Stabilization of Long Cationic EMACs by Reduction or Loss of One Metal Ion

✍ Scribed by Rayyat H. Ismayilov; Wen-Zhen Wang; Rui-Ren Wang; Yi-Lin Huang; Chen-Yu Yeh; Gene-Hsiang Lee; Shie-Ming Peng

• Book ID: 102827703
• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 534 KB
• Volume: 2008
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/ejic.200800450

✦ Synopsis

Abstract

The new pyrimidyl‐ and naphthyridyl‐modulated pentapyridyltetramine ligand (H~3~N~9~‐2pm) and its linear nona‐ and octanickel chain complexes were successfully synthesized. The nonanickel complex Ni~9~(μ~9~‐N~9~‐2pm)~4~Cl~2~~2~ (1) contains two fully delocalized, mixed‐valence [Ni~2~(napy)~4~]^3+^ units. Magnetic measurements performed on the defective octanuclear complex Ni~8~(μ~8~‐N~9~‐2pm)~4~Cl~2~~2~ (2) demonstrate that the metal chain provides a pathway of magnetic superexchange coupling over the extended metal atom chain (EMAC). (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)