21 April 1995
Vol 268, Issue 5209

About The Cover

Space-filling model of the molecular-based magnetic material Cs2MnII[VII(CN)6], which orders ferrimagnetically at 125 kelvin in an external field of 25 gauss. The atoms are described by their van der Waals radii; manganese(II) centers are pink, vanadium(II) centers are red, carbon centers are gray, and nitrogen centers are blue-green. The cesium cations, which occupy the interiors of every cube, have been omitted. See page 397. [Image: K. Llewellyn, Beckman Institute Visualization Laboratory, and M. Rosenblatt and D. White, University of Illinois at Urbana-Champaign]