Cover Picture: Cross-Linked Layered Structure of Magnetically Ordered [Fe(TCNE)2]⋅z CH2Cl2 Determined by Rietveld Refinement of Synchrotron Powder Diffraction Data (Angew. Chem. Int. Ed. 9/2007)

✍ Scribed by Jae-Hyuk Her; Peter W. Stephens; Konstantin I. Pokhodnya; Michael Bonner; Joel S. Miller

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 170 KB
• Volume: 46
• Category: Article
• ISSN: 0044-8249
• DOI: 10.1002/anie.200790027

✦ Synopsis

A layered magnet is formed from the reaction (see H‐tube apparatus; bottom) of tetracyanoethylene (TCNE; left) and [Fe(CO)~5~] (right). The structural elucidation described by P. W. Stephens, J. S. Miller, and co‐workers in their Communication on page 1521 ff. reveals that magnetic layers of [TCNE]^.−^ bonded to four high‐spin Fe^II^ ions are connected by [C~4~(CN)~8~]^2−^, the diamagnetic σ dimer of [TCNE]^.−^, which explains the higher than expected magnetization for this ferrimagnet.