A nested spin structure and single molecule magnet behaviour in an FeDy heterometallic cyclic coordination cluster.

The 20-nuclearity compound [FeDy(tea)(teaH)(NO)]·8MeCN (where teaH = triethanolamine) was synthesised and characterised through single crystal X-ray diffraction and magnetic measurements. The shape of the magnetic hysteresis in the microSQUID measurements was rationalised using the MAGELLAN program.