Structure and magnetic ordering of a 2-D Mn(II)(TCNE)I(OH2) (TCNE = tetracyanoethylene) organic-based magnet (T(c) = 171 K)

Chem Commun (Camb). 2011 Jul 21;47(27):7602-4. doi: 10.1039/c1cc10478k. Epub 2011 Apr 20.

Abstract

Mn(II)(TCNE)I(OH(2)) was isolated from the reaction of tetracyanoethylene (TCNE) and MnI(2)(THF)(3), and has a 2-D structure possessing an unusual, asymmetric bonded μ(4)-[TCNE]˙(-). Direct antiferromagnetic coupling between the S = 5/2 Mn(II) and S = 1/2 [TCNE]˙(-) leads to magnetic ordering as a canted antiferrimagnet at a T(c) of 171 K.