donor molecule, ethylenedithiotetrathiafulvalenoquinone-1,3-dithiolemethide (1) with a magnetic FeBr(4)(-) ion (1(2).FeBr(4)). The Fe(III) d spins of FeBr(4)(-) ions were subject to apparently ferromagnetic interaction with each other through the interaction with the pi spins developed by localization of the conducting pi electrons on the donor columns, eventually giving rise to ferrimagnetic ordering (FI) near 1 K, which provides the first example in a molecular pi-d system.