A Three-Dimensional Ferrimagnet with a High Magnetic Transition Temperature (TC) of 53 K Based on a Chiral Molecule

The transparent, double bridged-(R)-spiral three-dimensional polymeric complex K0.4[Cr(CN)6][Mn(S)-pn](S)-pnH0.6 ((S)-pn=(S)-1,2-diaminopropane) has been synthesized and characterized (see X-ray structure; Cr: brown, Mn: red, C: gray, N: blue, K: green). Magnetic measurements on the complex show that the MnII and CrIII ions interact ferrimagnetically and magnetic transition occurs at 53 K (Curie temperature).