To generate such "high TC" molecular magnetic systems, a suitable "solvatomagnetism" effect is generally observed where loss of the solvent molecules renders improvement in the structural ordering and in extension, the magnetic ordering of such systems. Such molecules, where removal/incorporation of specific coordinated/uncoordinated solvent molecules influences the magnetic behaviour are termed "molecular magnetic sponges" which was first used by Prof. Olivier Kahn in 1999 .